Terminal Functions Of Ics - Panasonic SC-EN17P Service Manual

18 Terminal Functions of ICs

· IC801 (MN101C74FAB1) Microprocessor
Pin No. Mark
1 - 4 COM0 - COM4
5 - 7 VLC3 -VLC1
8 C2
9 LCD_GND
10 PC1
11 PC2
12 CD_BOTTOM_SW
13 CD_TOP_SW
14 MBP1
15 MBP2
16 VSS
17 OSC1
18 OSC2
19 VDD
20 XI
21 XO
22 NMOD
23 NRESET
24 DMOD
25 VREF+
26 KEYSW
27 REGION
28 PDET
29 CRT
30 NC
31 CD_OPEN
32 CS_CLOSE
33 AG_DATA
34 AG_CLK
35 PLL_D0
36 PLL_D1
37 PLL_CLK
38 PLL_CE
39 MCLK
40 MDATA
41 STATUS
42 MLD
43 REST_SW
44 CD_RESET
45 MUTE_A
46 EX_BASS (D-BASS)
47 FAN_COUNT
48 REM_IN
49 ACDET
50 BLKCK
51 PCONT
52 CD_SET1
53 CD _SET2
54 CD_SET3
55 FAN_VCC
56 NC
57 E_CS
58 E_DATA
59 E_CLK
60 NC(TEST1)
61 NC(TEST2)
62 CD_LIGHT
63 NC
64 NC
I/O Function
O LCD common output
- LCD power supply
- Capacitor terminal for
pressure
I/O LCD GND
I Writing data
I/O Writing clock
I/O CD bottom switch
I/O CD top switch
O Beet proof 1
O Beet proof 2
- GND
I Main oscillator input (8MHz)
O Main oscillator output (8MHz)
- VDD +3.3V
I Sub oscillator input (32kHz)
O Sub oscillator output (32kHz)
I CD Memory mode select
I Reset
I Silial writing mode
- A/D converter reference
voltage
O Key input
O Aria/Model select
O Main voltage check
O CR timer
I N.C.
O CD open switch function
O CD close switch function
O ASP data output
O ASP clock output
O/I PLL data input
O/I PLL data output
O/I PLL CLK
O/I PLL chip select output
O/I CD LSI command clock
O/I CD LSI command data
I/O CD status
O/I CD LSI command load
I/O CD travers limit switch
O CD reset switch
I/O Audio Mute Output (L: MUTE
ON)
O EX_BASS setting
I N.C.
I/O Remocon input
I/O Ac detection
I/O CD subcode block clock input
I/O Power control output
I CD setting 1
I CD setting 2
I CD setting 3
I Not used. Connected with
GND exterminally through
resistance.
I N.C.
O EEPROM chip select
I/O EEPROM DATA
O EEPROM CLOCK
I TEST 1 terminal
I TEST 2 terminal
O CD panel lighting
I Not used
I Not used
Pin No. Mark
65 LIGHT
66 NC
67 NC
68 STBY_LED
69-100 SEG31-SEG0
39
SC-EN17P / SC-EN17PC
I/O Function
O Operation switch
I Not used
I Not used
O Standby_LED
O LCD Segment Output