w83977ctf Winbond Electronics Corp America, w83977ctf Datasheet - Page 72

• Manufacturer Part Number: w83977ctf
• Description: Winbond I/o
• Manufacturer: Winbond Electronics Corp America

5.0 PARALLEL PORT
5.1 Printer Interface Logic
The parallel port of the W83977EF/CTF makes possible the attachment of various devices that
accept eight bits of parallel data at standard TTL level. The W83977EF/CTF 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 5-1 shows 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
W83977EF/CTF
PIN NUMBER
31-26, 24-23
OF
36
22
21
19
18
35
34
33
32
ATTRIBUTE
PIN
I/O
O
O
O
O
I
I
I
I
I
-63 -
PD<0:7>
BUSY
nSLIN
nACK
SLCT
nERR
nSTB
nAFD
nINIT
SPP
PE
PD<0:7>
nDStrb
nAStrb
nWrite
Select
nError
nWait
EPP
nInit
Publication Release Date: March 1999
Intr
PE
W83977EF/ CTF
nSTB, HostClk
PD<0:7>
nACK, PeriphClk
BUSY, PeriphAck
PEerror, nAckReverse
SLCT, Xflag
nAFD, HostAck
nFault
nINIT
nSLIN
PRELIMINARY
1
1
1
, nReverseRqst
, nPeriphRequest
, ECPMode
2
ECP
2
2
2
2
2
Revision A1
2
2
2