FDC37C665GT-MS SMSC, FDC37C665GT-MS Datasheet - Page 119

• Manufacturer Part Number: FDC37C665GT-MS
• Description: IC CTRLR SUPER I/O MULTI 100-QFP
• Manufacturer: SMSC

Specifications of FDC37C665GT-MS

• Controller Type: I/O Controller
• Interface: ISA Host
• Voltage - Supply: 4.5 V ~ 5.5 V
• Current - Supply: 35mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 100-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 638-1007

FDC37C665GT
Description
The configuration registers consist of seventeen
Configuration Registers 0-F. The configuration
select register is written to by writing to port
3F0H.
accessed by reading or writing to port 3F1H.
Configuration Select Register (CSR)
This register can only be accessed when the
FDC is in the Configuration Mode. This register,
located
registers, the Configuration Select Register and
Default
66/65H
DCH
FFH
TBD
TBD
3BH
9FH
78H
00H
00H
00H
00H
00H
00H
01H
00H
The Configuration Registers 0-F are
CRC
CRD
CRA
CRB
CRE
CRF
CR0
CR1
CR2
CR3
CR4
CR5
CR6
CR7
CR8
CR9
at
(RESERVED)
(RESERVED)
UART2 PWR
LOCK CRx
DRV2 EN/
PINTR
VALID
ADRx/
ADR7
Configuration
port
DB7
Floppy Drive D
0
0
Table 46 - FDC37C665GT Configuration Registers
3F0H,
EPP Type
UART2
IDENT
EXTx4
ADR6
RESERVED
RESERVED
DB6
COM3, 4 ADDR
EN
1
0
OSC
RESERVED
must
DRV 0X1
Register
MIDI 2
UART2 ADDRESS
ADR5
MFM
DB5
Floppy Drive C
1
0
be
IRQ POL
FDC EN
TEST MODES - RESERVED
MIDI 1
119
ADR4
DB4
DRIVE OPTIONS
0
0
DEN SEL
initialized upon entering the Configuration Mode
before the configuration registers (CR0-CRF)
can be accessed and is used to select which of
the Configuration Registers are to be accessed
at port 3F1H.
Configuration Registers 0-F
These registers are set to their default values at
power up and are not affected by RESET. They
are accessed at port 3F1H.
following descriptions for the function of each
configuration register.
RESERVED
RESERVED
FDC PWR
PP MODE
UART1
ADR3
PWR
DB3
0
0
Parallel Port FDC
Media ID Polarity
Floppy Drive B
(RESERVED)
DMA MODE
UART1 EN
ECP FIFO THRESHOLD
PP PWR
ADR10
PINTR
ADR2
DB2
1
0
ENHANCED
FDC MODE
IDE AT/XT
IDE SEC
ADR1
ADR9
Parallel Port Address
DB1
UART1 ADDRESS
1/0
Floppy Boot Drive
2
1
PP EXT MODES
Floppy Drive A
Refer to the
(RESERVED)
FDC SEC
IDE EN
ADR0
ADR8
DB0
0/1
0