MT7621A
Network Processor
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MT7621A
DATASHEET
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Gigabit Switch
bits)
Overview
MT7621A
Network Processor
HW storage accelerator
HW NAT
- 2Gbps wired speed
- L2 bridge
- IPv4 routing, NAT, NAPT
- IPv6 routing, DS-Lite, 6RD, 6to4
HW QoS
- 32 KB I-Cache and 32 KB D-Cache per core
- 256 KB L2 Cache (shared by Dual-Core)
- SMP capable
- Single processor operation configurable
- 5 ports with full-line rate
- 5-port 10/100/1000Mbps MDI transceivers
One RGMII/MII interface
16-bit DDR2/3 up to 256/512 Mbytes
SPI(2 chip select), NAND Flash(SLC), SDXC, eMMC(4
Applications:
Internet service router
Wireless router
Home security gateway
NAS devices
iNICs
Switch control processor
The MT7621A integrates a dual-core MIPS1004Kc (880MHz), HNAT/ HQoS/
Samba/ VPN accelerators, 5-port GbE switch, RGMII, USB3.0, USB2.0, 3xPCIe,
SD-XC. The powerful CPU with rich portfolio is suitable for 802.11ac, LTE
cat4/5, edge, hotspot, VPN, AC (Access Control). It can also connect to touch-
panel, ZigBee/Z-Wave for Internet Service Router and Home Security
Gateway.
For the next generation router, MT7621A provides several dedicated
hardware engines to accelerate the NAT, QoS, Samba and VPN traffic. These
accelerators relief the CPU for other upper layer applications.
Features
Embedded MIPS1004Kc (880 MHz, Dual-Core)
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USB3 x 1+ USB2 x 1 or USB2 x 2 (all host)
PCIe host x 3
I2C, UART Lite x 3, JTAG, MDC, MDIO, GPIO
VoIP support (I2S, PCM)
Audio interface (SPDIF-Tx, I2S, PCM)
Deliver the superb Samba performance via USB
- 16 hardware queues to guarantee the min/max
bandwidth of each flow.
- Seamlessly co-work with HW NAT engine.
- 2Gbps wired speed.
Intelligent Clock Scaling (exclusive)
DDR2/3: ODT off, Self-refresh mode
Firmware: Linux 2.6 SDK, OpenWRT
RGMII iNIC Driver: Linux 2.4/2.6
HW Crypto Engine
- Deliver 400~500 Mbps IPSec throughput
Green
2.0/USB 3.0/SD-XC
Functional Block Diagram
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Clock/Timer/Reset/PLLDRAM ControllerSPI (2) PCIeUSB 3.0 HostUART Lite (3) External Interface25/40MHz CrystalDDR2/3NAND/SDXC/eMMCFlashSPI Flash/CodecUART InterfaceUSB 3.0 Interface USB 2.0 InterfaceSATAAudio InterfaceGPIO/LEDNAND/SD-XC/eMMCI2CI2S, PCM, S/PDIFHNAT+BW CTRLCrypto11n WiFiPCIeStorage AcceleratorUSB 2.0 HostMIPS 1004KEc(880 MHz)32K I-Cache32K D-CacheMIPS 1004KEc(880 MHz)32K I-Cache32K D-CacheL2-Cache 256KBCache Coherency PortPCIeNFCSATAIII (2)11ac WiFi01234Gigabit SwitchTransformerRGMII
MT7621A
Network Processor
Table of Contents
LIST OF FIGURES ............................................................................................................................................... 5
LIST OF TABLES ................................................................................................................................................ 6
1. MAIN FEATURES .......................................................................................................................................... 7
2. PINS ............................................................................................................................................................. 9
OVERVIEW ....................................................................................................................................................... 2
FEATURES ........................................................................................................................................................ 2
FUNCTIONAL BLOCK DIAGRAM ........................................................................................................................ 2
TABLE OF CONTENTS ........................................................................................................................................ 3
1.1 SWITCH CORE .................................................................................................................................................... 7
1.1.1 Overview ................................................................................................................................................ 7
1.1.2 Features ................................................................................................................................................. 8
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3.1 ABSOLUTE MAXIMUM RATINGS .......................................................................................................................... 24
3.2 RECOMMENDED OPERATING RANGE ................................................................................................................... 24
3.3 DC CHARACTERISTICS ....................................................................................................................................... 24
3.4 THERMAL CHARACTERISTICS ............................................................................................................................... 25
3.5 CURRENT CONSUMPTION .................................................................................................................................. 25
3.6 STORAGE CONDITIONS ...................................................................................................................................... 25
3.7 EXTERNAL XTAL SPECFICATION ........................................................................................................................... 25
3.8 AC ELECTRICAL CHARACTERISTICS ....................................................................................................................... 26
