Sony CDX-F5500 Service Manual page 18

CDX-F5500/F5505X
• IC500 MN101E01KDE (SYSTEM CONTROL) (MAIN BOARD (2/2))
Pin No. Pin Name
1 DAVDD
2 NCO
3 DAVSS
4 UNISO
5 UNISI
6 UNICKO
7 RETRA_SW
8, 9 NCO
10 VDD1
11 MMOD
12 OSCOUT
13 OSCIN
14 VSS1
15 XIN
16 XOUT
17 VDD2
18 MOD1
19 RESET
20 RCIN1
21 ACCIN
22 TESTIN
23 TELATT
24 ATT
25 ADON
26 NCO
27 KEYACK
28 TUATTIN
29 CDON
30 CDMON
31 BUIN
32 to 35 NCO
36 BUSON
37 SYSRST
38 to 41 NCO
42 Z_MUTE
43 to 49 NCO
50 BBESEL
51 NCO
52 AREASEL1
53 AREASEL0
54 to 56 NCO
57 EJECT_OK_SW
58 PANELSW
59 DIAG
60 VOLATT
61 NOSESW
62 NCO
63 VSS2
64 TUATT
65 NCO (TUON)
66 NSMASK
18
I/O
— D/A converter power supply (+) pin (+3.3 V)
O Not used. (Open)
— D/A converter power supply (–) pin
O SONY-BUS data output
I SONY-BUS data input
O SONY-BUS clock output
I Not used. (Open)
O Not used. (Open)
— Power supply pin (+3.3 V)
I Not used. (Fixed at L in this set)
O Main clock output (27.648 MHz)
I Main clock input (27.648 MHz)
— Ground
I Sub clock input (32.768 kHz)
O Sub clock output (32.768 kHz)
— Power supply pin (+3.3 V)
— Not used. (Fixed at H in this set)
I Microcomputer reset input
I Rotary commander SHIFT key input
I Accessory power supply detection input
I Test mode detection input
I Telephone attenuator detection input
O Audio mute control output
O A/D converter power supply control output
O Not used. (Open)
I Key acknowledge detection input
I Mute zero cross detection input from tuner unit. (AEP, UK model)
I Servo power supply control input from CD system control IC.
I Loading 6V power supply control input from CD system control IC.
I Backup power supply detection input
O Not used. (Open)
O BUS ON output to CD system control IC.
O System reset output to CD system control IC.
O Not used. (Open)
I Mute zero cross detection input from CD system control IC.
O Not used. (Open)
I Fixed at H in this set.
O Not used. (Open)
I Destination area initial setting input (L: except E model, H: E model)
Destination area initial setting input (L: AEP, UK model, H: CDX-F5505X)
I
(L: 10K, H: 9K (E model))
O Not used. (Open)
O Not used. (Open)
I Front panel detach detection input (L: with front panel, H: without front panel)
I Mode input from power amp IC.
O Attenuator control output to electronic volume IC.
O Nose detection output
O Not used. (Open)
— Ground
O Tuner mute control output
O Not used. (Open)
O Noise mask output (AEP, UK model)
Pin Description