Sony STR-KM22 - Page 51

STR-KM22/KM55/KM77
51
IC2119 TC74VHC393FT (ELK) (MAIN BOARD (5/9))
IC2700 BU94502AMUV (MAIN BOARD (9/9)) (EXCEPT SAF. AR)
IC2702 TPS2553DBVR (MAIN BOARD (9/9)) (EXCEPT SAF. AR)
14 13 12 11 10 9 8
1 2 3 4 5 6 7
QA QB QC QD
A
CLEAR
VCC
QA QB QC QD
A
CLEAR
GND
1
DVSSIO
2
RESETX
3
TMODE
4
KEY_COL1/IRPTO
5
KEY_COL2/SEARCH
6
KEY_COL3/MCHNG
7
KEY_ROW1/BUSY
8
KEY_ROW2/SCL
9
KEY_ROW3/SDA
10
DVDD_M
30
AMUTE
29
DVDDIO
28
LED_REPEAT/MCLK
27
LED_PUSB/DATA
26
LED_PSD/BCK
25
LED_PLAY/LRCK/SPDIF
24
LED_ERROR/CLK24MI
23
REXTI
22
USBDP
21
USBDM
11
AVSSC
12
AVDDC
13
SEL_SLAVE
14
SEL_COD/TEST3
15
TEST2
16
XOUT_PLL
17
XIN_PLL
18
TEST1
19
DVDDIO
20
DVSSIO
40
DAVSS
39
RDACO
38
VCDACO
37
LDACO
36
DAVDD
35
SD_CON
34
SD_DO
33
SD_CLK
32
SD_DI
31
SD_CS
Audio
DAC
SD Card
Controller
FAT
File system
System
Controller
LDO
PLL
(Oscillator)
Sound
Effecter
MP3/WMA
/AAC
Decoder
USB
Controller
LED Driver
GND
2
EN
3
IN
1
4FAULT
5 ILLM
6OUT
CHARGE
PUMP
UNDERVOLTAGE
LOCKOUT
THERMAL
SENSE
CURRENT
LIMIT
4-ms
DEGLITCH
8-ms
DEGLITCH
CURRENT
SENSE
DRIVER
+
–
REVERSE VOLTAGE
COMPARATOR