Sanyo NV-E7500 - Navigation System With DVD Player Service Manual page 19

EXPLANATION OF MICROCOMPUTER
IC 20 (HD6417706) 2/3
Pin
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
Signal I/O
/CS6 O Chip select 6
/CE2A O NC
GND GND
PTD[7] O Input/output port D
LVcc POWER +3.3V
/RAS O Lower32 Mbytes address RAS
PTD[1] O Input/output port D
/CAS O Lower32 Mbytes address CAS
PTD[3] I/O NC
PTD[4] I/O NC
/IOIS16 I Pull-up
/BACK O NC
/BREQ I Pull-up
/WAIT I Hardware wait request
/DACK0 O DMA acknowledge 0
/DACK1 O DMA acknowledge 1
PTE[2] I Input/output port E
PTE[3] I Input/output port E
PTF[0] I Input/output port F
PTF[1] I NC
PTF[2] I Input/output port F
PTF[3] I Pull-up
PTF[4] O Input/output port F
PTG[0] I Pull-up
GND GND
PTG[1] I Pull-up
LLVcc POWER +3.3V
PTG[2] I Pull-up
PTG[3] I Pull-up
PTF[5] I/O NC
PTF[6] I/O NC
/ASEMD0 I Pull-up
LLVcc POWER +1.9V
CAP1 - PLL1 external capacitance pin
GND GND
GND GND
CAP2 - PLL2 external capacitance pin
LLVcc POWER +1.9V
MD1 I Pull-up
GND GND
XTAL O Colck oscillator pin
EXTAL I External Clock/crystal oscillator pin
STATUS0 O Processor status
STATUS1 O Processor status
PTE[6] I/O Pull-up
PTE[7] I ADPCM SW
GND GND
CKIO O System clock input/output(39.3216MHz)
LVcc POWER +3.3V
TxD0 O SCI transmit data0
SCK0 I/O NC
TxD2 O Pull-up
SCPT[3] O SC port
SCPT[4] I/O NC
RxD0 I SCI receive data0
RxD2 I SCI receive data2
IRQ5 I External interrupt request(MAIN)
GND GND
/RESETM I Pull-up
LLVcc POWER +1.9V
Function
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