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參數資料
型號: W83877TF
廠商: WINBOND ELECTRONICS CORP
元件分類: 外設及接口
英文描述: Multi-Function I/O Port Controller(用于個人計算機的多功能輸入/輸出口控制器)
中文描述: MULTIFUNCTION PERIPHERAL, PQFP100
封裝: QFP-100
文件頁數: 53/154頁
文件大小: 821K
代理商: W83877TF
W83877TF
Publication Release Date: March 1998
- 49 -
Version 0.61
4.0 PARALLEL PORT
4.1 Printer Interface Logic
The parallel port of the W83877TF makes possible the attachment of various devices that accept
eight bits of parallel data at standard TTL level. The W83877TF 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 4-1 shows the pin definitions for different modes of the parallel port.
TABLE 4-1-A Parallel Port Connector and Pin Definition for SPP/EPP/ECP Modes
HOST
CONNECTOR
PIN NUMBER
OF W83877TF
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
BUSY, PeriphAck
2
PEerror, nAckReverse
2
11
24
I
BUSY
nWait
12
27
I
PE
PE
13
28
I
SLCT
Select
SLCT, Xflag
nAFD, HostAck
2
nFault
1
, nPeriphRequest
2
nINIT
1
, nReverseRqst
2
nSLIN
1
, ECPMode
2
14
20
O
nAFD
nDStrb
15
29
I
nERR
nError
16
21
O
nINIT
nInit
17
22
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.
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