5-6. Ic Pin Function Description - Sony D-E880 Service Manual

5-6. IC PIN FUNCTION DESCRIPTION

• IC801 (SYSTEM CONTROLLER)
TMP88CM22F-1A28 (EXCEPT US: TYPE A), TMP88CM22F-1A35 (EXCEPT US: TYPE B), TMP88CM22F-1A42 (US)
Pin No. Pin Name
1 VSS
2 IRRMC
3 FOKI
4 AGCCON
5 XLEDDISP
VCC
6
SWITCHING
7 AMUTE
8 VCC2 ON
9 XRST
10 SCK
11 SDTI
12 SDTO
13 SLPOUT
14 SEL
15 CHGMNT1
16 VCDKEY
17 BATMNT
18
KEY
19
RMKEY
20
DCINMNT
21 OPEN
22
VREFL
23
VREFH
24
VDD
25
SCOR
26 GRSCOR
27 FG
28 BEEP
29 NC
30 RMSCK
31 RMDATI
32 RMDATO
33 RMRW
34 RMLAT
35 WFCKI
36 COMPON I
37 XNTSC
38 AVLS
I/O
— Ground terminal
I Not used (Fixed at "L")
I
Focus OK signal input from the digital servo processor (IC601) "L": NG, "H": OK
O AGC control pulse signal output terminal
O CHG/HOLD LED control signal output terminal Not used (open)
O Control signal output terminal for the switching power supply circuit
O Analog audio muting ON/OFF control signal output terminal "H": muting ON
O VCC2 voltage control signal output terminal
O
Reset signal output to the CXD3027R (IC601) "L": reset
O Serial data transfer clock signal output to the CXD3027R (IC601)
I Serial data input from the CXD3027R (IC601)
O Serial data output to the CXD3027R (IC601)
O
WAKE-UP control signal output terminal (for system standby reset)
I Plug-in detection signal input terminal of LINE OUT/OPTICAL OUT
I Battery charge voltage detection input from the power control (IC401)
I Key input from the S809, S810 (VOLUME +/–) and switch unit (A/D input)
I Battery voltage detection signal input terminal
I Key input from the switch unit (A/D input)
I Key input from the headphone with remote commander (A/D input)
DC input voltage detection input terminal (A/D input) and DC input jack use/no use detection
I
input terminal
CD door open/close detection switch (S801) input terminal
I
The stop status is reset with the falling edge of input signal
I Reference voltage input terminal (0V) for A/D converter
I Reference voltage input terminal (+2V) for A/D converter
— Power supply terminal (+2V)
I Sub-code sync (S0+S1) detection signal input from the CXD3027R (IC601)
I Communication clock signal input from the CXD3027R (IC601)
I FG pulse signal input from the spindle motor driver (IC402)
O Beep sound output to the headphone amplifier (IC351)
— Not used (Fixed at "H")
O Communication clock output to the communication format converter (IC802)
Communication data bus input of headphone with remote commander from the communication
I
format converter (IC802)
Communication data bus output of headphone with remote commander to the communication
O
format converter (IC802)
Read/write control signal output of headphone with remote commander to the communication
O
format converter (IC802)
Serial data latch pulse signal output of headphone with remote commander to the communication
O
format converter (IC802)
I Demodulation signal input from the CXD3027R (IC601)
I Not used (open) (Only US model: pull up)
I Not used (Fixed at "H")
AVLS (Automatic Volume Limiter System) switch (S803) input terminal
I
"L": normal mode, "H": limit mode
– 27 –
Description
"L": read mode, "H": write mode