
W83977TF
PRELIMINARY
Publication Release Date: March 1998
- 49 -
Revision 0.62
4. INFRARED (IR) PORT
The Infrared (IR) function provides point-to-point (or multi-point to multi-point) wireless
communication which can operate under various transmission protocols including IrDA 1.0 SIR,
SHARP ASK-IR. IR port shares the same port with UART B port in W83977TF. Please refer to
section
11.5
for configuration information.
5. PARALLEL PORT
5.1 Printer Interface Logic
The parallel port of the W83977TF makes possible the attachment of various devices that accept
eight bits of parallel data at standard TTL level. The W83977TF 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 5-1 shows the pin definitions for different modes of the parallel port.
TABLE 5-1-1
PARALLEL PORT CONNECTOR AND PIN DEFINITIONS
HOST
CONNECTOR
PIN NUMBER
OF W83977TF
PIN
ATTRIBUTE
SPP
EPP
ECP
1
36
O
nSTB
nWrite
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
2-9
31-26, 24-23
I/O
PD<0:7>
PD<0:7>
10
22
I
nACK
Intr
11
21
I
BUSY
nWait
12
19
I
PE
PE
13
18
I
SLCT
Select
14
35
O
nAFD
nDStrb
15
34
I
nERR
nError
16
33
O
nINIT
nInit
17
32
O
nSLIN
nAStrb
Notes:
n<name > : Active Low
1. Compatible Mode
2. High Speed Mode
3. For more information, refer to the IEEE 1284 standard.