User manual

B. Specifications
128
J5 (Memory Expansion)
J5 is a 54-pin (dual 27-pin) socket with 0.1 inch contact spacing. J5 includes memory
address, data, and control signals for supporting RAM memory expansion and Flash
boot modules. The pin assignments are given in the "J5 Memory Expansion Pinout"
table below. The mating modules are the Ziatech ZT 96047 for an additional 4 Mbytes
of RAM and the Ziatech ZT 95190 for a flash boot module.
J5 Memory Expansion Pinout
Pin# Signal Type Description Pin# Signal Type Description
1 A1 Out CPU Address 28 /RD Out Read enable
2 A2 Out CPU Address 29 /MCS Out Module select
3 A3 Out CPU Address 30 /CE4 Out Chip select 4
4 A4 Out CPU Address 31 /CE5 Out Chip select 5
5 A5 Out CPU Address 32 /CE6 Out Chip select 6
6 A6 Out CPU Address 33 /CE7 Out Chip select 7
7 A7 Out CPU Address 34 /WE Out Write strobe
8 A8 Out CPU Address 35 /OE Out Output enable
9 A9 Out CPU Address 36 RSV ------ Reserved
10 A10 Out CPU Address 37 D15 In/Out Data 15
11 A11 Out CPU Address 38 D14 In/Out Data 14
12 GND ------ Ground 39 D13 In/Out Data 13
13 VCC ------ +5 Volts 40 D12 In/Out Data 12
14 A12 Out CPU Address 41 D11 In/Out Data 11
15 A13 Out CPU Address 42 VCC ------ +5 Volts
16 A14 Out CPU Address 43 GND ------ Ground
17 A15 Out CPU Address 44 D10 In/Out Data 10
18 A16 Out CPU Address 45 D9 In/Out Data 9
19 A17 Out CPU Address 46 D8 In/Out Data 8
20 A18 Out CPU Address 47 D7 In/Out Data 7
21 A19 Out CPU Address 48 D6 In/Out Data 6
22 /CE0 Out Chip select 0 49 D5 In/Out Data 5
23 /CE1 Out Chip select 1 50 D4 In/Out Data 4
24 /CE2 Out Chip select 2 51 D3 In/Out Data 3
25 /CE3 Out Chip select 3 52 D2 In/Out Data 2
26 /BLE Out Byte Low Enable 53 D1 In/Out Data 1
27 /MPR Out Module present 54 D0 In/Out Data 0