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17
Pin I/O
1 LVcc PWR +3.3V
2 HD8
3 HD7
4 HD9
5 HD6
6 HD10
7 HD5
8 HD11
9 HD4
10 HD12
11 HD3
12 HD13
13 GND PWR 0V
14 HD2
15 HD14
16 HD1
17 HD15
18 HD0
19 LVcc PWR +3.3V
20 HDREQ
I ATAPI DMA transmit request
21 /HRD
O ATAPI Read strobe
ATAPI Write strobe
22 /HWR O
23 /HIORDY I ATAPI Wait
24 /HDACK O ATAPI DMA transmit strobe
25 HA1
O ATAPI Address bus
ATAPI Address bus
ATAPI Address bus
26 HA0
O
27 HA2
O
28 /HCS1
O ATAPI Control Register chip select
ATAPI Command Register chip select
29 /HCS3 O
30 GND PWR 0V
31 LVcc PWR +3.3V
32 FM-ASIC
I
33 ASIC-FM
O
34 BEACON-ASIC I
35 ASIC-BEACON O
36 GYRO-ASIC I
37 ASIC-GYRO
O
38 -
I Pull-up
39 - -
40 IRQ_FM O
41 IRQ_BEACON O
42 IRQ_GYRO
O
43 -
-
44 VCK I Clock input(7.15909MHz)
45 SC O 3.579545MHz output
46 PLLCK O 15.7342kHz output
47 GND PWR 0V
48 /CS_CARD O PC card chip select
49 /LOAD I BOOT Soft load
50 SI O Serial data output(Voice Gaideance)
L/R clock(Voice Gaideance)
Clock output(Voice Gaideance)
51 LRCK O
52 SCK O
53 /WAIT_Q2 I Q2i Wait input
54 /CS_Q2UGM O Q2i UGM chip select
I/O ATAPI data bus
ATAPI data bus
I/O
IC861 (LC24072B)1/2
Signal
Function
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
EXPLANATION OF MICROCOMPUTER