DP83907VF National Semiconductor, DP83907VF Datasheet - Page 25

• Manufacturer Part Number: DP83907VF
• Description: IC CONTROLLR AT/LANII TP 160PQFP
• Manufacturer: National Semiconductor

Specifications of DP83907VF

• Controller Type: Network Interface Controller (NIC)
• Interface: Twisted Pair
• Voltage - Supply: 4.75 V ~ 5.25 V
• Current - Supply: 150mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 160-MQFP, 160-PQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: *DP83907VF

0–3
Bit
5 0 Register Descriptions
HARDWARE CONFIGURATION REGISTER C
This register is configured during a RESET and can be accessed by 3rd consecutive read config register A
4
5
6
7
BPS0–3
Symbol
SOFEN
RES
RES
RES
BOOT PROM SELECT Selects address at which boot PROM begins and the size When the system reads
within the selected memory area DP83907 reads the data in through MSD0– 7 and drives it onto the system
data bus The following are valid addresses and sizes
Bit 3
RESERVED This bit must be set low for normal operation
RESERVED This bit must be set high for normal operation
RESERVED This bit must be set low for normal operation
SOFTWARE ENABLE If this bit is set low then the user can program configuration registers A and B in
software If this bit is set high then the configuration registers are not accessible If EECONFIG is high the
configuration from the switches will be overwritten by the configuration from the EEPROM even if this bit is
pulled high
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
SOFEN
Bit 2
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
7
Bit 1
RES
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
6
(Continued)
Bit 0
RES
X
0
1
0
1
0
1
0
1
0
1
0
1
0
1
5
Address
0CC00H
0DC00H
0C000H
0C400H
0C800H
0D000H
0D400H
0D800H
0C000H
0C800H
0D000H
0D800H
0C000H
0D000H
RES
4
X
25
BPS3
3
No Boot PROM
Function
Size
32K
32K
32K
32K
64K
64K
BPS2
8K
8K
8K
8K
8K
8K
8K
8K
2
BPS1
1
BPS0
0