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W83977EF-AW Datasheet(PDF) 55 Page - Winbond

Part # W83977EF-AW
Description  WINBOND ISA I/O
Download  142 Pages
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Manufacturer  WINBOND [Winbond]
Direct Link  http://www.winbond.com
Logo WINBOND - Winbond

W83977EF-AW Datasheet(HTML) 55 Page - Winbond

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W83977EF-AW/W83977EG-AW
Publication Release Date: Apr. 2006
-53-
Revision 1.2
7. PARALLEL PORT
7.1 Printer Interface Logic
The parallel port of W83977EF/EG makes possible the attachment of various devices that accept
eight bits of parallel data at standard TTL level. W83977EF/EG 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 7-1 shows the pin definitions for different modes of the parallel port.
TABLE 7-1-1 PARALLEL PORT CONNECTOR AND PIN DEFINITIONS
HOST
CONNECTOR
PIN NUMBER
OF W83977EF
PIN
ATTRIBUTE
SPP
EPP
ECP
1
36
O
nSTB
nWrite
nSTB, HostClk2
2-9
31-26, 24-23
I/O
PD<0:7>
PD<0:7>
PD<0:7>
10
22
I
nACK
Intr
nACK, PeriphClk2
11
21
I
BUSY
nWait
BUSY, PeriphAck2
12
19
I
PE
PE
PEerror, nAckReverse2
13
18
I
SLCT
Select
SLCT, Xflag2
14
35
O
nAFD
nDStrb
nAFD, HostAck2
15
34
I
nERR
nError
nFault1, nPeriphRequest2
16
33
O
nINIT
nInit
nINIT1, nReverseRqst2
17
32
O
nSLIN
nAStrb
nSLIN1 , ECPMode2
Notes
:
n<name > : Active Low
1. Compatible Mode
2. High Speed Mode
3. For more information, refer to the IEEE 1284 standard.


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