Sony CDX-GT828U Service Manual page 36
Fm/mw/lw compact disc player
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Also See for CDX-GT828U:
- Operating instructions manual (140 pages) ,
- Installation/connections (2 pages)
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CDX-GT828U/GT870US/GT878US
KEY BOARD IC901 M30876FJBA04GP (FL DRIVER, LED CONTROL, FLASH MEMORY CONTROL)
Pin No.
Pin Name
1
SYS_CE
2
NC
3
FL_DATA3
4
NC
5
FL_CLK_IN
6
BYTE
7
CNVSS
8, 9
NC
10
RESET
11
XOUT
12
VSS
13
XIN
14
VCC1
15
NMI
16 to 18
NC
19
GCP_TA4_IN
20, 21
NC
22
BK_TA3_OUT
23
NC
24
LAT_TA2_OUT
25
LAUNG
26
BLINK
27
NC
28
GCP_TA0_OUT
29
SYS_SO
30
SYS_SI
31
SYS_CLK
32
NC
33
FL_DATA1
34
NC
35
FL_CLK
36
NC
37
RDY
38
ALE
39
HOLD
40
HLAD
41
BCLK
42
RD
43
WRH/BHE
44
WRL/WR
45
CS3
46
CS2
47
CE
48
A19
49
A18
50
A17
51
A16
52
A15
53
A14
54
A13
55
A12
56
A11
57
A10
36
I/O
I
Main chip enable signal input
O
Not used. (Open)
O
FL serial data signal output 3
O
Not used. (Open)
I
FL serial clock signal input
I
Connect to VSS. (Fixed at L)
I
Flash writer signal input (L: normally operation, H: writer mode)
O
Not used. (Open)
I
Reset signal input
O
Main-clock signal output (6.75 MHz)
―
Ground
I
Main-clock signal input (6.75 MHz)
―
Power supply pin (+3.3 V)
I
Nonmaskable interruption signal input (Fixed at H)
O
Not used. (Open)
I
FL GCP signal input
O
Not used. (Open)
O
FL BK signal output
O
Not used. (Open)
O
FL latch signal output
Foreign language font display mode with/without setting signal input (L: without foreign
I
language font display mode (CDX-GT828U/GT870US), H: with foreign language font display
mode (CDX-GT878US))
O
Blink control signal output
O
Not used. (Open)
O
FL GCP signal output
O
Serial data signal output
I
Serial data signal input
I
Serial clock signal input
O
Not used. (Open)
O
FL serial data signal output 1
O
Not used. (Open)
I
FL serial clock signal input
O
Not used. (Open)
I
External data bus (RDY) signal input (Fixed at H) (CDX-GT878US only)
O
Not used. (Open)
I
External data bus (HOLD) signal input (L: CDX-GT828U/GT870US, H: CDX-GT878US)
O
Not used. (Open)
O
Not used. (Open)
O
External data bus (RD) signal output (CDX-GT878US only)
O
Not used. (Open)
I
External data bus (WRL/WR) signal input (L: CDX-GT828U/GT870US, H: CDX-GT878US)
O
Not used. (Open)
O
Not used. (Open)
O
External data bus (CE) signal output (CDX-GT878US only)
I/O
External data bus (A19) signal input/output (CDX-GT878US only)
I/O
External data bus (A18) signal input/output (CDX-GT878US only)
I/O
External data bus (A17) signal input/output (CDX-GT878US only)
I/O
External data bus (A16) signal input/output (CDX-GT878US only)
I/O
External data bus (A15) signal input/output (CDX-GT878US only)
I/O
External data bus (A14) signal input/output (CDX-GT878US only)
I/O
External data bus (A13) signal input/output (CDX-GT878US only)
I/O
External data bus (A12) signal input/output (CDX-GT878US only)
I/O
External data bus (A11) signal input/output (CDX-GT878US only)
I/O
External data bus (A10) signal input/output (CDX-GT878US only)
Description
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