Pin No. Pin name I/O Function
38 SO1 O Serial bus 1 (for data output)
39 SC1 O Serial clock output
40 SI2 I Serial bus 2 (for data input)
41 SO2 O Serial bus 2 (for data output)
42 N.C – Not used
43 DREQ0 I Input of DMA-REQ 0 from AV DEC
44 DACK0/PE2 – Not used
45 IFCS O Chip select signal to IF CON
46 DREQ1 I Input of DMA-REQ 1 from OSD
47 DACK1 O Output of DMA-ACK 1 to OSD
48 EWC O Write control signal output to EEPROM
49 ECS O Chip select signal output to EEPROM
50 DACCS2 – Not used
51 PI1 – Not used
52 VSS – Ground
53 X1 O Clock output (12.5 MHz)
54 X0 I Clock input (12.5 MHz)
55 VCC – Power supply
56 NC – Not used
57 PMUTE O 32 PD signal output (AFMC: “H”)
58 PRST I 32 PD signal input (FILM: “L”)
59 DACCS0 – Not used
60 DACCS1 – Not used
61 48/44.1K O PLL FS control signal output (“H” = 48 k/“L” = 44.1 k)
62 MAMUTE O Audio mute signal output
63 WIDE O WIDE select signal output (“H” = 16 : 9/“L” = 4 : 3)
64 C – Capacitor (0.1uF) connect between ground
65 CS0X O External ROM chip select signal output
66 CS1X O External RAM chip select signal output
67 CS2X O Chip select signal output (for OSD)
68 CS3X O Chip select signal output (for OSD)
69 CS4X O Chip select signal output (for FBI)
70 CS5X O Chip select signal output (for H2GA)
Pin No. Pin name I/O Function
1–5 HA17-HA21 O Address bus A17-A21
6 HA22 – Not used
7 RGBSEL O Color difference signal/RGB signal select signal output
8 P70 – Not used
9 AVCC – Power supply
10 AVRH – Reference power supply (+3.3 V)
11 AVSS – Ground
12 AN0 I Set of mode 0
13 AN1 I Set of mode 1
14 AN2 I Set of mode 2
15 AN3 I
SCAN SELECT Switch (S401) input (PROGRESSIVE:
“L”, INTERLACE “M”, SELECTABLE: “H”)
16 XRST O System reset signal output
17 DISC/EXIT O Line input select signal output (DISC: “H”, EXT: “L”)
18 PH2/CS6 – Not used
19 CS7 – Not used
20 EUROV/Y O EURO V/Y select signal output
21 PH5 O DVD-RW gain select signal output (RW: “L”)
22 ARPRST O Reset signal output for ARP3
23 DRVMUTE O Drive mute signal output
24 VCC – Power supply
25 INT0 I Input of interrupt from AV DEC
26 INT1 I Input of interrupt from ARP3
27 INT2 I Input of interrupt from H2GA
28 INT3 I Input of interrupt from EEPROM
29 INT4 I Input of interrupt from IF CON
30 INT5 I Not used (fixed at “H”)
31 INT6 I Input of interrupt from AV DEC
32 INT7 I Input of interrupt from servo DSP
33 SI0 I Serial data input from IF CON and EEPROM
34 VSS – Ground
35 SO0 O Serial data output to IF CON and EEPROM
36 SC0 O Serial clock output to IF CON and EEPROM
37 SI1 I Serial bus 1 (for data input)
5-1. SYSTEM CONTROL PIN FUNCTION (MB-91 BOARD IC102)
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