P52
Hardware
3-7
3.4.1
Jumpers and Headers
The jumpers and connectors on the P50 are listed below.
Name Size Function
Possible
Configuration
J1
20x2
main expansion port
J2
20x2
main expansion port
J3
20x2
PPI TTL I/Os / Q.D. signals
PPI(U1), Q.D.(U6 and U8)
J4
17x2
HV and opto-couplers
HV(U13 and U14), opto (P1-P8)
J5
10x2
ADC and DAC lines
ADC(U15), ADC(U22) , DAC(U3)
H0 2x1
+12V
Jumpers V+ from U19 to +12V. Board
should not
take in any voltage higher than 12 Volts!
H1
2x1
+VI, GND
Input voltage to board
H2
5x2
SER0 (DEBUG), RS232
H3 5x2
SER1,
RS232
H4 5x2
SCC2691:
RS232/485
TXD, RXD, GND
Install RS232 or RS485 driver for 3
rd
UART on the
host controller
H7
3x1
Ethernet chip select selector
586-Engine, jumper on pins 1&2
H8
2x1
VOFF
Jumpers VOFF to Ground
3.4.2
Expansion Headers J1 and J2
J2 Signal
GND 40 39 VCC
38 37 /ET
36 35
TXD0
34 33 /INT
RXD0
32 31 /RTS1
30 29
TXD1
28 27
RXD1
26 25
24 23 P22
/CTS1
22 21 P21
20 19
18 17
16 15
14 13
12 11
10
9
8 7
6 5
4 3
GND
2 1
J1 Signal
VCC 1 2
GND
MPO 3 4
CLK
RXD 5 6
GND
TXD 7 8
D0
VOFF 9 10
D1
11
12
D2
D15 13
14
D3
/RST 15
16
D4
RST 17
18
D5
/CS6 19
20
D6
D14 21
22
D7
D13 23
24
GND
25
26
A7
D12 27
28
A6
/WR
29
30
A5
/RD 31
32
A4
D11 33
34
A3
D10 35
36
A2
D9 37
38
A1
D8 39
40
A0
Table 3.1 J1 and J2, 20x2 expansion ports for P52
Signal definitions for J1:
VCC
+5V power supply
GND Ground
CLK
Software programmable clock output from host