KSZ8851-16MLLJ_10 MICREL [Micrel Semiconductor], KSZ8851-16MLLJ_10 Datasheet - Page 66
KSZ8851-16MLLJ_10
Manufacturer Part Number
KSZ8851-16MLLJ_10
Description
Single-Port Ethernet MAC Controller with 8-Bit or 16-Bit Non-PCI Interface
Manufacturer
MICREL [Micrel Semiconductor]
Datasheet
1.KSZ8851-16MLLJ_10.pdf
(90 pages)
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MAC Address Hash Table Register 0 (0xA0 – 0xA1): MAHTR0
The 64-bit MAC address table is used for group address filtering and it is enabled by selecting item 5 “Hash perfect” mode
in Table 3 (Address Filtering Scheme). This value is defined as the six most significant bits from CRC circuit calculation
result that is based on 48-bit of DA input. The two most significant bits select one of the four registers to be used, while
the others determine which bit within the register.
Multicast table register 0.
MAC Address Hash Table Register 1 (0xA2 – 0xA3): MAHTR1
Multicast table register 1.
MAC Address Hash Table Register 2 (0xA4 – 0xA5): MAHTR2
Multicast table register 2.
MAC Address Hash Table Register 3 (0xA6 – 0xA7): MAHTR3
Multicast table register 3.
0xA8 – 0xAF: Reserved
March 2010
Micrel, Inc.
Bit
15-0
Bit
15-0
Bit
15-0
Bit
15-0
Default Value
0x0
Default Value
0x0
Default Value
0x0
Default Value
0x0
R/W
RW
R/W
RW
R/W
RW
R/W
RW
Description
HT0 Hash Table 0
When the appropriate bit is set, if the packet received with DA matches the CRC, the
hashing function is received without being filtered.
When the appropriate bit is cleared, the packet will drop.
Description
HT1 Hash Table 1
When the appropriate bit is set, if the packet received with DA matches the CRC, the
hashing function is received without being filtered.
When the appropriate bit is cleared, the packet will drop.
Note: When the receive all (RXAE) or receive multicast (RXME) bit is set in the RXCR1, all
multicast addresses are received regardless of the multicast table value.
Description
HT2 Hash Table 2
When the appropriate bit is set, if the packet received with DA matches the CRC, the
hashing function is received without being filtered.
When the appropriate bit is cleared, the packet will drop.
Note: When the receive all (RXAE) or receive multicast (RXME) bit is set in the RXCR1, all
multicast addresses are received regardless of the multicast table value.
Description
HT3 Hash Table 3
When the appropriate bit is set, if the packet received with DA matches the CRC, the
hashing function is received without being filtered.
When the appropriate bit is cleared, the packet will drop.
Note: When the receive all (RXAE) or receive multicast (RXME) bit is set in the RXCR1, all
multicast addresses are received regardless of the multicast table value.
66
M9999-030210-1.0
KSZ8851-16MLLJ
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