Sanyo NV-E7500 - Navigation System With DVD Player, Service Manual

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EXPLANATION OF MICROCOMPUTER
IC 30 (LC24072B) 1/2
Pin
1
2
3
4
5
6
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8
9
10
11
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13
14
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LVcc
Signal I/O Function
HD8
HD7
HD9
HD6
HD10
HD5
HD11
HD4
HD12
HD3
HD13
GND
HD2
HD14
HD1
HD15
HD0
LVcc
HDREQ
/HDR
/HWR
/HIORDY
/HDACK
HA1
HA0
HA2
/HCS1
/HCS3
GND
LVcc
FM-ASIC
ASIC-FM
BEACON-ASIC
ASIC-BEACON
GYRO-ASIC
ASIC-GYRO
MAIN-ASIC
ASIC-MAIN
IRQ_FM
IRQ_BEACON
IRQ_GYRO
-
VCK
SC
PLLCK
GND
/CS_CARD
/LOAD
SI
LRCK
SCK
/WAIT_Q2
/CS_Q2UGM
/CS_Q2REG
ADPCM_SW
GND
/RST_3
CKIO
GND
LVcc
/FCS
/FEW.
/DREQ1
/DREQ0
POWER
O
O
O
O
I
O
O
I
POWER
I
O
I
I
O
I
O
O
O
O
O
O
POWER
I
O
I
O
I
O
I
O
O
O
O
-
I
O
O
O
I
O
O
O
GND
+3.3V
ATAPI Command Register chip select
GND
+3.3V
NC
NC
NC
ATAPI DMA transmit request
ATAPI Read strobe
ATAPI Write strobe
ATAPI Wait
ATAPI DMA transmit strobe
ATAPI Address bus
ATAPI Address bus
ATAPI Address bus
ATAPI Control Register chip select
NC
GYRO data received
GYRO data transmission
SH communication
SH communication
NC
NC
GYRO data cut in
NC
Clock input(7.15909MHz)
3.579545MHz output
15.7342MHz output
G
PC card chip select
BOOT Soft load
Serial data output(Voice guidance)
L/R clock(Voice guidance)
Clock output(Voice guidance)
Q2i Wait input
Q2i UGM chip select
Q2i inside register chip select
ADPCM switch
GND
Power on reset
System clock input(39.3216MHz)
DMA request
DMA request
I/O ATAPI data bus
I/O ATAPI data bus
GND
+3.3V
Flash memory chip select
Flash memory write strobe