參數(shù)資料
型號: W83977TF(EOL)
英文描述: W83877TF plus KBC. CIR. RTC
中文描述: W83877TF加比聯(lián)。稅務(wù)局局長。時(shí)鐘
文件頁數(shù): 72/161頁
文件大?。?/td> 592K
代理商: W83977TF(EOL)
W83977EF/ CTF
PRELIMINARY
Publication Release Date: March 1999
-63 -
Revision A1
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
HOST
CONNECTOR
PIN NUMBER
OF
W83977EF/CTF
PIN
ATTRIBUTE
SPP
EPP
ECP
1
36
O
nSTB
nWrite
nSTB, HostClk
2
2-9
31-26, 24-23
I/O
PD<0:7>
PD<0:7>
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
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.
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