w83977atf Winbond Electronics Corp America, w83977atf Datasheet - Page 103
w83977atf
Manufacturer Part Number
w83977atf
Description
Winbond I/o
Manufacturer
Winbond Electronics Corp America
Datasheet
1.W83977ATF.pdf
(207 pages)
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5.0 PARALLEL PORT
5.1 Printer Interface Logic
The parallel port of the W83977ATF makes possible the attachment of various devices that accept
eight bits of parallel data at standard TTL level. The W83977ATF 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.
disabling, power-down, and on selecting the mode of operation.
Table 5-1-1 and table 5-1-2 show the pin definitions for different modes of the parallel port.
TABLE 5-1-1 PARALLEL PORT CONNECTOR AND PIN DEFINITIONS
Notes:
n<name > : Active Low
1. Compatible Mode
2. High Speed Mode
3. For more information, refer to the IEEE 1284 standard.
CONNECTOR
HOST
2-9
10
11
12
13
14
15
16
17
1
OF W83977ATF
PIN NUMBER
31-26, 24-23
36
22
21
19
18
35
34
33
32
ATTRIBUTE
Refer to the configuration registers for more information on
PIN
I/O
O
O
O
O
I
I
I
I
I
- 84 -
PD<0:7>
BUSY
nERR
nSLIN
nSTB
nACK
SLCT
nAFD
nINIT
SPP
PE
PD<0:7>
nDStrb
nWrite
nAStrb
Select
nError
nWait
EPP
nInit
Intr
PE
Publication Release Date:April 1998
nSTB, HostClk
PD<0:7>
nACK, PeriphClk
BUSY, PeriphAck
PEerror, nAckReverse
SLCT, Xflag
nAFD, HostAck
nFault
nINIT
nSLIN
W83977ATF
1
1
1
, nReverseRqst
, nPeriphRequest
, ECPMode
PRELIMINARY
2
ECP
2
2
2
2
Revision 0.52
2
2
2
2
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