3.8.1 DDR SDRAM Interface .......................................................................................................................... 26
3.8.2 RGMII Interface .................................................................................................................................... 28
3.8.3 MII Interface (25 Mhz) ......................................................................................................................... 29
3.8.4 RvMII Interface (PHY Mode MII Timing) (25 Mhz) ............................................................................... 30
3.8.5 SPI Interface ......................................................................................................................................... 31
3.8.6 I2S Interface ......................................................................................................................................... 32
3.8.7 PCM Interface ...................................................................................................................................... 33
3.8.8 I2C Interface ......................................................................................................................................... 33
3.8.9 SDIO Interface ...................................................................................................................................... 34
3.8.10 NAND Flash Interface (Samsung Compatibel Device) ........................................................................ 35
2.1 BALL MAP (TOP VIEW) ....................................................................................................................................... 9
2.2 PIN DESCRIPTIONS ........................................................................................................................................... 10
2.3 PIN SHARING SCHEMES ..................................................................................................................................... 17
2.3.1 GPIO pin share scheme ........................................................................................................................ 17
2.3.2 UART pin share scheme ....................................................................................................................... 18
2.3.3 RGMII pin share schemes ..................................................................................................................... 19
2.3.4 WDT_RST_MODE pin share scheme .................................................................................................... 19
2.3.5 PERST_N pin share scheme .................................................................................................................. 19
2.3.6 MDC/MDIO pin share scheme ............................................................................................................. 19
2.3.7 NAND/SDXC/SPI pin share scheme ...................................................................................................... 20
2.3.8 Pin share function description ............................................................................................................. 21
2.3.9 xMII PHY/MAC Pin Mapping ................................................................................................................ 22
2.4 STRAPPING OPTIONS ........................................................................................................................................ 23
3. ELECTRICAL CHARACTERISTICS ................................................................................................................... 24
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MT7621A
Network Processor
3.8.11 Power On Sequence ........................................................................................................................... 38
6. REVISION HISTORY ..................................................................................................................................... 45
5. ABBREVIATIONS ......................................................................................................................................... 42
4. PACKAGE INFORMATION ........................................................................................................................... 39
4.1 DIMENSIONS - TFBGA (11.7 MM X 13.6 MM) ..................................................................................................... 39
4.1.1 Diagram Key ........................................................................................................................................ 40
4.2 REFLOW PROFILE GUIDELINE .............................................................................................................................. 40
4.3 TOP MARKING ................................................................................................................................................ 41
4.4 ORDERING INFORMATION .................................................................................................................................. 41
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MT7621A
Network Processor
List of Figures
FIGURE 2-1 MII MII PHY ..................................................................................................................................... 22
FIGURE 2-2 RVMII MII MAC ................................................................................................................................ 22
