FDC37N769_07 SMSC [SMSC Corporation], FDC37N769_07 Datasheet - Page 97

• Manufacturer Part Number: FDC37N769_07
• Description: 3.3V Super I/O Controller with Infrared Support for Portable Applications
• Manufacturer: SMSC [SMSC Corporation]

Configuration Select Register (CSR)
The Configuration Select Register can only be accessed when the FDC37N769 is in the configuration state. The
CSR is located at the INDEX PORT address and must be initialized with configuration register index before the
register can be accessed using the DATA PORT.
Configuration Registers Description
The configuration registers are set to their default values at power up (Table 75) and are not affected by RESET,
except where noted in the register descriptions that follow.
SMSC DS – FDC37N769
DEFAULT INDEX
Revision
9CH
3CH
28H
88H
70H
00H
00H
FFH
00H
00H
00H
00H
00H
02H
28H
00H
00H
80H
00H
03H
00H
80H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
00H
-
-
-
CR12 -
CR18 -
CR21-
CR0A
CR0B
CR0C
CR0D
CR0E
CR1D
CR1E
CR2A
CR2B
CR00
CR01
CR02
CR03
CR04
CR05
CR06
CR07
CR08
CR09
CR0F
CR10
CR11
CR13
CR14
CR15
CR16
CR17
CR1F
CR20
CR22
CR23
CR24
CR25
CR26
CR27
CR28
CR29
Lock CRx
Reserved
Reserved
IR Output MUX
UART 2
ADRA7
Test 15
Test 23
UART2
ADRX/
DRV2/
IRQ_B
ADRx Config Cntrl
Speed
Test 7
PWR
Valid
DB7
FDD3-DRTx
FDD3-DTx
FDD3 - ID
Auto Power Management
Reserved
EPP Type
UART 1
ARDA6
Test 14
Test 22
IDENT
EXTx4
Speed
Test 6
DB6
Serial 1 IRQ
FDC DRQ
FDC IRQ
Table 75 - Configuration Registers
DATASHEET
Reserved
Reserved
Reserved
DRV 0X1
ADRA5
Test 13
Test 21
GAMECS - ADR[9:4]
MIDI 2
Test 5
MFM
DB5
FDD2-DRTx
FDC - ADR[9:4]
FDD2-DTx
FDD2 - ID
Serial Port 1 - ADR[9:3]
Serial Port 2 - ADR[9:3]
Page 97 of 137
Reserved
Floppy Data Rate Select Shadow
UART 2 Mode
HPMODE
UART1 FIFO Control Shadow
UART2 FIFO Control Shadow
Reserved
FIR Base I/O ADDR[10:3]
Force FDD Status Change
ADRA4
Test 12
Test 20
DEN 1
MIDI 1
Test 4
Parallel Port - ADR[9:2]
DB4
DRV
Device Revision
DEN SEL
Device ID
Reserved
Reserved
Reserved
Reserved
FDC PWR
PP MODE
Reserved
Test 11
Test 19
UART1
Test 3
PWR
DB3
0
Parallel Port FDC
FDD1-DRTx
FDD1-DTx
FDD1 - ID
Reserved
FDC DMA
Reserved
PP PWR
ADRA10
UART 2
Test 10
Test 18
ECP FIFO Threshold
Duplex
ADRX/
DRV2/
IRQ_B
Test 2
Mode
DB2
Parallel Port DRQ
Parallel Port IRQ
0
Serial 2 IRQ
IRQIN IRQ
Reserved
FDC Mode
Enhanced
Test 17
UART 2
ADRA9
Polarity
Test 1
Test 9
XMIT
DB1
Floppy Boot Drive
FDC Output Type
GAMECS Config
2
PP Ext. Modes
0
0
FDD0-DRTx
FDD0-DTx
FDD0 - ID
Reserved
Reserved
Control
GAMECS
PWRGD/
UART 2
ADRA8
Test 16
Polarity
Test 0
Test 8
RCV
DB0
0
0
0
0
Rev. 02-16-07