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參數資料
型號: W83877AF
廠商: WINBOND ELECTRONICS CORP
元件分類: 外設及接口
英文描述: Multi-Function I/O Port Controller(多功能輸入/輸出口控制器)
中文描述: MULTIFUNCTION PERIPHERAL, PQFP100
封裝: QFP-100
文件頁數: 88/171頁
文件大小: 1634K
代理商: W83877AF
W83877AF
Publication Release Date: Dec. 1996
Preliminary Version 0.52
- 86 -
5.0 PARALLEL PORT
5.1 Printer Interface Logic
The parallel port of the W83877AF makes possible the attachment of various devices that accept
eight bits of parallel data at standard TTL level. The W83877AF 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), Extension Adapter mode (EXTADP), and JOYSTICK mode 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-A Parallel Port Connnector and Pin Definition for SPP/EPP/ECP Modes
HOST
CONNECTOR
PIN NUMBER
OF W83877AF
PIN
ATTRIBUTE
SPP
EPP
ECP
1
19
O
nSTB
nWrite
nSTB, HostClk
2-9
9-14,16-17
I/O
PD<0:7>
PD<0:7>
PD<0:7>
10
26
I
nACK
Intr
nACK, PeriphClk
11
24
I
BUSY
nWait
BUSY, PeriphAck
2
12
27
I
PE
PE
PEerror, nAckReverse
2
13
28
I
SLCT
Select
SLCT, Xflag
14
20
O
nAFD
nDStrb
nAFD, HostAck
2
15
29
I
nERR
nError
nFault
1
, nPeriphRequest
2
16
21
O
nINIT
nInit
nINIT
1
, nReverseRqst
2
17
22
O
nSLIN
nAStrb
nSLIN
1
, ECPMode
2
Notes:
n<name > : Active Low
1. Compatible Mode
2. High Speed Mode
3. For more information, refer to the IEEE 1284 standard.
TABLE 5-1-B Parallel Port Connector and Pin Definition for EXTFDD and EXT2FDD Modes
HOST
CONNECTOR
PIN NUMBER
OF W83877A
PIN
ATTRIBUTE
SPP
PIN
ATTRIBUTE
EXT2FDD
PIN
ATTRIBUTE
EXTFDD
1
19
O
nSTB
---
---
---
---
2
9
I/O
PD0
I
INDEX2
I
INDEX2
3
10
I/O
PD1
I
TRAK02
I
4
11
I/O
PD2
I
WP2
I
5
12
I/O
PD3
I
RDATA2
I
RDATA2
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