Service manual

21
LC-20VM2
LC-121M2E
LC-150M2E
7. INTEGRATED CIRCUIT TERMINAL ARRANGEMENTS
7-1. IC2001 (QFP, 80pins) MICRO CONTROLER
Terminal No. Terminal name I/O Function Type
1 N. C – —
2 N. C – —
3 SCL I/O I
2
C bus serial clock line OD
4 SDA I/O I
2
C bus serial data line OD
5 HP DET I Headphon input pickup OD
6 DCLK O Clock for communication OD
7 DOUT O Data output for communication OD
8 DIN I Data input for communication OD
9 FS MUT O Front speaker MUTE output OD
10 RS MUT O Rear speaker MUTE output OD
11 N. C – —
12 N. C – —
13 CSYNC I Composite sync signal input OD
14 KEY1 I Key input 1 OD
15 REQ O “H” in SECAM mode, “L” in other modes. PP
16 GAEN I G/A read enable PP
17 MRDY I I
2
C bus opening/connection selection input OD
18 SIN I 232C data input OD
19 SCLK I/O 232C clock signal PU
20 SOUT O 232C data output OD
21 1 VIN I DC/DC1V voltage input OD
22 5 VIN I DC/DC5V voltage input OD
23 SCAN O PAL scanning line switching OD
24 LMUTE O Lineout-Mute output OD
25 N. C – —
26 N. C – —
27 CNV s s GND connection —
28 φ O Timing output PP
29 RESET I Change to “Reset mode” in “L” state —
30 Xin I Microcomputer oscillator connection —
31 Xout O Microcomputer oscillator connection —
32 V s s I GND terminal —
33 STB O Microcomputer power OFF output PP
34 POWOUT O DC/DC control output PP
35 COCS O G/A chip selection output PP
36 DA1CS O D/A1 chip selection output PP
37 DA2CS O D/A2 chip selection output PP
38 232CCS O 232C chip selection output PP
39 N. C – —
40 N. C – —
41 L/R O When the right and left are reversed: H, Normal: L PP
42 YC O Dynamic YC separation PP
43 AV/RGB O Analog SW selection 2 PP
44 Y/COM O Analog SW selection 3 PP
45 IN/OUT O Video 2 input/monitor output switching PP
46 N358 O “H” in N358 mode, “L” in other modes. PP
47 N443 O “H” in N443 mode, “L” in other modes. PP
48 PAL O “H” in PAL mode, “L” in other modes. PU
49 SECAM O “H” in SECAM mode, “L” in other modes. PU