Ic Pin Function Description - Sony CDX-747X Service Manual

CDX-747X
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7-13. IC PIN FUNCTION DESCRIPTION

• MAIN BOARD IC201 MB90473PFV-G-108-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
TE
L 13942296513
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
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42 GFS
43 SCLK
44 SENS
.
45 BUSON
46 BUCHK
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I/O
O Address signal output to the S-RAM Not used (open)
Motor drive signal (elevator down direction) output to the elevator motor drive (IC301)
O
"L" active *1
Motor drive signal (elevator up direction) output to the elevator motor drive (IC301)
O
"L" active *1
Motor drive signal (load chucking direction) output to the chucking motor drive (IC201)
O
"L" active *2
Motor drive signal (save direction) output to the chucking motor drive (IC201)
O
"L" active *2
O Address signal output to the S-RAM Not used (open)
— Ground terminal
O Address signal output to the S-RAM Not used (open)
O Write enable output to the S-RAM Not used (open)
O Address signal output to the S-RAM Not used (open)
I Serial data input from the SONY bus interface (IC302)
O Serial data output to the SONY bus interface (IC302)
I Serial data transfer clock signal input from the SONY bus interface (IC302)
O Not used (open)
O Not used (open)
— Power supply terminal (+3.3V)
O Not used (open)
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 (open)
O Output terminal at the flash memory data write mode Not used (open)
O Not used (open)
O Serial data transfer clock signal output to the EEPROM (IC203)
I Flash memory data write control signal input terminal "L" active Not used (fixed at "H")
O Not used (open)
I/O Two-way data bus with the EEPROM (IC203)
— 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)
Elevator height position detection signal input from the RV202 (elevator height sensor)
I
(A/D input)
Input of detection signal for the fine adjustment (elevator height (address) adjustment; RV201) of
I
elevator height position (A/D input)
I Not used (open)
— Ground terminal
I Focus OK signal input from the CXD3027R (IC101) "L": NG, "H": OK
I Guard frame sync signal input from the CXD3027R (IC101) "L": NG, "H": OK
O Serial data reading clock signal output to the CXD3027R (IC101)
x ao
y
I Internal status signal (sense signal) input from the CXD3027R (IC101)
i
I Bus on/off control signal input from the SONY bus interface (IC302) "H": bus on
Battery detection signal input "L": battery on
I
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