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LM4930
www.ti.com
SNAS212C – JULY 2003 – REVISED MAY 2013
Pin Descriptions
Pin No.
Pin Name
Description
A1
MIC_P
Microphone positive differential input
A2
MIC_N
Microphone negative differential input
A3
AVDD_MIC
Analog Vdd for microphone preamp
A4
DAC_REF
D/A converter reference voltage
A5
SDA
Two-wire control interface serial data pin
A6
SCL
Two-wire control interface serial clock pin
B1
AGND_MIC
Analog ground for microphone preamp
B2
MIC_BIAS
Microphone bias supply output (2V)
B3
MIC_REF
Internal fixed-reference bypass capacitor decoupling pin
B4
ADDR
Control bus address select pin
B5
PCM_SDI
PCM serial data in
B6
PCM_CLK
PCM Serial clock pin
C1
AVDD_HP
Analog Vdd for headphone amplifier
C2
NC
No Connect
C3
BYPASS
Half-supply bypass capacitor decoupling pin
C4
PCM_SYNC
PCM Frame sync pin
C5
I2S_DATA
I2S serial data input
C6
DGND_D
Digital ground
D1
HP_L
Headphone amplifier connection (Left)
D2
HP_R
Headphone amplifier connection (Right)
D3
HPSENSE_IN
Connection for sense pin of headphone jack
D4
PCM_SDO
PCM serial data out
D5
I2S_CLK
I2S serial bit clock
D6
DVDD_D
Digital Vdd
E1
AGND_HP
Analog ground for headphone amplifier
E2
LS-
Loudspeaker amplifier BTL negative out (-)
E3
HPSENSE_OUT
Logic output pin to indicate headphone connection status. Outputs logic high when HPSENSE_IN is
high and outputs logic low when HPSENSE_IN is low. See Figure 50 for suggested application circuit
E4
IRQ
LM4930 mode status indicator pin
E5
I2S_WS
I2S word select
E6
XTAL_OUT
Negative feedback source for external crystal MCLK
F1
AGND_LS
Analog ground for loudspeaker amplifier
F2
LS+
Loudspeaker amplifier BTL positive out (+)
F3
AVDD_LS
Analog VDD for loudspeaker amplifier
F4
DGND_X
Digital ground
F5
DVDD_X
Digital VDD
F6
MCLK/XTAL_IN
12.288MHz or 24.576MHz Master Clock from crystal (via XTAL OUT) or external source
Copyright © 2003–2013, Texas Instruments Incorporated
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