W83877ATG Nuvoton Technology Corporation of America, W83877ATG Datasheet - Page 87

• Manufacturer Part Number: W83877ATG
• Manufacturer: Nuvoton Technology Corporation of America

Specifications of W83877ATG

• Lead Free Status / RoHS Status: Supplier Unconfirmed

7. PARALLEL PORT
7.1
The parallel port of the W83877ATF/ATG makes possible the attachment of various devices that
accept eight bits of parallel data at standard TTL level. The W83877ATF/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), 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 Connnector and Pin Definition for SPP/EPP/ECP Modes
Notes:
n<name > : Active Low
1. Compatible Mode
2. High Speed Mode
3. For more information, refer to the IEEE 1284 standard.
CONNECTOR
HOST
2-9
Printer Interface Logic
10
11
12
13
14
15
16
17
1
OF W83877ATF
PIN NUMBER
9-14,16-17
19
26
24
27
28
20
29
21
22
ATTRIBUTE
PIN
I/O
O
O
O
O
I
I
I
I
I
- 80 -
PD<0:7>
BUSY
nSLIN
nACK
nERR
SLCT
nAFD
nSTB
nINIT
SPP
PE
W83877ATF/W83877ATG
PD<0:7>
nDStrb
nAStrb
nWrite
Select
nError
nWait
EPP
nInit
Intr
PE
nSTB, HostClk
PD<0:7>
nACK, PeriphClk
BUSY, PeriphAck 2
PEerror, nAckReverse 2
SLCT, Xflag
nAFD, HostAck 2
nFault 1 ,
nPeriphRequest 2
nINIT 1 , nReverseRqst 2
nSLIN 1 , ECPMode 2
ECP