Read Sharp LC-20B2E (serv.man2) Service Manual online
23
LC-13B2H/M
LC-15B2H/M
LC-20B2H/M
LC-15B2H/M
LC-20B2H/M
75
MPRCS
G/A read enable
76
MPRDA
G/A data input
77
MPCS
G/A chip select
78
MPDA
G/A data out
79
MPCLK
G/A clock
80
DDCRESET
Digital decoder reset
81
KEY4
Key input 4
82
KEY5
Key input 5
83
PASTBY
PA standby output terminal
84
SAW SW
For tuner switching (H used)
85
MODE1
For tuner switching (H used)
86
MODE2
For tuner switching (H used)
87
SSYSTEM
For S system switching detection
88
SSW
S terminal connection input - “L” for terminal connection
89
AFT
AFT voltage input
90
AGC
AGC voltage input
91
KEY1
Key input 1
92
KEY2
Key input 2
93
KEY3
Key input 3
94
POWIN
DC/DC start detection
95
VSYNC
OSD vertical synchronization signal
96
AVSS
Analog power supply input (GND)
97
HSYNC
OSD horizontal synchronization signal
98
YVSETB
For closed caption
99
AVCC
OSD power supply input
100
CVIN
Closed caption signal input
4-18. Description of multistandard sound processor IC (IC3304) RH-IX3371CEZZQ terminals
No.
Terminal name
Description
1
NC
Not connected
2
I
2
C_CL
I
2
C clock
3
I
2
C_DA
I
2
C data
4
I
2
S_CL
I
2
S clock
5
I
2
S_WS
I
2
S word strobe
6
I
2
S_DA_OUT
I
2
S data output
7
I
2
S_DA_IN1
I
2
S data inout
8
ADR_DA
ADR data output
9
ADR_WS
ADR word strobe
10
ADR_CL
ADR clock
11
DVSUP
Digital power supply 5V
12
DVSUP
Digital power supply 5V
13
DVSUP
Digital power supply 5V
14
DVSS
Digital ground
15
DVSS
Digital ground
16
DVSS
Digital ground
17
I
2
S_DA_IN2
I
2
S2-data input
18
NC
Not connected
19
NC
Not connected
20
NC
Not connected
21
RESETQ
Power-on-reset
22
NC
Not connected
23
NC
Not connected
24
DACA_R
Headphone out, right
25
DACA_L
Headphone out, left
26
VREF2
Reference ground2
27
DACM_R
Loudspeaker out, right
28
DACM_L
Loudspeaker out, left
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