FDC37C665IR SMSC Corporation, FDC37C665IR Datasheet - Page 101

• Manufacturer Part Number: FDC37C665IR
• Description: 3/5 Volt Advanced High-Performance Multi-Mode Parallel Port Super I/O Floppy Disk Controller with Infranred Support
• Manufacturer: SMSC Corporation

Register Definitions
The register definitions are based on the
standard IBM addresses for LPT.
standard printer ports are supported.
additional registers attach to an upper bit
decode of the standard LPT port definition to
Note 1: These addresses are added to the parallel port base address as selected by configuration
Note 2: All addresses are qualified with AEN. Refer to the AEN pin definition.
*Refer to ECR Register Description
data
ecpAFifo
dsr
dcr
cFifo
ecpDFifo
tFifo
cnfgA
cnfgB
ecr
NAME
register or jumpers.
MODE
000
001
010
011
100
101
110
111
SPP mode
PS/2 Parallel Port mde
Parallel Port Data FIFO mode
ECP Parallel Port mode
EPP mode (If this option is enabled in the configuration registers)
(Reserved)
Test mode
Configuration mode
ADDRESS (Note 1)
+000h R/W
+000h R/W
+001h R/W
+002h R/W
+400h R/W
+400h R/W
+400h R/W
+401h R/W
+402h R/W
+400h R
Table 41 - ECP Register Definitions
Table 42 - Mode Descriptions
All of the
The
DESCRIPTION*
101
ECP MODES
avoid conflict with standard ISA devices. The
port is equivalent to a generic parallel port
interface and may be operated in that mode.
The port registers vary depending on the mode
field in the ecr. The table below lists these
dependencies. Operation of the devices in
modes other that those specified is undefined.
000-001
011
010
011
110
111
111
All
All
All
Data Register
ECP FIFO (Address)
Status Register
Control Register
Parallel Port Data FIFO
ECP FIFO (DATA)
Test FIFO
Configuration Register A
Configuration Register B
Extended Control Register
FUNCTION