FIGURE 2-3 RGMII RGMII PHY ............................................................................................................................. 22
FIGURE 2-4 RGMII RGMII MAC ........................................................................................................................... 22
FIGURE 3-1 DDR2 SDRAM COMMAND TIMING ............................................................................................................ 26
FIGURE 3-2 DDR2 SDRAM WRITE TIMING ................................................................................................................... 26
FIGURE 3-3 DDR2 SDRAM READ TIMING .................................................................................................................... 27
FIGURE 3-4 RGMII TIMING ........................................................................................................................................ 28
FIGURE 3-5 MII TIMING ............................................................................................................................................. 29
FIGURE 3-6 RVMII TIMING ......................................................................................................................................... 30
FIGURE 3-7 SPI TIMING ............................................................................................................................................. 31
FIGURE 3-8 I2S TIMING ............................................................................................................................................. 32
FIGURE 3-9 PCM TIMING ........................................................................................................................................... 33
FIGURE 3-10 I2C TIMING ........................................................................................................................................... 33
FIGURE 3-11 SDIO TIMING ........................................................................................................................................ 34
FIGURE 3-12 NAND FLASH COMMAND TIMING ............................................................................................................. 35
FIGURE 3-13 NAND FLASH ADDRESS LATCH TIMING ....................................................................................................... 35
FIGURE 3-14 NAND FLASH WRITE TIMING ................................................................................................................... 36
FIGURE 3-15 NAND FLASH READ TIMING ..................................................................................................................... 36
FIGURE 3-16 POWER ON SEQUENCE ............................................................................................................................ 38
FIGURE 4-1 PACKAGE DIMENSION ................................................................................................................................ 39
FIGURE 4-2 REFLOW PROFILE ....................................................................................................................................... 41
FIGURE 4-3 TOP MARKING .......................................................................................................................................... 41
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MT7621A
Network Processor
List of Tables
TABLE 1-1 MAIN FEATURES ........................................................................................................................................... 7
TABLE 2-1 BALL MAP .................................................................................................................................................. 9
TABLE 2-2 PIN DESCRIPTION ....................................................................................................................................... 10
TABLE 2-3 GPIO PIN SHARE ....................................................................................................................................... 17
TABLE 2-4 UART_1 PIN SHARE ................................................................................................................................... 18
TABLE 2-5 UART_2 PIN SHARE ................................................................................................................................... 18
TABLE 2-6 UART_3 PIN SHARE ................................................................................................................................... 18
TABLE 2-7 RGMII PIN SHARE ...................................................................................................................................... 19
TABLE 2-8 WDT_RST PIN SHARE ................................................................................................................................ 19
TABLE 2-9PERST_N PIN SHARE .................................................................................................................................. 19
TABLE 2-10 MDC/MDIO PIN SHARE ........................................................................................................................... 19
TABLE 2-11 NAND PIN SHARE .................................................................................................................................... 20
TABLE 2-12 STRAPPING .............................................................................................................................................. 23
TABLE 3-1 ABSOLUTE MAXIMUM RATINGS .................................................................................................................... 24
