xr16c872iq Exar Corporation, xr16c872iq Datasheet - Page 40

• Manufacturer Part Number: xr16c872iq
• Description: Dual Uart With 1284 Parallel Port And Plug-and-play Controller
• Manufacturer: Exar Corporation

XR16C872
1284 CONTROLLER REGISTERS
A10 A2 A1 A0
0
0
0
0
0
0
0
0
1
1
1
Rev. 1.00
0 0 0
0 0 1
0 1 0
0 1 1
1 0 0
1 0 1
1 1 0
1 1 1
X 0 0
X 0 1
X 1 0
REGISTER
ECP-AFIFO
EPP-DPort
EPP-DPort
EPP-DPort
EPP-DPort
EPP-APort
CONF-A
CONF-B
DSR
DCR
ECR
Data
INT type
PDC-7
PDD-7
PDA-7
PDB-7
MODE
BUSY
Sel-2
AP-7
ECP
PD7
RLE
D7
0
DESCRIPTION
PDB-6
PDC-6
PDD-6
MODE
PDA-6
ACKE
Sel-1
AP-6
input
PD6
IRQ
D6
0
0
DISCONTINUED
PDB-5
PDC-5
PDD-5
MODE
PDA-5
Sel-0
AP-5
Sel-2
PD5
IRQ
DIR
PE
D5
0
40
SELECT
PDC-4
PDD-4
FAULT
enable
PDA-4
PDB-4
enable
Sel-1
AP-4
PD4
IRQ
INT
D4
1
SELCTIN#
Visit Exar Web Site at www.exar.com
PDA-3
PDB-3
PDC-3
PDD-3
En/Dis
ERR#
Sel-0
AP-3
DMA
PD3
IRQ
D3
0
Service
FIFO-F
PDB-2
PDC-2
PDD-2
PDA-2
Sel-2
INIT#
AP-2
DMA
PD2
INT
D2
1
AUTOFD# STROBE#
PDC-1
PDD-1
PDA-1
PDB-1
Sel-1
FIFO
AP-1
DMA
PD1
D1
full
0
1
PDC-0
PDD-0
PDA-0
PDB-0
empty
Sel-0
FIFO
AP-0
DMA
PD0
D0
0
1