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LM4935RLEVAL Arkusz danych(PDF) 5 Page - Texas Instruments

Numer części LM4935RLEVAL
Szczegółowy opis  Audio Power Amplifier Series Audio Sub-System with Dual-Mode Stereo Headphone & Mono High Efficiency Loudspeaker Amplifiers and Multi-Purpose
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LM4935RLEVAL Arkusz danych(HTML) 5 Page - Texas Instruments

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LM4935, LM4935RLEVAL
www.ti.com
SNAS296D – OCTOBER 2005 – REVISED MARCH 2006
Table 2-1. PIN DESCRIPTIONS
Pin
Pin Name
Type
Direction
Description
A1
EP_NEG
Analog
Output
Earpiece negative output
A2
A_VDD
Supply
Input
Headphone and mixer
VDD
A3
INT_MIC_POS
Analog
Input
Internal microphone
positive input
A4
EXT_MIC
Analog
Input
External microphone input
A5
VSAR2
Analog
Input
Input to SAR channel 2
A6
VSAR1
Analog
Input
Input to SAR channel 1
A7
PLL_VSS
Supply
Input
PLL VSS
B1
A_VSS
Supply
Input
Headphone and mixer VSS
B2
EP_POS
Analog
Output
Earpiece positive output
B3
INT_MIC_NEG
Analog
Input
Internal microphone
negative input
B4
BYPASS
Analog
Inout
A_VDD/2 filter point
B5
TEST_MODE/CS
Digital
Input
If SPI_MODE = 1, then
this pin becomes CS. If
SPI_MODE = 0,
and TEST_MODE/CS = 1,
then this places the
LM4935 into test mode.
B6
PLL_FILT
Analog
Inout
Filter point for PLL VCO
input
B7
PLL_VDD
Supply
Input
PLL VDD
C1
HP_R
Analog
Output
Headphone Right Output
C2
EXT_BIAS
Analog
Output
External microphone
supply (2.0/2.5/2.8/3.3V)
C3
INT_BIAS
Analog
Output
2.0V/2.5V ultra-clean
supply for internal
microphone
C4
AUX_R
Analog
Input
Right Analog Input
C5
GPIO_2
Digital
Inout
General Purpose I/O 2
C6
SDA
Digital
Inout
Control Data, I2C_SDA or
SPI_SDI
C7
SCL
Digital
Input
Control Clock, I2C_SCL or
SPI_SCK
D1
HP_L
Analog
Output
Headphone Left Output
D2
VREF_FLT
Analog
Inout
Filter point for the
microphone power supply
D3
AUX_L
Analog
Input
Left Analog Input
D4
SPI_MODE
Digital
Input
Control mode select 1 =
SPI, 0 = I2C (or test)
D5
GPIO_1
Digital
Inout
General Purpose I/O 1
D6
BB_VDD
Supply
Input
Baseband VDD for the
digital I/Os
D7
D_VDD
Supply
Input
Digital VDD
E1
HP_VMID
Analog
Inout
Virtual Ground for
Headphones in OCL
mode, otherwise 1st
headset detection input
E2
HP_VMID_FB
Analog
Inout
VMID Feedback in OCL
mode, otherwise a 2nd
headset detection input
E3
MIC_DET
Analog
Input
Headset insertion/removal
and Microphone presence
detection input
Copyright © 2005–2006, Texas Instruments Incorporated
Device Information
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