bu76294guw ROHM Co. Ltd., bu76294guw Datasheet - Page 3

• Manufacturer Part Number: bu76294guw
• Description: Audio Interface + Video Driver + Pol + Rtc Lsi
• Manufacturer: ROHM Co. Ltd.

◇Block diagram
(Note)Please the capacitors for AVDD ,BIAS ,LNF ,EV3 pins close to each.
◇Pin Functional Descriptions
AVDD
AVSS
BIAS
MREG
MICIN
LNF
LINEOUT
EVROUT
SPIN
SPNEG
SPPOS
SPVDD
SPVSS
VVDD
VVSS
VIN
VOUT
UNREG
CPOUT
FBREG
EV3
BATT
XIN
XOUT
Please the capacitors of X’tal for XIN ,XOUT pins close to each.
Pin name
RTCGND
CPOUT
UNREG
IOVDD
DVDD
XOUT
VOUT
VVDD
DVSS
VVSS
Analog power supply
Analog ground
Bias
Regulator for MIC
MIC input
MIC NF input
LINE output
EVR output
SP input
SP negative output
SP positive output
SP power supply
SP ground
Video driver power supply
Video driver ground
Video driver input
Video driver output
UNREG voltage input
Step up pulse output
Step up voltage output
Regulator output
Back up power supply
Crystal oscillation input
Crystal oscillation output
TEST
BATT
XIN
VIN
EV3
CLAMP
OSC
LPF
BATT
OSC Det
function
+
-
DIV
Serial I/F
REGISTER
128Bit
RTC
DET
Figure1. Block diagram
Audio I/F
Delay
REF
RTCGND
RESETIN
UVLO
RESETOUT
ACT
PWRSW0
PWRCTRL0
PWRCTRL１
PMG_VBAT_DA
PWRSW_STATE
DVDD
IOVDD
FCLK
BCLK
DAIN
ADOUT
DVSS
SCLK
CSB
SDATA
SOUT
TEST
PWRSW1
ＭCLK
Logic
REG
REV. A
Pin name
PLL
-
Δ∑ADC 16bit
Δ∑DAC 16bit
GND for RTC
RESET voltage detective output
UVLO voltage detective input
Reset output
ACT input
Power SW0 input
Power SW1 input
Power control0 output
Power control1 output
Voltage monitor output
Power SW output
Digital power supply
Digital IO power supply
CODEC frame clock input
CODEC bit clock input
CODEC DA serial data input
CODEC DA serial data output
Master clock input
Digital GND
Serial clock input
Serial chip select input
Serial data input
Serial data output
Test terminal
ADC
DAC
-
+
Lo:100ms
-
DL
MM
LPF
DL
RWRCTL
Noise Cancel
EVR
ALC
RWRCTL
function
Mic Amp
DL
Adjust
Adjust
ONT
POR
+
-
MREG
BIAS
MICIN
MREG
AVDD
PWRCTRL0
PWRCTRL1
AVSS
BIAS
RESETOUT
PWRSW0
PWRSW1
LNF
UVLO
PMG_VBAT_DA
ACT
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