W83977G Winbond Electronics Corp America, W83977G Datasheet - Page 89
W83977G
Manufacturer Part Number
W83977G
Description
W83877TF plus KBC, CIR, RTC, Pb-free
Manufacturer
Winbond Electronics Corp America
Datasheet
1.W83977G.pdf
(182 pages)
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8. PARALLEL PORT
8.1
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
Notes:
n<name > : Active Low
1. Compatible Mode
2. High Speed Mode
3. For more information, refer to the IEEE 1284 standard.
CONNECTOR
W83977F-A/ W83977G-A/ W83977AF-A/ W83977AG-A
HOST
Printer Interface Logic
2-9
10
11
12
13
14
15
16
17
1
OF W83977F/ AF
PIN NUMBER
31-26, 24-23
36
22
21
19
18
35
34
33
32
ATTRIBUTE
PIN
I/O
O
O
O
O
I
I
I
I
I
-81 -
PD<0:7>
BUSY
nSLIN
nACK
SLCT
nAFD
nERR
nSTB
nINIT
SPP
PE
PD<0:7>
nDStrb
nAStrb
nWrite
Select
nError
nWait
EPP
nInit
Publication Release Date: May 2006
Intr
PE
nSTB, HostClk 2
PD<0:7>
nACK, PeriphClk 2
BUSY, PeriphAck 2
PEerror, nAckReverse 2
SLCT, Xflag 2
nAFD, HostAck 2
nFault 1 , nPeriphRequest 2
nINIT 1 , nReverseRqst 2
nSLIN 1 , ECPMode 2
ECP
Revision 0.60
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