KSZ8851-16MLLJ_10 MICREL [Micrel Semiconductor], KSZ8851-16MLLJ_10 Datasheet - Page 25

• 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]

Clock Generator
The X1 and X2 pins are connected to a 25MHz crystal. X1 can also serve as the connector to a 3.3V, 25MHz oscillator
(as described in the pin description).
March 2010
Item
Micrel, Inc.
10
11
1
2
3
4
5
6
7
8
9
Notes:
1.
2.
Address Filtering Mode
Perfect
Inverse perfect
Hash only
Inverse hash only
Hash perfect
(Default)
Inverse hash
perfect
Promiscuous
Hash only with Multicast
address passed
Perfect with Multicast
address passed
Hash only with Physical
address passed
Perfect with Physical
address passed
Bit 0 (RX Enable), Bit 5 (RX Unicast Enable) and Bit 6 (RX Multicast Enable) must set to 1 in RXCR1 register.
The KSZ8851-16MLLJ will discard frame with SA same as the MAC address if bit[0] is set in RXCR2 register.
Receive Control Register (0x74 – 0x75): RXCR1
ALL
(Bit
RX
4)
0
0
0
0
0
0
1
1
1
1
1
Inverse
(Bit 1)
RX
Table 3. Address Filtering Scheme
0
1
0
1
0
1
1
0
0
0
0
Physical
Address
RX
1
1
0
0
1
1
0
0
1
1
0
Multicast
Address
25
RX
1
1
0
0
0
0
0
0
1
0
1
Description
All Rx frames are passed only if the DA exactly
matches the MAC address in MARL, MARM and
MARH registers.
All Rx frames are passed if the DA is not matching
the MAC address in MARL, MARM and MARH
registers.
All Rx frames with either multicast or physical
destination address are filtering against the MAC
address hash table.
All Rx frames with either multicast or physical
destination address are filtering not against the MAC
address hash table.
All Rx frames which are filtering out at item 3 (Hash
only) only are passed in this mode.
All Rx frames are passed with Physical address (DA)
matching the MAC address and to enable receive
multicast frames that pass the hash table when
Multicast address is matching the MAC address hash
table.
All Rx frames which are filtering out at item 5 (Hash
perfect) only are passed in this mode.
All Rx frames are passed without any conditions.
All Rx frames are passed with Physical address (DA)
matching the MAC address hash table and with
Multicast address without any conditions.
All Rx frames are passed with Physical address (DA)
matching the MAC address and with Multicast
address without any conditions.
All Rx frames are passed with Multicast address
matching the MAC address hash table and with
Physical address without any conditions.
All Rx frames are passed with Multicast address
matching the MAC address and with Physical address
without any conditions.
M9999-030210-1.0
KSZ8851-16MLLJ