W83877ATF Datasheet, PDF (86/191 Pages) Winbond – enhanced version from Winbonds most popular I/O chip W83877F

W83877ATF
4.0 PARALLEL PORT
4.1 Printer Interface Logic
The parallel port of the W83877ATF makes possible the attachment of various devices that accept
eight bits of parallel data at standard TTL level. The W83877ATF 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), and 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 4-1 shows the pin definitions for different modes of the parallel port.
TABLE 4-1-A Parallel Port Connnector and Pin Definition for SPP/EPP/ECP Modes
HOST
CONNECTOR
1
2-9
10
11
12
13
14
15
PIN NUMBER
OF W83877ATF
19
9-14,16-17
26
24
27
28
20
29
PIN
ATTRIBUTE
O
I/O
I
I
I
I
O
I
16
21
O
17
22
O
Notes:
n<name > : Active Low
1. Compatible Mode
2. High Speed Mode
3. For more information, refer to the IEEE 1284 standard.
SPP
nSTB
PD<0:7>
nACK
BUSY
PE
SLCT
nAFD
nERR
nINIT
nSLIN
EPP
ECP
nWrite
PD<0:7>
Intr
nWait
PE
Select
nDStrb
nError
nInit
nAStrb
nSTB, HostClk
PD<0:7>
nACK, PeriphClk
BUSY, PeriphAck²
PEerror, nAckReverse²
SLCT, Xflag
nAFD, HostAck²
nFault¹, nPeriphRequest²
nINIT¹, nReverseRqst²
nSLIN¹ , ECPMode²
- 82 -
Publication Release Date: April 1998
Version 0.51