DP83953VUL National Semiconductor, DP83953VUL Datasheet - Page 68

• Manufacturer Part Number: DP83953VUL
• Description: IC CTRLR RIC REPEATER 160-PQFP
• Manufacturer: National Semiconductor

Specifications of DP83953VUL

• Controller Type: Ethernet Repeater Interface Controller
• Interface: IEEE 802.3
• Voltage - Supply: 4.75 V ~ 5.25 V
• Current - Supply: 870mA
• 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: *DP83953VUL

7.0 RIC2A Registers
Port CAM Pointer Register (PCPR) (Pages 4H, 5H, 6H, 8H, 9H)
This register indicates which bytes of the six ethernet address bytes has been stored in the CAM locations. When a byte
has been loaded into the CAM location, the pointer increments. Thus, this register indicates which byte will get written on
the subsequent CAM location access. After the complete address is stored in any of the two CAMs, the user must set the
"address valid", ADV, bit so the address is not over-written mistakenly. When in learning mode, this register could be read
to see if an address has been learned.
Port CAM Register (Pages 5H, 6H, 8H, 9H)
This register accesses the 48 bits of the port CAM address. Six write/read cycles are required to load/read the entire
48 bit address.
D0
D1
D2
D3
D4
D5
D6
D7
D(7:0)
Bit
Bit
PCAMx_D7 PCAMx_D6 PCAMx_D5 PCAMx_D4 PCAMx_D3 PCAMx_D2 PCAMx_D1 PCAMx_D0
R
R
R
R/W
R
R
R
R/W
R/W
D7
R/W
R/W
ADV
D7
PTR0
PTR1
PTR2
ADV
PTR0
PTR1
PTR2
ADV
PCAMx _D(7:0)
D6
Symbol
Symbol
PTR2
(Continued)
D6
D5
D0 of the pointer for the port CAM location 1
D1 of the pointer for the port CAM location 1
D2 of the pointer for the port CAM location 1
ADdress Valid
0: Address is not valid in port CAM location 1
1: Address is valid in port CAM location 1
D0 of the pointer for the port CAM location 2
D1 of the pointer for the port CAM location 2
D2 of the pointer for the port CAM location 2
ADdress Valid
0: Address is not valid in port CAM location 2
1: Address is valid in port CAM location 2
This register accesses the Port CAM for the particular port. Note that x
represents the port number.
PTR1
D5
1st access:
2nd access:
3rd access:
4th access:
5th access:
6th access:
PTR0
D4
D4
68
ADV
D3
bits [7: 0] of the address,
bits [15: 8] of the address,
bits [23:16]of the address,
bits [31: 24] of the address,
bits [39: 32] of the address,
bits [47: 40] of the address.
D3
Description
Description
PTR2
D2
D2
PTR1
D1
D1
PTR0
D0
www.national.com
D0