NCT6627UD Nuvoton Technology Corporation of America, NCT6627UD Datasheet - Page 133

• Manufacturer Part Number: NCT6627UD
• Manufacturer: Nuvoton Technology Corporation of America

Specifications of NCT6627UD

• Lead Free Status / Rohs Status: Supplier Unconfirmed

11. PARALLEL PORT
11.1 Printer Interface Logic
The W83627UHG parallel port can be attached to devices that accept eight bits of parallel data at standard TTL
level. The W83627UHG supports the IBM XT/AT compatible parallel port (SPP), the bi-directional parallel port
(BPP), the Enhanced Parallel Port (EPP), and the Extended Capabilities Parallel Port (ECP).
The following tables show the pin definitions for different modes of the parallel port.
Notes:
n<name > : Active Low
1. Compatible Mode
2. High Speed Mode
3. For more information, refer to the IEEE 1284 standard.
11.2 Enhanced Parallel Port (EPP)
The following table lists the registers used in the EPP mode, and identifies the bit map of the parallel port and
EPP registers. Some registers are also used in other modes.
CONNECTOR
A2
HOST
0
0
0
0
0
1
1
2-9
10
11
12
13
14
15
16
17
1
A1
0
0
1
1
1
0
0
OF W83627UHG
PIN NUMBER
31-26, 24-23
36
22
21
19
18
35
34
33
32
Table 11-1 Pin Descriptions for SPP, EPP, and ECP Modes
A0
0
1
0
0
1
0
1
PIN ATTRIBUTE
Table 11-2 EPP Register Addresses
I/O
O
O
O
O
I
I
I
I
I
Printer control swapper (Read)
Printer status buffer (Read)
Printer control latch (Write)
EPP address port (R/W)
EPP data port 0 (R/W)
EPP data port 1 (R/W)
Data pot (R/W)
PD<7:0>
BUSY
nERR
nSLIN
nSTB
nACK
SLCT
nAFD
nINIT
SPP
REGISTER
PE
-124-
W83627UHG/NCT6627UD
PD<7:0>
nDStrb
nAStrb
nWrite
Select
nError
nWait
EPP
nInit
Intr
PE
Publication Release Date: October 26, 2010
nFault
Peerror, nAckReverse
nINIT
nSLIN
BUSY, PeriphAck
nACK, PeriphClk
nAFD, HostAck
nSTB, HostClk
SLCT, Xflag
1
1
, nPeriphRequest
, nReverseRqst
PD<7:0>
1
ECP
, ECPMode
NOTE
2
1
1
1
1
2
2
2
2
2
2
2
2
2
2
2
Revision 1.7