1
VSSQ
-
GND
2
VCC USB
I
Voltage
3
D+
I/O USB Data (D+)
4
D-
I/O USB Data (D-)
5
VSS USB
-
GND
6
VCC RTC
I
Voltage
7
XTAL2
-
NC
8
EXTAL2
-
GND
9
VSS RTC
-
GND
10
VBUS/PTM6
I
USB Power Detect
11
MD6
-
GND
12
D31/PTB7/PINT15 I/O Data Bus
13
D30/PTB6/PINT14 I/O Data Bus
14
D29/PTB5/PINT13 I/O Data Bus
15
D28/PTB4/PINT12 I/O Data Bus
16
D27/PTB3/PINT11 I/O Data Bus
17
VSSQ
-
GND
18
D26/PTB2/PINT10 I/O Data Bus
19
VCCQ
I
Voltage
20
D25/PTB1/PINT9
I/O Data Bus
21
D24/PTB0/PINT8
I/O Data Bus
22
D23/PTA7/PINT7
I/O Data Bus
23
D22/PTA6/PINT6
I/O Data Bus
24
D21/PTA5/PINT5
I/O Data Bus
25
D20/PTA4/PINT4
I/O Data Bus
26
VSS
-
GND
27
D19/PTA3/PINT3
I/O Data Bus
28
VCC
I
Voltage
29
D18/PTA2/PINT2
I/O Data Bus
30
D17/PTA1/PINT1
I/O Data Bus
31
D16/PTA0/PINT0
I/O Data Bus
32
VSSQ
-
GND
33
D15
I/O Data Bus
34
VCCQ
I
Voltage
35
D14
I/O Data Bus
36
D13
I/O Data Bus
37
D12
I/O Data Bus
38
D11
I/O Data Bus
39
D10
I/O Data Bus
40
D9
I/O Data Bus
41
D8
I/O Data Bus
42
D7
I/O Data Bus
43
D6
I/O Data Bus
44
VSSQ
-
GND
45
D5
I/O Data Bus
46
VCCQ
I
Voltage
47
D4
I/O Data Bus
48
D3
I/O Data Bus
49
D2
I/O Data Bus
50
D1
I/O Data Bus
51
D0
I/O Data Bus
52
VSSQ
-
GND
53
A0/PTK0
-
NC
54
A1
-
NC
55
A2
O Address Bus
56
A3
O Address Bus
57
VSSQ
-
GND
58
A4
O Address Bus
59
VCCQ
I
Voltage
60
A5
O Address Bus
61
A6
O Address Bus
Pin
No.
IC3453: DSC MICROCOMPUTER
Signal Name
I/O
Explanation
62
A7
O Address Bus
63
A8
O Address Bus
64
A9
O Address Bus
65
A10
O Address Bus
66
A11
O Address Bus
67
A12
O Address Bus
68
A13
O Address Bus
69
VSSQ
-
GND
70
A14
O Address Bus
71
VCCQ
I
Voltage
72
A15
O Address Bus
73
A16
O Address Bus
74
A17
O Address Bus
75
A18
O Address Bus
76
A19/PTK1
O Address Bus
77
A20/PTK2
O Address Bus
78
VSS
-
GND
79
A21/PTK3
O Address Bus
80
VCC
I
Voltage
81
A22/PTK4
O Address Bus
82
A23/PTK5
O Address Bus
83
A24/PTK6
O Address Bus
84
A25/PTK7
-
NC
85
BS/PTC0
O Bus Cycle Start
86
RD
O Read Strobe
87
VSSQ
-
GND
88
WE0/DQMLL
O Write Enable (D7-D0 select)
89
VCCQ
I
Voltage
90
WE1/DQMLU
O Write Enable (D15-D8 select)
91
WE2/DQMUL/PTC1
O Write Enable (D23-D16 select)
92
WE3/DQMUU/AH/PTC2
O Write Enable (D31-D24 select)
93
RD/WR
O Read/Write
94
CS0
O Chip select 0
95
CS2/PTC3
-
NC
96
CS3/PTC4
O Chip select 3
97
CS4/PTC5
O Chip select 4
98
CS5A/PTC6
O Chip select 5A
99
CS5B/PTD6
O Chip select 5B
100 CS6A/PTC7
O Chip select 6A
101 CS6B/PTD7
O Chip select 6B
102 RASL/PTD0
O RAS, Lower 32Mbit Address (SDRAM)
103 RASU/PTD1
O RAS, Upper 32Mbit Address (SDRAM)
104 CASL/PTD2
O CAS, Lower 32Mbit Address (SDRAM)
105 VSSQ
-
GND
106 CASU/PTD3
O CAS, Upper 32Mbit Address (SDRAM)
107 CKE/PTD4
O Clock Enable (SDRAM)
108 PTD5/MD7
-
GND
109 BACK/PTG5
O BACK
110 BREQ/PTG6
I
BREQ
111 VSSQ
-
GND
112 WAIT/PTG7
I
Waite Signal
113 VCCQ
I
Voltage
114 DACK0/PTE0
O Power Suplly Transistor Control(USB)
115 DACK1/PTE1
O 48MHz Control ON/OFF
116 TEND0/PTE3
O DMA Transmit End
117 AUDSYNC/PTF4
-
NC
118 AUDATA0/PTF0/TO0
-
NC
119 AUDATA1/PTF1/TO1
-
NC
120 AUDATA2/PTF2/TO2
-
NC
121 AUDATA3/PTF3/TO3
-
NC
122 NA CDE/PTJ0
O Power Supply Transistor Control
Pin
No.
Signal Name
I/O
Explanation
13.15.1. DSC MPEG I/O TABLE
55