W83627UHG Nuvoton Technology Corporation of America, W83627UHG Datasheet - Page 129

• Manufacturer Part Number: W83627UHG
• Description: IC I/O CONTROLLER 128-QFP
• Manufacturer: Nuvoton Technology Corporation of America

Specifications of W83627UHG

• Applications: PC's, PDA's
• Interface: LPC
• Voltage - Supply: 3.3V, 5V
• Package / Case: 128-XFQFN
• Mounting Type: Surface Mount
• Pin Count: 128
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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
2-9
10
11
12
13
14
15
16
17
1
A1
0
0
1
1
1
OF W83627UHG
PIN NUMBER
Table 11-1 Pin Descriptions for SPP, EPP, and ECP Modes
31-26, 24-23
36
22
21
19
18
35
34
33
32
A0
0
1
0
0
1
Table 11-2 EPP Register Addresses
PIN ATTRIBUTE
I/O
O
O
O
O
I
I
I
I
I
Printer control swapper (Read)
-118-
Printer status buffer (Read)
Printer control latch (Write)
EPP address port (R/W)
Data pot (R/W)
PD<7:0>
nSLIN
nACK
BUSY
nERR
SLCT
SPP
Nstb
Nafd
Ninit
REGISTER
PE
PD<7:0>
nDStrb
nAStrb
nWrite
nError
Select
nWait
EPP
nInit
Intr
PE
W83627UHG
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