– 43 –
• MAIN BOARD IC901 ES3210 (MPEG AUDIO/VIDEO DECODER)
Pin No. Pin Name I/O Function
1 VCC —
Power supply terminal (+3.3V)
2 DRAS B O
Row address strobe signal output to the D-RAM (IC903) “L” active
3 DWE B O
Write enable signal output to the D-RAM (IC903) “L” active
4 to 12 MA0 to MA8 O
Address signal output to the D-RAM (IC903)
13 to 28
DBUS0 to
DBUS15
I/O
Two-way data bus with the D-RAM (IC903)
29 RESET B I
Reset signal input from the system controller (IC701) “L”: reset
30 VSS —
Ground terminal
31 VCC —
Power supply terminal (+3.3V)
32 to 39 YUV0 to YUV7 O
Video data output to the video encoder (IC920)
(YUV; Y: luminance signal, UV: Screen video interface chrominance data bus)
40 VSSCN B O
Vertical synchronous signal output to the video encoder (IC920)
41 HSSCN B O
Horizontal synchronous signal output to the video encoder (IC920)
42 CLK I
System clock signal input terminal Not used (open)
43 PCLK2XSCN I
System clock signal (27 MHz) input from the video encoder (IC920)
44 PCKLQSCN O
Pixel clock qualifier output for the screen video interface Not used (open)
45 AUX0 O
Sub control signal output terminal Not used (open)
46 AUX1 I
Serial data input from the system controller (IC701)
47 AUX2 O
Serial data output to the system controller (IC701)
48 AUX3 O
NTSC/PAL mode selection signal output to the video encoder (IC920)
“L”: NTSC, “H”: PAL
49 AUX4 O
Sub control signal output terminal Not used (open)
50 VSS —
Ground terminal
51 VCC —
Power supply terminal (+3.3V)
52 AUX6 O
Communication request signal output to the system controller (IC701)
53 AUX5 I
Ready signal input from the system controller (IC701)
54 AUX7 I
Communication request signal input from the system controller (IC701)
55 to 62 LD0 to LD7 I
Data input from the program ROM (IC902)
63 LWR B O
Write enable signal output terminal “L” active Not used (open)
64 LOE B O
Output enable signal output to the program ROM (IC902) “L” active
65 LCS3 B O
Chip select signal output to the program ROM (IC902) “L” active
66 LCS1 B I
Serial data transfer clock signal input from the system controller (IC701) “L” active
67 LCS0 B O
Chip select signal output terminal “L” active Not used (open)
68 to 79 LA0 to LA11 O
Address signal output to the program ROM (IC902)
80 VSS —
Ground terminal
81 VPP —
Power supply terminal (+5V) (digital system)
82 to 86 LA12 to LA16 O
Address signal output to the program ROM (IC902)
87 LA17 O
Address signal output terminal Not used (open)
88 AUDIOCLK I
Audio master clock signal (16.9344 MHz) input from the D/A converter (IC320)
89 AOUT O
Audio interface serial data output to the D/A converter (IC320)
90 TBCK O
Bit clock signal (2.8224 MHz) output to the D/A converter (IC320)
91 ATFS O
L/R sampling clock signal (44.1 kHz) output to the D/A converter (IC320)
92 DOE B O
Output enable signal output to the D-RAM (IC903) “L” active
93 AIN I
Audio interface serial data input terminal Not used (open)
94 RBCK I
Audio interface bit clock signal (2.8224 MHz) input terminal Not used (open)
95 ARFS I
Audio interface L/R sampling clock signal (44.1 kHz) input terminal Not used (open)
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