ICD-BP150, ICD-BP350 - Sony Audio Service Manual (repair manual). Page 21

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21
ICD-BP150/BP350
3-15. IC Pin Function Description
• IC712 MB90523APFF-G-127-BND (SYSTEM CONTROL) (MAIN BOARD)
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17 to 32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59 to 62
63
64 to 72
73
74
75 to 81
82 to 85
I/O
O
O
O
O
I
O
O
O
O
O
O
O
I
O
O
O
I
O
O
O
O
I
I
I
I
I
I
I
O
O
O
I
O
O
O
O
I
O
Description
Real time clock chip enable signal output
Beep signal output
Flash memory read enable signal output
Flash memory write enable signal output
Flash memory R/B signal input
DSP power output
ADA codec system clock output
Power terminal
DSP system clock output
Zephyr reset signal output
DSP I/F ackowledge signal output
DSP I/F enable signal output
DSP I/F command/data output
DSP I/F serial data input
DSP I/F serial data output
DSP I/F serial clock output
LCD segment signal output
Ground terminal
C (connected to power terminal)
Zephyr/RTC I/F serial data input
Zephyr/RTC I/F serial data output
Zephyr/RTC I/F serial clock output
Digital power terminal
Digital ground terminal
Zephyr I/F acknowledge signal output
Serial-to-parallel converter IC I/F chip enable signal output
Analog power terminal
A/D reference voltage H (connected to VCC)
A/D reference voltage L (connected to ground terminal)
Analog ground terminal
Battery level detection A/D input
KEY A/D input 0
KEY A/D input 1
Speed SW A/D input 0
VOR SW input (LOW : VOR SW ON)
Headphones jack ON/OFF input
Flash memory selection A/D input
KEY pull-up signal output
Power terminal
Flash memory address latch enable signal output (AND : OE)
Flash memory command enable signal output (AND : CDE)
VOR signal input
DSP reset signal output
LCD common signal output
Ground terminal
LCD segment signal output
Sub clock oscillator terminal (not used)
Sub clock oscillator input terminal (32.768kHz)
LCD segment signal output
LCD drive reference voltage terminal
Pin Name
RTC CE
BEEP
XFLMRE
XFLMWE
FLMRB
DSPPWR
ADASYSCK
VCC
DSPSYSCK
XZRST
DSPACK
XDIFEN
DCOMDT
SIN1
SOT1
SCK1
SEG00-15
VSS
C
SIN2
SOT2
SCK2
DVCC
DVSS
ZIFACK
SIPCS
AVCC
AVRH
AVRL
AVSS
BATT
KEYIN0
KEYIN1
SPEED
XVORSW
HPJACK
FLMSEL
KEYPUP
VCC
FLMALE
FLMCLE
XVORIN
XDSPRST
COM0-3
VSS
SEG16-24
SUBXTAL
SUBCLK
SEG25-31
V0-3
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