參數(shù)資料
型號(hào): FDC37C666GT
廠商: STANDARD MICROSYSTEMS CORP
元件分類: 存儲(chǔ)控制器/管理單元
英文描述: High-Performance Multi-Mode Parallel Port Super I/O Floppy Disk Controllers
中文描述: 1 Mbps, IDE COMPATIBLE, FLOPPY DISK DRIVE CONTROLLER, PQFP100
封裝: QFP-100
文件頁(yè)數(shù): 119/152頁(yè)
文件大?。?/td> 621K
代理商: FDC37C666GT
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119
Table 46 - FDC37C665GT Configuration Registers
DB6
DB5
DB4
Default
DB7
DB3
DB2
DB1
DB0
3BH
CR0
VALID
OSC
FDC EN
FDC PWR
(RESERVED)
IDE AT/XT
IDE EN
9FH
CR1
LOCK CRx
COM3, 4 ADDR
IRQ POL
PP MODE
PP PWR
Parallel Port Address
DCH
CR2
UART2 PWR
UART2
EN
UART2 ADDRESS
UART1
PWR
UART1 EN
UART1 ADDRESS
78H
CR3
ADRx/
DRV2 EN/
PINTR
IDENT
MFM
DRIVE OPTIONS
PINTR
ENHANCED
FDC MODE
2
(RESERVED)
00H
CR4
(RESERVED)
EPP Type
MIDI 2
MIDI 1
Parallel Port FDC
PP EXT MODES
00H
CR5
(RESERVED)
EXTx4
DRV 0X1
DEN SEL
DMA MODE
IDE SEC
FDC SEC
FFH
CR6
Floppy Drive D
Floppy Drive C
Floppy Drive B
Floppy Drive A
00H
CR7
RESERVED
Media ID Polarity
Floppy Boot Drive
00H
CR8
ADR7
ADR6
ADR5
ADR4
ADR3
ADR2
ADR1
ADR0
00H
CR9
RESERVED
ADR10
ADR9
ADR8
00H
CRA
RESERVED
ECP FIFO THRESHOLD
TBD
CRB
RESERVED
TBD
CRC
RESERVED
66/65H
CRD
0
1
1
0
0
1
1/0
0/1
01H
CRE
0
0
0
0
0
0
1
0
00H
CRF
TEST MODES - RESERVED
FDC37C665GT
Description
Configuration
Register
The configuration registers consist of seventeen
registers, the Configuration Select Register and
Configuration Registers 0-F. The configuration
select register is written to by writing to port
3F0H. The Configuration Registers 0-F are
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
at
port
3F0H,
must
be
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. Refer to the
following descriptions for the function of each
configuration register.
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