Aiwa RM-Z401P, Service Manual

Page: 26 / 35

5-2
Pin No.
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
Pin Name
IOA18
IOA19
IOA20
APLLVSS
APLLVDD3
ALE
IOOE#
IOWR#
IOCS#
DVSS
UP1_2
UP1_3
UP1_4
UP1_5
UP1_6
DVDD3
UP1_7
UP3_0
UP3_1
INT0#
IR
DVDD2
UP3_4
UP3_5
UWR#
URD#
DVSS
RD7
RD6
RD4
RD4
DVDD2
RD3
RD2
RD1
RD0
RWE#
CAS#
RAS#
RCS#
BA0
DVSS
RD15
RD14
RD13
RD12
DVDD3
RD11
RD10
RD9
I/O
I
I
I
–
–
I
I
I
I
–
I
I
I
I
I
–
I
I
I
I
I
–
I
I
I
I
–
I
I
I
I
–
I
I
I
I
O
O
O
O
O
–
I
I
I
I
–
I
I
I
Function
Flash address 18 / IO
Flash address 19 / IO
Flash address 20 / IO
Ground pin for audio clock circuitry
3.3V power pin for audio clock circuitry
Microcontroller address latch enable
Flash output enable, active low / IO
Flash write enable, active low / IO
Flash chip select, active low / IO
Ground pin for internal digital circuitry
Front u-com clock
Audio 6DAC clock
Audio 6DAC data
Front u-com transfer data
Serial clock
3.3V power pin for internal digital circuitry
Serial data
Audio 6DAC chip select
Front u-com read data
Microcontroller interrupt 0, active low
IR control input
2.5V power pin for internal digital circuitry
For PC Download (RS232C)
For PC Download (RS233C)
Microcontroller write strobe, active low
Microcontroller read strobe, active low
Ground pin for internal digital circuitry
DRAM data 7
DRAM data 6
DRAM data 5
DRAM data 4
2.5V power pin for internal digital circuitry
DRAM data 3
DRAM data 2
DRAM data 1
DRAM data 0
DRAM write enable, active low
DRAM column address strobe, active low
DRAM row address strobe, active low
DRAM chip select, active low
DRAM bank address 0
Ground pin for internal digital circuitry
DRAM data 15
DRAM data 14
DRAM data 13
DRAM data 12
3.3V power pin for internal digital circuitry
DRAM data 11
DRAM data 10
DRAM data 9