W83977F-A Datasheet, PDF (89/182 Pages) Winbond – WINBOND I/O

W83977F-A/ W83977G-A/ W83977AF-A/ W83977AG-A
8. PARALLEL PORT
8.1 Printer Interface Logic
The parallel port of the W83977F/G, W83977AF/AG makes possible the attachment of various
devices that accept eight bits of parallel data at standard TTL level. The W83977F/G, W83977AF/AG
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 8-1 shows the pin definitions for different modes of the parallel port.
TABLE 8-1-1 PARALLEL PORT CONNECTOR AND PIN DEFINITIONS
HOST
CONNECTOR
1
2-9
10
11
12
13
14
15
16
17
PIN NUMBER
OF W83977F/ AF
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
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
Notes:
n<name > : Active Low
1. Compatible Mode
2. High Speed Mode
3. For more information, refer to the IEEE 1284 standard.
Publication Release Date: May 2006
-81 -
Revision 0.60