FDC37C665IR SMSC Corporation, FDC37C665IR Datasheet - Page 90

• 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

The FDC37C665IR incorporates one IBM XT/AT
compatible parallel port.
supports the optional PS/2 type bi-directional
parallel port (SPP), the Enhanced Parallel Port
(EPP) and the Extended Capabilities Port (ECP)
parallel port modes. Refer to the FDC37C665IR
Configuration
information on disabling, power down, changing
the base address of the parallel port, and
selecting the mode of operation.
DATA PORT
STATUS PORT
CONTROL PORT
EPP ADDR PORT
The bit map of these registers is:
Note 1: These registers are available in all modes.
Note 2: These registers are only available in EPP mode.
Note 3 : For EPP mode, IOCHRDY must be connected to the ISA bus.
DATA PORT
STATUS
PORT
CONTROL
PORT
EPP ADDR
PORT
EPP DATA
PORT 0
EPP DATA
PORT 1
EPP DATA
PORT 2
EPP DATA
PORT 3
STROBE AUTOFD
TMOUT
Registers
PD0
PD0
PD0
PD0
PD0
PD0
D0
BASE ADDRESS + 00H
BASE ADDRESS + 01H
BASE ADDRESS + 02H
BASE ADDRESS + 03H
The FDC37C665IR
PD1
PD1
PD1
PD1
PD1
PD1
D1
0
description
nINIT
PD2
PD2
PD2
PD2
PD2
PD2
D2
0
PARALLEL PORT
for
nERR
PD3
SLC
PD3
PD3
PD3
PD3
PD3
D3
90
The FDC37C665IR also incorporates SMSC's
ChiProtect
damage to the parallel port due to printer power-
up.
The functionality of the Parallel Port is achieved
through the use of eight addressable ports,
with their associated registers and control
gating. The control and data port are read/write
by the CPU, the status port is read/write in the
EPP mode. The address map of the Parallel
Port is shown below:
EPP DATA PORT 0
EPP DATA PORT 1
EPP DATA PORT 2
EPP DATA PORT 3
SLCT
IRQE
PD4
PD4
PD4
PD4
PD4
PD4
D4
circuitry, which prevents possible
PCD
PD5
PD5
PD5
PD5
PD5
PD5
D5
PE
nACK
PD6
PD6
PD6
PD6
PD6
PD6
BASE ADDRESS + 04H
BASE ADDRESS + 05H
BASE ADDRESS + 06H
BASE ADDRESS + 07H
D6
0
nBUSY
PD7
AD7
PD7
PD7
PD7
PD7
D7
0
Note
2,3
2,3
2,3
2,3
2,3
1
1
1