3Jtech uModem Technical Document page 6

Table 1 ZD1051 Pin Assignment and Description
Pin No. Pin Name
1 NC
2 FECE1#
3 GND
4 EPRD#
5 DL0
6 DL8
7 DL1
8 DL9
9 DL2
10 DL10
11 VDD18
12 DL3
13 DL11
14 VDD33
15 DL4
16 DL12
17 DL5
18 DL13
19 GND
20 DL6
21 DL14
22 DL7
23 DL15
24 A16
25 NC
26 VDD18
27 EPWR#
28 WP#
29 NC
30 NC
31 A17
32 VPP#
33 A9
34 A0
35 A10
36 GND
37 A3
38 A11
39 A2
40 A12
41 A1
42 SRAMW#
43 VDD18
44 DH8
45 DH7
46 DH9
47 DH6
48 DH10
49 DH5
50 DH11
51 DH4
52 GND
53 VDD33
54 DH12
55 DH3
56 DH13
57 DH2
2003/6 From 3JTech
I/O Description
I Reserved
O Chip select signal for program memory
Power Digital ground
O Read strobe signal for program memory
I/O Low speed data bus bit 0
I/O Low speed data bus bit 8
I/O Low speed data bus bit 1
I/O Low speed data bus bit 9
I/O Low speed data bus bit 2
I/O Low speed data bus bit 10
Power 1.8V power
I/O Low speed data bus bit 3
I/O Low speed data bus bit 11
Power 3.3V power
I/O Low speed data bus bit 4
I/O Low speed data bus bit 12
I/O Low speed data bus bit 5
I/O Low speed data bus bit 13
Power Digital ground
I/O Low speed data bus bit 6
I/O Low speed data bus bit 14
I/O Low speed data bus bit 7
I/O Low speed data bus bit 15
O Address bus bit 16
O Reserved
Power 1.8V power
O Write strobe signal for program memory
O Write protect signal for FEPROM
O Reserved
O Reserved
O Address bus bit 17
Control power supply for FEPROM programming and
O
erasing
O Address bus bit 9
O Address bus bit 0
O Address bus bit 10
Power Digital ground
O Address bus bit 3
O Address bus bit 11
O Address bus bit 2
O Address bus bit 12
O Address bus bit 1
O Write strobe signal for SRAM
Power 1.8V power
I/O High speed data bus bit 8
I/O High speed data bus bit 7
I/O High speed data bus bit 9
I/O High speed data bus bit 6
I/O High speed data bus bit 10
I/O High speed data bus bit 5
I/O High speed data bus bit 11
I/O High speed data bus bit 4
Power Digital ground
Power 3.3V power
I/O High speed data bus bit 12
I/O High speed data bus bit 3
I/O High speed data bus bit 13
I/O High speed data bus bit 2
Revision 1.0
Research & Development
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