1V5 1V5 TP10 1V9 1V9 TP11 1V5 1V9 VBAT VBAT 1V5 2.402-2.480GHz ANT1 R6 0R RES0402 1V5 L2 15nH 2 0 4 0 L C12 15P 2 0 4 0 P A C U2 UNB 8 D N G DC NC D N G 7 1 2 3 Balance Filter C1 223 2 0 4 0 P A C R1 2R2 2 0 4 0 S E R C2 15P 2 0 4 0 P A C C5 104 2 0 4 0 P A C R2 2R2 2 0 4 0 S E R C4 473 2 0 4 0 P A C 8 4 3 4 0 2 0 1 O I D U A _ D D V ] 1 [ D A P _ D D V ] 0 [ D A P _ D D V L _ E L B A N E G E R V C3 225 2 1 A N A _ D D V 6 9 O I D A R _ D D V O L _ D D V 3 0 6 0 P A C 0 3 E R O C _ D D V 6 5 4 BAL GND BAL 7 8 RF_P RF_N C6 225 1 1 L _ N I G E R 2 0 4 0 P A C 1 3 H _ T U O G E R V U1 BC6140 K O O H _ R W P TP17 K O O H _ R W P 2 3 3 3 4 3 H _ N I G E R V E S N E S _ P M S H _ L B A N E G E R V QFN Low-Cost Mono DSP Headset Solution CSR Company 1V9 R11 2.2K C13 104 RES0603 R12 2.2K RES0603 R13 2.2K RES0603 CAP0603 U3 8 7 6 5 VCC WP SCL SDA 1 2 3 4 A0 A1 A2 GND 32K Standard 2Wire Bus Interface Serial EEPROM 5 0 8 0 L 475 C7 L1 22uH C8 5 0 8 0 P A C 103 2 0 4 0 P A C C9 106 5 0 8 0 P A C + V - V L C S A D S P W E T U M WP SCL SDA 5 3 X L 6 3 7 3 4 2 3 2 2 2 1 2 6 4 5 4 4 4 7 2 P _ T A B G H C _ D D V ] 0 [ O I P ] 1 [ O I P ] 2 [ O I P ] 3 [ O I P ] 6 [ O I P ] 7 [ O I P ] 8 [ O I P ] 1 1 [ O I P SPI_CLK SPI_MISO SPI_MOSI SPI_CS# 39 41 38 40 TP2 TP3 TP4 TP5 CLK MISO M0SI CS# SPI_DEBUG_EN UART_TX UART_RX 42 19 TP6 TP7 18 TP8 DEBUG TX RX TEST_EN 25 TP9 EN RST# 26 RESET AIO[0] AIO[1] 17 16 RESET 1V9 R3 10K 3 0 6 0 S E R S A I B _ C I M 7 4 N I _ L A T X 3 1 2.7V_ON T U O _ L A T X 4 1 VBAT 1V9 1V9 1V9 S S V 9 4 P _ R K P S N _ R K P S P _ C I M N _ C I M 4 3 1 2 F E R _ U A 5 F E R _ O L 5 1 ] 0 [ D E L 9 2 ] 1 [ D E L 8 2 R7 10K R8 10K R9 10K R10 10K 3 0 6 0 S E R 3 0 6 0 S E R SW1 3 0 6 0 S E R 3 0 6 0 S E R SW2 SW3 SW4 P _ K P S N _ K P S P _ C I M N _ C I M C10 473 2 0 4 0 P A C C11 223 2 0 4 0 P A C K RED D1 DIO0603 A RED K D2 A BLUE DIO0603 Y1 26M MUTE V- V+ PWR_HOOK R4 470R 3 0 6 0 S E R R5 470R 3 0 6 0 S E R VBAT VBAT 2 1 2 0 4 0 P A C P 8 6 . 8 2 C 4 3 9 2 C 2 0 4 0 P A C P 8 1 Company: Title: Drawn: Checked By: File NO.: SIZE: REV Date: 

USB1 8 9 10 11 D N G NC NC D N G 1 2 3 4 5 D N G VCC DN DP NC GND D N G 7 6 CHG TP13 USB IN C14 106 3 0 6 0 P A C 5 0 8 0 P A C C27 1uF R15 2K 3 0 6 0 S E R U4 VCC PROG 4 5 4.2V Charge IC VBAT CHRG 3 1 D N G 2 TP14 4.2V OUT VBAT RES0603 R16 47K RED BAT1 + - C15 104 3 0 6 0 P A C 2.7V_ON 47K R19 RES0603 SPK_ON MIC_BIAS VBAT VCC L3 R10 L0603 C16 1O4 36K R17 MIC_BIAS C21 104 3 0 6 0 P A C U5 1 B A1 C2 C1 IN+ D D V SHOUTDOWN IN- D N G 2 A 2 B D D V P OUT- OUT+ D N G A3 C3 3 B 2010 Power Up R10 L4 R10 L5 L0603 L0603 SPK1 + - Speaker RES0603 SPK_ON 36K R18 RES0603 C17 104 CAP0603 SHOTDOWN TP15 C18 106 3 0 6 0 P A C 3 0 6 0 P A C C19 104 SPK_P SPK_N 2.7V_ON L6 R10 3 0 6 0 L TP16 MIC_BIAS R21 1K RES0603 N _ C I M P _ C I M C25 473 3 0 6 0 P A C C26 473 3 0 6 0 P A C 2.2K R20 RES0603 R10 L7 L0603 C22 225 3 0 6 0 P A C C23 225 3 0 6 0 P A C C24 15P 3 0 6 0 P A C MIC1 + - 0R R14 RES0603