W83977F Datasheet, PDF (90/181 Pages) Winbond – PLUG & PLAY 1.0A COMPLIANT

W83977F/ W83977AF
PRELIMINARY
5. PARALLEL PORT
5.1 Printer Interface Logic
The parallel port of the W83977F/ AF makes possible the attachment of various devices that accept
eight bits of parallel data at standard TTL level. The W83977F/ AF 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
PIN NUMBER
OF W83977F/ AF
PIN
ATTRIBUTE
SPP
1
36
O
nSTB
2-9
31-26, 24-23
I/O
PD<0:7>
10
22
I
nACK
11
21
I
BUSY
12
19
I
PE
13
18
I
SLCT
14
35
O
nAFD
15
34
I
nERR
16
33
O
nINIT
17
32
O
nSLIN
Notes:
n<name > : Active Low
1. Compatible Mode
2. High Speed Mode
3. For more information, refer to the IEEE 1284 standard.
EPP
ECP
nWrite
PD<0:7>
Intr
nWait
PE
Select
nDStrb
nError
nInit
nAStrb
nSTB, HostClk²
PD<0:7>
nACK, PeriphClk²
BUSY, PeriphAck²
PEerror, nAckReverse²
SLCT, Xflag²
nAFD, HostAck²
nFault¹, nPeriphRequest²
nINIT¹, nReverseRqst²
nSLIN¹ , ECPMode²
TABLE 5-1-2 PARALLEL PORT CONNECTOR AND PIN DEFINITIONS
HOST
PIN NUMBER OF
CONNECTOR
W83977F/ AF
PIN
ATTRIBUTE
SPP
PIN
ATTRIBUTE
1
36
O
nSTB
---
2
31
I/O
PD0
I
3
30
I/O
PD1
I
4
29
I/O
PD2
I
5
28
I/O
PD3
I
6
27
I/O
PD4
I
7
26
I/O
PD5
---
EXT2FDD
---
INDEX 2
TRAK 02
WP2
RDATA 2
DSKCHG2
---
PIN
ATTRIBUTE
---
I
I
I
I
I
---
EXTFDD
---
INDEX 2
TRAK 02
WP2
RDATA 2
DSKCHG2
---
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Publication Release Date: January 1997
Revision 0.50