AN983BLX-BG-T-V1 Infineon Technologies, AN983BLX-BG-T-V1 Datasheet - Page 82

• Manufacturer Part Number: AN983BLX-BG-T-V1
• Description: IC PCI TO ETHERNET LAN 128-FQFP
• Manufacturer: Infineon Technologies

Specifications of AN983BLX-BG-T-V1

• Applications: Ethernet Controller
• Interface: USB
• Voltage - Supply: 3 V ~ 3.6 V
• Package / Case: 128-BFQFP
• Mounting Type: Surface Mount
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: AN983BLXBGTV1; SP000076446

Multicast Address Register 1
MAR1_CSR28
Multicast Address Register 1
Field
MAB7
MAB6
MAB5
MAB4
MAR0 and MAR1 are readable, but can be written only if the receive state is in stopped (CSR5 bit19-17 = 000).
Multicast 64 Algorithm
AN983B/BX uses CRC [5:0] to hit one of the 64 entries in UMAR1 [31:0] and MAR0[31:0] by generated CRC32
from Ethernet DA (destination address).
The most significant bit CRC [5] chooses the upper or lower double word, (MAR1 or MAR0), the lower 5 bit
presents for the corresponding bit inside the double word.
Example 1:
If CRC [5] = 1'b0 --> hit MAR0
CRC [4:0] = 5'b00010 --> hit MAR0 [2]
Example 2:
CRC [5] = 1'b1 --> hit MAR1
CRC [4:0] = 5'b00100 --> hit MAR1 [4]
Data Sheet
Bits
31:24
23:16
15:8
7:0
Type
rw
rw
rw
rw
Description
Multicast Address Byte 7 (hash table 63:56)
Multicast Address Byte 6 (hash table 55:48)
Multicast Address Byte 5 (hash table 47:40)
Multicast Address Byte 4 (hash table 39:32)
Registers and Descriptors DescriptionPCI Control/Status Registers
Offset
B0
82
H
Rev. 1.81, 2005-12-15
AN983B/BX
Reset Value
0000 0000
H