w83977atg Winbond Electronics Corp America, w83977atg Datasheet - Page 91

• Manufacturer Part Number: w83977atg
• Description: W83877tf Plus Kbc, Gp I/o, Wake-up, Fir, Cir, Pb-free
• Manufacturer: Winbond Electronics Corp America

8. PARALLEL PORT
8.1
The parallel port of the W83977ATF/ATG makes possible the attachment of various devices that
accept eight bits of parallel data at standard TTL level. W83977ATF/ATG 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 8-1-1 and table 8-1-2 show 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
HOST
Printer Interface Logic
2-9
10
11
12
13
14
15
16
17
1
PIN NUMBER
W83977ATF
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
- 83 -
PD<0:7>
BUSY
nSLIN
nACK
nERR
nSTB
SLCT
nAFD
nINIT
SPP
W83977ATF/W83977ATG
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 0.6