DP83820BVUW National Semiconductor, DP83820BVUW Datasheet - Page 62

• Manufacturer Part Number: DP83820BVUW
• Description: IC INTERFACE CONTROLLER 208-PQFP
• Manufacturer: National Semiconductor

Specifications of DP83820BVUW

• Controller Type: Ethernet Controller, MAC/BIU
• Interface: IEEE 802.3
• Voltage - Supply: 3.3V
• Current - Supply: 150mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 208-MQFP, 208-PQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: *DP83820BVUW

4.0 Register Set
4.2.23 Boot ROM Address Register
The BRAR is used to setup the address for an access to an external ROM/FLASH device.
4.2.24 Boot ROM Data Register
The BRDR is used to read and write ROM/FLASH data from the data from/to an external ROM/FLASH device.
4.2.25 Silicon Revision Register
30-16
31-16
15-0
31-0
15-0
bit
bit
bit
31
AUTOINC
ADDR
DATA
REV
tag
tag
tag
Offset: 0050h
Offset: 0054h
Offset: 0058h
(Continued)
Tag: BRAR
Tag: BRDR
Tag: SRR
Auto-Increment
Boot ROM Address
Boot ROM Data
Revision Level
description
description
description
Access: Read Write
Access: Read Write
Access: Read Only
When set, the contents of ADDR will auto increment with every 32-bit
access to the BRDR register.
unused
16-bit address used to access the external Boot ROM.
Access port to external Boot ROM. Software can use BRAR and BRDR to
read (and write if FLASH memory is used) the external Boot ROM. All
accesses must be 32-bits wide and aligned on 32-bit boundaries.
unused (reads return 0)
Silicon Revision for the DP83820.
Rev B 0103h
Size: 32 bits
Size: 32 bits
Size: 32 bits
62
usage
usage
usage
Hard Reset: FFFFFFFFh
Hard Reset: undefined
Hard Reset: as defined
Soft Reset: FFFFFFFFh
Soft Reset: undefined
Soft Reset: unchanged
www.national.com