BCM8705
®
SERIAL 10-GBE/FIBRE CHANNEL TRANSCEIVER WITH WIS LAYER AND
XAUI™ INTERFACE
F E A T U R E S
S U M M A R Y O F B E N E F I T S
• Fully integrated CMU, CDR, SerDes, limiting amplifier,
EyeOpener®, and 4-lane XAUI™ interface
PMD interface supported serial rates: 9.953/10.3125/
10.5188-Gbps
Receive equalization on XAUI and 10G serial interfaces
Transmit pre-emphasis and amplitude control on XAUI interface
10G PMD interface phase and decision threshold adjust
WIS layer for EOS/WAN applications
SONET performance monitoring
Supports Broadcom’s StrataXGS® Ethernet switches service
aware flow control (SAFC) protocol
Meets and exceeds industry standard
IEEE 802.3™ae serial Ethernet transceiver (LAN/WAN PHY),
MDIO Clause 45 management interface with extended indirect
address register access
10-Gigabit Fibre Channel draft, rev 3.0
Support for XFP/XFI interfaces
Support for XENPAK/X2 3.0 and XPAK MSA optical module
standards
Additional features
Jumbo packets support in WAN mode
I2C master to control XFP module from device
Reference clock output for XFP module reference clock
Staged power-up mode to minimize in-rush current
Loopback modes supporting IEEE standards modes
Built-in self-test (BIST) and PRBS generator/checker
Pin-compatible with the BCM8704
Low power: LAN mode 900 mW, WAN mode 1.0W to 1.1W
Available in 13-mm x 13-mm and 17-mm x 17-mm plastic BGA
(Pb-free version also available)
Best performance for LAN (10-GbE) and WAN (OC-192
SONET) application
Universal design for 10-GbE, SONET, and 10 GFC for
XENPAK/X2 module
Compliant to XENPAK/X2 3.0 and XPAK MSA optical
module standards
Integrated and compact design allows for high-density line
card applications
Upgrade path for existing Broadcom LAN PHY transceivers
Build-in features reduce external components
Clean-up PLL
2.5V voltage regulator output
In-rush current limits
A P P L I C A T I O N S
XENPAK, X2, XPAK modules
Interface to XFP modules
LAN/MAN/WAN switch/routers
Hubs and repeaters
Network interface cards (NICs)
BCM8705 Block Diagram
XAUI
BCM8705
Media
Access
Controller
Interface
RS
S
X
G
X
MAC
Management
Interface
9.953/10.3125/10.5188
Gbps
S
X
G
X
A
M
P
/
S
C
P
I
S
W
MDC MDIO
OTX
ORX
Optical
PMD
EEPROM
O V E R V I E W
System/MAC Interface
Line/Fiber-Optic Module Interface
Differential CML
AC-coupled
internally biased
differential CML
AC-coupled
internally biased
differential LVPECL
AC-coupled
internally biased
differential CML
Differential CML
PDIP/N
10G Serial
Inputs
PCOP/N
PDOP/N
10G Serial
Outputs
PMD Analog
VCPCDR
VCNCDR
CDR Loop
Filter
CMOS
XAUI
PMD
CMOS
OPTXENB0/1
OPTXRST0/1
OPRXLOS
OPBIASFLT
OPTMPFLT
OPPWFLT
OPTXFLT
OPRXFLT
OPOUTLVL
OPINLVL
Optics
Control
and
Status
CMOS
XAUI
outputs
XAUI
inputs
External VCXO
Control
and
Status
2-Wire
interface
JTAG
X[A:D]OP/N
X[A:D]IP/N
PPDOUT
XPDOUT
PEXTCLKP/N
XEXTCLKP/N
PVCOXP/N
SYSRSTB
RSTB
MDC
MDIO
PRTAD[4:0]
PLOSB/A1
PCDRLK
PCMULK
REFCLKOUT
2WENB
CONFIG[1:0]
LASI
TXONOFF
SDA
SCL
TRSTB
JTCK
TMS
TDI
TDO
BCM8705 Fully Integrated Interface
The BCM8705 Ethernet/Fibre Channel/SONET LAN/WAN PHY is a
fully integrated serialization/deserialization (9.953/10.3125/
10.5188-Gbps) interface device performing the extension functions for a
10-gigabit serial Ethernet reconciliation sublayer (RS) interface. The
XGXS, PCS, and PMA functions include 8B/10B coding, 64B/66B
coding, SerDes, WIS, clock multiplication unit (CMU), and clock and
data recovery (CDR).
For WAN applications, a WIS-compliant framer with flexible clocking
modes allows transmission of Ethernet traffic over a WAN network.
On-chip clock synthesis is performed by the high-frequency low-jitter
phase-locked loops for the PMD and XAUI output retimers. Individual
PMD and XAUI clock recovery is performed on the device by
synchronizing directly to their respective incoming data streams. Elastic
buffers are provided to allow the XAUI and PMD interfaces to operate
in asynchronous configuration. Only an external 155.52/156.25/
159.38-MHz oscillator is required for the reference clock input.
The BCM8705 is available in a 13-mm × 13-mm, 256-pin FBGA with a
0.8-mm ball pitch and also in a 17-mm x 17-mm, 256-pin 1-mm ball
pitch RoHS-compliant package.
Broadcom®, the pulse logo, Connecting everything®, the Connecting everything logo, EyeOpener®,
and StrataXGS® are among the trademarks of Broadcom Corporation and/or its affiliates in the United
States, certain other countries and/or the EU. Any other trademarks or trade names mentioned are the
property of their respective owners.
®
BROADCOM CORPORATION
16215 Alton Parkway, P.O. Box 57013
Irvine, California 92619-7013
© 2006 by BROADCOM CORPORATION. All rights reserved.
8705-PB02-R
04/17/06
Phone: 949-450-8700
Fax: 949-450-8710
E-mail: info@broadcom.com
Web: www.broadcom.com