20-668-0024 Rabbit Semiconductor, 20-668-0024 Datasheet - Page 218

• Manufacturer Part Number: 20-668-0024
• Description: IC CPU RABBIT4000 128-LQFP
• Manufacturer: Rabbit Semiconductor

Specifications of 20-668-0024

• Processor Type: Rabbit 4000 8-bit
• Speed: 60MHz
• Voltage: 2.5V, 2.7V, 3V, 3.3V
• Mounting Type: Surface Mount
• Package / Case: 128-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Other names: 20-668-0022; 316-1078

20.3.5 Multicast Addressing
A physical address match requires that the received frame address is a physical address
that matches every bit of the programmed receive address. A broadcast address match
requires that all 48 bits of the received frame address be “ones.” A multicast address
match requires the received frame address to be a multicast address (LSB of the address is
one) and a match in the multicast address filter. The multicast address filter uses the six
most significant bits of the CRC calculated on the receive address as an index into a 64-
by-1 bit table written under program control. A one in the corresponding table entry con-
stitutes a multicast address match as far as the network port is concerned. A table of one
set of unique multicast addresses corresponding to each filter bit is shown below. The
table shows the least significant byte of the multicast address; the remaining five bytes of
the address are all zeros for this set of multicast addresses.
208
NAMF7R
NAMF6R
NAMF5R
NAMF4R
NAMF3R
NAMF2R
NAMF1R
NAMF0R
Register
Bit 7
0xD9
0xCF
0x5F
0x17
0x01
0x91
0x87
0x49
0x0B
0xC5
0xD3
0x1D
0x8D
0x9B
Bit 6
0x43
0x55
0xDD
0xCB
0x4D
Bit 5
0x5B
0x05
0x13
0x83
0x95
0xD7
Bit 4
0xC1
0x19
0x0F
0x51
0x9F
0x89
0x47
Rabbit 4000 Microprocessor User’s Manual
0xCD
0xDB
0x5D
Bit 3
0x4B
0x85
0x93
0x03
0x15
0xD1
Bit 2
0xC7
0x99
0x57
0x41
0x8F
0x1F
0x09
0xDF
Bit 1
0xC9
0x4F
0x97
0x59
0x81
0x11
0x07
Bit 0
0x8B
0x9D
0xC3
0x0D
0x1B
0xD5
0x45
0x53