Ic Pin Function Description - Sony CDX-656 Service Manual

CDX-656/656X

6-12. IC PIN FUNCTION DESCRIPTION

• MAIN BOARD IC201 MB90473PFV-G-111-BNDE1 (SYSTEM CONTROLLER)
Pin No. Pin Name
1, 2
RAMA5, RAMA6
3 ELVR
4 ELVF
5 LOADF
6 LOADR
7, 8 RAMA7, RAMA12
9 VSS
10 RAMA14
11 RAMWE
RAMA13, RAMA8,
12 to15
RAMA9, RAMA11
16 UNI SI
17 UNI SO
18 UNI CK
19 LEDDAT
20 LEDCLK
21 VCC
22 LEDLAT
23 CDON
24 ELVON
25 RX
26 TX
27 NC
28 EECLK
29 FL BOOT
30, 31 NC
32 EEDAT
33 AVCC
34 AVRH
35 AVSS
36 EHS
37 MCK
38, 39 KEY0, KEY1
40 VSS
41 FOK
42 GFS
43 SCLK
44 SENS
45 BUSON
46 BUCHK
47, 48 MD0, MD1
49 MD2
50 EJECT SW
51 MAGLK SW
30
I/O
O Address signal output terminal Not used
O Motor drive signal (elevator down direction) output
O Motor drive signal (elevator up direction) output
O Motor drive signal (load chucking direction) output
O Motor drive signal (save direction) output
O Address signal output terminal Not used
— Ground terminal
O Address signal output terminal Not used
O Write enable output terminal Not used
O Address signal output terminal
I Serial data input from the SONY bus interface
O Serial data output to the SONY bus interface
I Serial data transfer clock signal input from the SONY bus interface
O Not used
O Not used
— Power supply terminal (+3.3V)
O Not used
O D/A converter and servo section power supply on/off control signal output "H": power on
O Mechanism deck section power supply on/off control signal output "H": power on
I Input terminal at the flash memory data write mode Not used
O Output terminal at the flash memory data write mode Not used
O Not used
O Serial data transfer clock signal output to the EEPROM Not used
I Flash memory data write control signal input terminal "L" active Not used
O Not used
I/O Two-way data bus with the EEPROM Not used
— Power supply terminal (+3.3V) (for A/D converter)
I Reference voltage (+3.3V) input terminal (for A/D converter)
— Ground terminal (for A/D converter)
I Elevator height position detection signal input from the elevator height sensor (A/D input)
Input of detection signal for the fine adjustment (elevator height (address) adjustment) of elevator
I
height position (A/D input)
I Not used
— Ground terminal
I Focus OK signal input "H": OK
I Guard frame sync signal input "H": OK
O Serial data reading clock signal output to the CXD3017Q
I Internal status signal (sense signal) input
I Bus on/off control signal input from the SONY bus interface "H": bus on
Battery detection signal input "L": battery on
I
I Setting terminal for the CPU operational mode (fixed at "H" in this set)
I Setting terminal for the CPU operational mode (fixed at "L" in this set)
I Eject switch input terminal "L" active
I Magazine detect switch input terminal "L": magazine is set
Description
Not used