Pioneer XC-IS21MD Service Manual page 81

PDG241B (U-COM ASSY : IC5501)
• System Control IC
•
Pin Function
No. Name I/O Description
1 CDLAT O CD LSI Latch
2 CD DATA O CD LSI Data
3 CDSYSMUTE O CD decoder mute control
4 CDRESET O CD LSI Reset
5 CDCONT O CD LSI power control
6 CDMUTE O CD mute control
7 CDSQSO I CD SUBQ data input
8 - O Open
9 CDSQCK O CD SUBQ clock
10 LINE 2 MUTE O Line 2 mute control
11 LINE 1 MUTE O Line 1 mute control
12 LINE CONT O Line ATT control
13 VOLCE O E-Volume LSI chip enabled
14 TOUCH I Touch sencer input
15 VOLDATA O E-Volume LSI data
16 VOLCLK O E-Volume LSI clock
17 SYSPOW O System power control
18 SCLK O System bus clock
19 SDATA I/O System bus data
20 SREQ I/O System bus reqest
21 SPCONT O Speaker relay control
22 SYSMUTE O System mute control
23 TXCE O TX LSI chip enabled
24 TXODATA O TX LSI data output
25 TXCLK O TX LSI clock
26 TXIDAT I TX LSI data input
27 TXMUTE O TX mute control
28 TXPOW O TX power control
29 PDSPOW O RDS power control
30 RDSDATA I RDS data input
31 - O
32 - O
33 - O
34 - O Open
35 - O
36 - O
37 - O
38 - O
39 BEEP O Beep control
40 RESET I System reset
No. Name I/O Description
41 Vss - GND
42 XTAL - Oscillator pulses
43 EXTAL I (12MHz)
44 LCDCE O LCD driver chip enabled
45 LCDRESET O LCD driver reset
46 LCDDATA O LCD driver data
47 LCDCLK O LCD driver clock
48 CDDOOR2 I CD Door detection input 2
49 CDDOOR1 I CD Door detection input 1
50 CDDOOR4 I CD Door detection input 4
51 CDDOOR3 I CD Door detection input 3
52 AVss - AD converter GND
53 AVref I AD converter reference voltage
54 AVdd - AD converter voltage
55 SIMUKE I Model type select input
56 PROTECT I Protect detection input
57 ST/TUNE I TX STEREO/TUNED input
58 JOGIN I JOG input
59 - I GND
60 KEY3 I Key input
61 KEY2 I Key input
62 KEY1 I Key input
63 B.LIGHT O LCD back light control
64 STBYLED O Standby LED control
65 OPTINCD O Optical output control (CD input)
66 OPTINAUX O Optical output control (AUX input)
67 MDSTB I MD mecha control data
68 MDMUTE I MD mecha control mute
69 MDRESET O MD mecha control reset
70 MDPDOWN O Power-down detection output of MD mecha
71 MDCMODE O MD converter FS mode
72 MDDAPOW O MD DAC power control
73 MDADPOW O MD ADC power control
74 MDDIF1 O MD audio format 0
75 MDDIFO O MD audio format 1
76 MDPBMUTE O MD PB mute control
77 RDSCLK I RDS clock input
78 ACPULS I AC pulse input
79 MDIDAT I MD mecha control data input
80 MDODAT O MD mecha control data output
XC-IS21MD
81