Standard Mode; Epp Mode - Kontron cPCI-DMXS64GX Technical Reference Manual

cPCI-DMXS64GX Technical Reference Manual
The differences between Standard, EPP, and ECP modes appear in the signal assignation of
the pins on the connector. Differences are described as follows:
Pin Number (J5)
A15 SLCT
B15 PE
C15 BUSY
D15 /ACK
E16 /SLCTIN
B17 /INIT
D17 /ERR
A18 ALF
E17 PD0
C17 PD1
A17 PD2
D16 PD3
C16 PD4
B16 PD5
A16 PD6
E15 PD7
1
Compatible mode
2
High Speed Mode
NOTE
To operate in EPP or ECP mode, ensure the peripheral is designed to
work in this mode and the BIOS setup is configured to support it.

2.6.1. Standard Mode

The Standard mode is unidirectional. It is supported to maintain the compatibility with the
IBM PC standard.

2.6.2. EPP Mode

The EPP (Enhanced Parallel Port) mode consists of a hardware independent method of
accessing a parallel port configured as EPP. It provides support for single I/O cycle as well
as the high performance block I/O transfers. The EPP mode always uses the most optimum
method for I/O transfers. For example, if the hardware supports it, EPP mode will perform
32-bit I/O block transfers.
Standard Mode EPP Mode
-
-
WAIT
/INTR
/ADDRSTRB
-
-
DATASTB
PD0
PD1
PD2
PD3
PD4
PD5
PD6
PD7
2.6
ECP Mode
SLCT
PERROR , ACKREVERS
1 2
BUSY , PERIPHACK
1 2
/ACK
/SLCTIN
/INIT , /REVERSERQST
1 2
/FAULT , /PERIPHRQST
1 2
ALF , HOSTACK
1 2
PD0
PD1
PD2
PD3
PD4
PD5
PD6
PD7