TABLE 3-2 RECOMMENDED OPERATING RANGE .............................................................................................................. 24
TABLE 3-3 DC CHARACTERISTICS .................................................................................................................................. 24
TABLE 3-4 THERMAL CHARACTERISTICS ......................................................................................................................... 25
TABLE 3-5 CURRENT CONSUMPTION ............................................................................................................................. 25
TABLE 3-6 EXTERNAL XTAL SPECIFICATIONS .................................................................................................................... 25
TABLE 3-7 DDR2 SDRAM INTERFACE DIAGRAM KEY ...................................................................................................... 27
TABLE 3-8 RGMII INTERFACE DIAGRAM KEY .................................................................................................................. 28
TABLE 3-9 MII INTERFACE DIAGRAM KEY ...................................................................................................................... 29
TABLE 3-10 RVMII INTERFACE DIAGRAM KEY ................................................................................................................ 30
TABLE 3-11 SPI INTERFACE DIAGRAM KEY ..................................................................................................................... 31
TABLE 3-12 I2S INTERFACE DIAGRAM KEY ..................................................................................................................... 32
TABLE 3-13 PCM INTERFACE DIAGRAM KEY .................................................................................................................. 33
TABLE 3-14 I2S INTERFACE DIAGRAM KEY ..................................................................................................................... 33
TABLE 3-15 SDIO INTERFACE DIAGRAM KEY .................................................................................................................. 34
TABLE 3-16 NAND INTERFACE DIAGRAM KEY ................................................................................................................ 36
TABLE 3-17 POWER ON SEQUENCE DIAGRAM KEY .......................................................................................................... 38
TABLE 4-1 PACKAGE DIAGRAM KEY .............................................................................................................................. 40
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MT7621A_Data_Sheet_v0.4
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DRAM Controller
Table 1-1 Main Features
1. Main Features
256KB
16-bit
Features
MT7621A
Memory
DDR2
DDR3
NAND
SPI Flash
800 Mbps (max 256 MByte)
1200 Mbps (max 512 MByte)
MT7621A
Network Processor
MIPS1004Kc (880 MHz, Durl Core)
32 KB, 32 KB
CPU
I-Cache, D-Cache
L2 Cache
HNAT/HQoS
HQoS 16 queues
HNAT 2 Gbps forwarding
(IPv4, IPv6 routing, DS-Lite, 6RD, 6to4)
The following table covers the main features offered by the MT7621A. Overall, the MT7621A supports the
requirements of an high-level AP/router, and a number of interfaces together with a large maximum RAM
capacity.
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MT7621A switch is a highly integrated Ethernet switch with high performance and non-blocking transmission.
It includes a 5-port Gigabit Ethernet MAC and a 5-port Gigabit Ethernet PHY for Dumb and Smart Switch
applications. MT7621A enables an advanced power-saving feature to meet the market requirement. It
complies with IEEE803.3az for Energy Efficient Ethernet and cable-length/link-down power saving mode.
MediaTek's industry-leading techniques provide customers with the most cost-competitive and lowest power
consumption Ethernet product in the industry.
SD
eMMC
PCIe
USB
Ethernet
I2S
PCM
I2C
SPDIF-Tx
UART Lite
JTAG
Package
Small page 512-Byte (max 512 Mbit)
Large page 2k-Byte (max 8 Gbit)
SD-XC class 10 (max 128 GByte)
4-bit eMMC (max 8 GByte)
3B addr mode (max 128 Mbit)
4B addr mode (max 512 Mbit)
USB3 x 1+ USB2 x 1 or USB2 x 2
1.1 Switch core
1.1.1 Overview
5-port GSW + RGMII(1)
3
1
1
1
1
3
1
TFBGA 11.7 mm x 13.6 mm
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Supports RSTP and MSTP
Supports 802.1X
Supports 4K VLAN entries
Supports 64 sets of ACL rules
Supports double tagging VLAN
Supports hardware port isolation
Supports 8 priority queues per port
Supports ingress and egress rate control
Supports Max-Min bandwidth scheduler
Supports SVL and IVL with 8 filtering database
Programmable aging timer for MAC address table
Supports SP, WFQ, and SP+WFQ latency scheduler
Supports VLAN ID tag and un-tag options for each port
Supports IPv4 and IPv6 multicast frames hardware forwarding
Supports programmable 1518/1536/1552 and 9K Jumbo frame length
MT7621A
Network Processor
1.1.2 Features
5-port 10/100/1000Mbps MDI transceivers
Accessible MAC address table with 2048 entries and auto aging and learning capabilities
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10Base-T, 10Base-Te, 100Base-TX, and 1000Base-T compliant Transceivers
Supports Broadcast/Multicast/Unknown frames storm suppression
Supports IEEE 802.3az Energy Efficient Ethernet
Compliant with IEEE 802.3 Auto-Negotiation
Supports 40 MIB counters per port
Supports short-cable power saving
Supports Loop detection indicator
Supports 3 LEDs per GEPHY port
Integrated MDI resistors
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