W83977EF Datasheet, PDF (61/150 Pages) Winbond – WINBOND I/O

W83977EF
5.0 PARALLEL PORT
5.1 Printer Interface Logic
The parallel port of the W83977EF makes possible the attachment of various devices that accept eight
bits of parallel data at standard TTL level. The W83977EF supports an IBM XT/AT compatible parallel
port (SPP), bi-directional parallel port (BPP), Enhanced Parallel Port (EPP), Extended Capabilities
Parallel Port (ECP), Extension FDD mode (EXTFDD), Extension 2FDD mode (EXT2FDD) on the
parallel port. Refer to the configuration registers for more information on disabling, power-down, and
on selecting the mode of operation.
Table 5-1 shows the pin definitions for different modes of the parallel port.
TABLE 5-1-1 PARALLEL PORT CONNECTOR AND PIN DEFINITIONS
HOST
CONNECTOR
1
2-9
10
11
12
13
14
15
16
17
PIN NUMBER
OF W83977EF
36
31-26, 24-23
22
21
19
18
35
34
33
32
PIN
ATTRIBUTE
O
I/O
I
I
I
I
O
I
O
O
SPP
nSTB
PD<0:7>
nACK
BUSY
PE
SLCT
nAFD
nERR
nINIT
nSLIN
Notes:
n<name > : Active Low
1. Compatible Mode
2. High Speed Mode
3. For more information, refer to the IEEE 1284 standard.
EPP
nWrite
PD<0:7>
Intr
nWait
PE
Select
nDStrb
nError
nInit
nAStrb
ECP
nSTB, HostClk²
PD<0:7>
nACK, PeriphClk²
BUSY, PeriphAck²
PEerror, nAckReverse²
SLCT, Xflag²
nAFD, HostAck²
nFault¹, nPeriphRequest²
nINIT¹, nReverseRqst²
nSLIN¹ , ECPMode²
Publication Release Date: April 2003
-55 -
Revision 1.1