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Rabbit 6000 User’s Manual
digi.com
303
Network Port B Frame Limit LSB Register
(NBFLLR)
(Address = 0x024A)
Bit(s)
Value
Description
7:0
LSB of maximum frame length.
Network Port B Frame Limit MSB Register
(NBFLMR)
(Address = 0x024B)
Bit(s)
Value
Description
7:0
MSB of maximum frame length. Default (and value specified by 802.3) is
0x0600.(1536), including preamble, address, length, and CRC fields.
Should not be less than 0x05EE (1518) for normal operation.
Network Port B MII Configuration Register
(NBMCFR)
(Address = 0x0250)
Bit(s)
Value
Description
7:5
These bits are ignored and will always return zeros when read.
4:2
000
MII Management Clock is system clock divided by 4.
001
This value is reserved and should not be used.
010
MII Management Clock is system clock divided by 6.
011
MII Management Clock is system clock divided by 8.
100
MII Management Clock is system clock divided by 10.
101
MII Management Clock is system clock divided by 20.
110
MII Management Clock is system clock divided by 40.
111
MII Management Clock is system clock divided by 80.
1
0
Enable MII frame preambles.
1
Disable MII frame preambles.
0
0
Disable MII scan function.
1
Enable MII scan function.
Summary of Contents for 6000
Page 1: ...Rabbit 6000 Microprocessor User s Manual 90001108_J...
Page 11: ...Rabbit 6000 User s Manual digi com 11 1 3 Block Diagram Figure 1 1 Rabbit 6000 Block Diagram...
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Page 234: ...Rabbit 6000 User s Manual digi com 234 Figure 22 3 Sample Slow A D Converter Circuit...
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Page 420: ...Rabbit 6000 User s Manual digi com 420 Figure 37 1 Memory Read and Write Cycles...