Ic Pin Function Description; Control Ic; (Ic101:Lc87F05J2A-F59Ao-E (Av-117 Board)) - Sony RDR-HX950 Service Manual

5-1. IT CONTROL IC

(IC101:LC87F05J2A-F59AO-E (AV-117 BOARD))

Pin No. Pin name
1 NC
2 NC
3 NC
4 WDT
5 ACDET
6 HMS_TO_T
7 IR
8 RESET
9 TX1
1 0 TX2
1 1 GND
1 2 CF1
1 3 CF2
1 4 VDD1
1 5 MODEL 1
1 6 MODEL 2
1 7 KEY1
1 8 KEY2
1 9 KEY3
2 0 AGC
2 1 BATTDET
2 2 FUNC
2 3 SDET3
2 4 SDET2
2 5 SDET1
2 6 AVLOUT
2 7 SDA
2 8 SCL
2 9 XRST
3 0 NC
3 1 AFT
3 2 NC
3 3 XAMUTE2
3 4 RCSEL1
3 5 RCSEL2
3 6 NC
3 7 DDCSW1
3 8 DDCSW2
3 9 GND
4 0 VDD4
4 1 FUNC_ON
4 2 SQUEEZE
4 3 CAPACTIOR
4 4 NC
4 5 BLAIR
4 6 P_SAVE
4 7 XSCMUTE
4 8 AVLTH
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SECTION 5

IC PIN FUNCTION DESCRIPTION

I/O
— Not used
— Not used
— Not used
I WDT for microcomputer runaway detection
I Input of IC's VDD detect signal
I Input of communication handshake from ENC/DEC IC's
I Input of remote control receive signal
I Input of system reset signal
I Input of sub-clock (32.768KHz)
O Output of sub-clock (32.768KHz)
— Analog GND
I Input of main-clock (15MHz)
O Output of main-clock (15MHz)
— Power supply input
I Input of destination selection [1]
I Input of destination selection [2]
I Input of function key signal [1]
I Input of function key signal [2]
I Input of function key signal [3]
I Input of Auto Gain Control signal
— Input for battery voltage check
— Fixed at "L"
I Input of line 3 S-Video detection signal
I Input of line 2 S-video detection signal
I Input of line 1 S-Video detection signal
O Output of n-link switch signal
I/O Input/output of IIC data signal
O Output of IIC clock signal
O Output of system reset signal for VDEC IC
— Not used
I Input of tuner AFT control signal
— Not used
O Output of audio muting signal
— Not used
— Not used
— Not used
O Output of DDC IC switching signal [1]
O Output of DDC IC switching signal [2]
— Analog GND
— Power supply input
— Not used
— Not used
I Input of IC's VDD detect signal
— Not used
— Not used
— Not used
— Not used
— Not used
5-1
RDR-GX350/HX750/HX950
Function