7I90HD 9
CONNECTORS
EPP/SPI CONNECTOR
P4 is the EPP printer port / SPI host interface connector. P4 is a 26 pin header. P4's
pin-out matches stands DB25 printer port pin-out, allowing a simple flat cable with a
DB25M IDC connector on one end and a 26 pin female header on the other end to
interface the hosts printer port to the 7I90HD.
P4 PIN
DB25 PIN
SIGNAL
P4 PIN
DB25 PIN
SIGNAL
1
1
/STROBE
2
14
/AUTOFD
3
2
PD0
4
15
/FAULT
5
3
PD1
6
16
/INIT
7
4
PD2
8
17
/SELECTIN
9
5
PD3
10
18
GND
11
6
PD4 - SPICLK
12
19
GND
13
7
PD5 - SPIIN
14
20
GND
15
8
PD6 - SPIOUT
16
21
GND
17
9
PD7 - /SPICS
18
22
GND
19
10
/ACK
20
23
GND
21
11
BUSY
22
24
GND
23
12
PERROR
24
25
GND
25
13
SELECT
26
VCC
