Read Sony CDX-T6NV Service Manual online
30
CDX-T6NV
5-12.
IC PIN FUNCTION DESCRIPTION
•
MAIN BOARD IC301 MB90473PFV-G-134-BNDE1 (SYSTEM CONTROLLER)
Pin No.
Pin Name
I/O
Description
1, 2
RAMA5, RAMA6
O
Address signal output to the S-RAM Not used
3
ELVR
O
Motor drive signal (elevator down direction) output to the elevator motor drive “L” active
4
ELVF
O
Motor drive signal (elevator up direction) output to the elevator motor drive “L” active
5
LOADF
O
Motor drive signal (load chucking direction) output to the chucking motor drive “L” active
6
LOADR
O
Motor drive signal (save direction) output to the chucking motor drive “L” active
7, 8
RAMA7, RAMA12
O
Address signal output to the S-RAM Not used
9
VSS
—
Ground terminal
10
RAMA14
O
Address signal output to the S-RAM Not used
11
RAMWE
O
Write enable output to the S-RAM Not used
12 to15
RAMA13, RAMA8,
RAMA9, RAMA11
O
Address signal output to the S-RAM Not used
16
UNI SI
I
Serial data input from the SONY bus interface
17
UNI SO
O
Serial data output to the SONY bus interface
18
UNI CK
I
Serial data transfer clock signal input from the SONY bus interface
19
LEDDAT
O
Not used
20
LEDCLK
O
Not used
21
VCC
—
Power supply terminal
22
LEDLAT
O
Not used
23
CDON
O
Power supply on/off control signal output terminal “H”: power on Not used
24
ELVON
O
Mechanism deck section power supply on/off control signal output “H”: power on
25
RX
I
Input terminal at the flash memory data write mode Not used
26
TX
O
Output terminal at the flash memory data write mode Not used
27
NC
O
Not used
28
EECLK
O
Serial data transfer clock signal output to the EEPROM Not used
29
FL BOOT
I
Flash memory data write control signal input terminal “L” active Not used
30, 31
NC
O
Not used
32
EEDAT
I/O
Two-way data bus with the EEPROM Not used
33
AVCC
—
Power supply terminal (for A/D converter)
34
AVRH
I
Reference voltage input terminal (for A/D converter)
35
AVSS
—
Ground terminal (for A/D converter)
36
EHS
I
Elevator height position detection signal input from the elevator height sensor (A/D input)
37
MCK
I
Input of detection signal for the fine adjustment (elevator height (address) adjustment) of elevator
height position (A/D input)
height position (A/D input)
38, 39
KEY0, KEY1
I
Not used
40
VSS
—
Ground terminal
41
FOK
I
Focus OK signal input from the DSP “L”: NG, “H”: OK
42
GFS
I
Guard frame sync signal input from the DSP “L”: NG, “H”: OK
43
SCLK
O
Serial data reading clock signal output to the DSP
44
SENS
I
Internal status signal (sense signal) input from the DSP
45
BUSON
I
Bus on/off control signal input from the SONY bus interface “H”: bus on
46
BUCHK
I
Battery detection signal input “L”: battery on
47, 48
MD0, MD1
I
Setting terminal for the CPU operational mode (fixed at “H” in this set)
49
MD2
I
Setting terminal for the CPU operational mode (fixed at “L” in this set)
50
EJECT SW
I
Eject switch input terminal “L” active
51
MAGLK SW
I
Magazine in/out detect switch input terminal “L”: magazine in/out operation
52
SCOR
I
Subcode sync (S0+S1) detection signal input from the DSP
53
GRSCOR
I
Subcode sync (S0+S1) detection signal input terminal Not used
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