W83627DHG-PT Nuvoton Technology Corporation of America, W83627DHG-PT Datasheet - Page 170

• Manufacturer Part Number: W83627DHG-PT
• Manufacturer: Nuvoton Technology Corporation of America

Specifications of W83627DHG-PT

• Pin Count: 128
• Lead Free Status / RoHS Status: Compliant

13.2 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 of the registers are used in other modes as well.
Notes:
1. These registers are available in all modes.
2. These registers are available only in EPP mode.
Control Swapper (Read)
Each register (or pair of registers, in some cases) is discussed below.
13.2.1 Data Port (Data Swapper)
The CPU reads the contents of the printer's data latch by reading the data port.
EPP Data Port 0 (R/W)
EPP Data Port 1 (R/W)
EPP Data Port 2 (R/W)
EPP Data Port 3 (R/W)
Control Latch (Write)
Status Buffer (Read)
EPP Address Port
Data Port (R/W)
A2
HOST CONNECTOR
0
0
0
0
0
1
1
1
1
REGISTER
(R/W)
17
A1
0
0
1
1
1
0
0
1
1
Table 13-3 Address and Bit Map for SPP and EPP Modes
BUSY#
PD7
PD7
PD7
PD7
PD7
PD7
7
1
1
A0
PIN NUMBER OF W83627DHG-P
0
1
0
0
1
0
1
0
1
ACK#
PD6
PD6
PD6
PD6
PD6
PD6
Table 13-2 EPP Register Addresses
6
1
1
PD5
PD5
PD5
PD5
PD5
PD5
DIR
PE
5
1
32
W83627DHG-P/W83627DHG-PT
IRQEN
SLCT
PD4
PD4
PD4
PD4
PD4
PD4
IRQ
4
-160-
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)
EPP data port 2 (R/W)
EPP data port 2 (R/W)
Data pot (R/W)
ERROR#
REGISTER
SLIN
SLIN
PD3
PD3
PD3
PD3
PD3
PD3
3
Publication Release Date: July 09, 2009
PIN ATTRIBUTE
INIT#
INIT#
PD2
PD2
PD2
PD2
PD2
PD2
2
1
O
AUTOFD#
AUTOFD#
PD1
PD1
PD1
PD1
PD1
PD1
1
1
Version 1.94
STROBE#
STROBE#
nSLIN
NOTE
TMOUT
SPP
PD0
PD0
PD0
PD0
PD0
PD0
1
1
1
1
2
2
2
2
2
0