34 / 51 page
TC9205M
Preliminary Data Sheet
10.3.5
Backpressure Time Value Register
Confidential.
34/51
July 30, 2003
Copyright © 2003, IC Plus Corp.
TC9205M-DS-R03
- Address: 31h, 30h
7 6 5 4 3 2 1 0
BPTimeValue
BPTimeValue
15 14 13 12 11 10 9 8
31h
30h
Bit(s)
Field
Description
15 – 0
BPTimeValue
Backpressure time value
BPTimeValue
A 16 bit value used to compute internal time value for backpressure operation.
Default value is ‘0000100000000000’(2048).
10.3.6
Flow Control Port Base Address Register
- Address: 32h, 33h, 34h, 35h, 36h, 37h
47 46 45 44 43 42 41 40
FCBaseAddress
FCBaseAddress
31 30 29 28 27 26 25 24
39 38 37 36 35 34 33 32
7 6 5 4 3 2 1 0
23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8
Bit(s)
Field
Description
47 – 0
FCBaseAddress
Source port base address for flow control packets
FCBaseAddress
Contains a 48 bit MAC address used to generate the individual port address used in
direct flow control addressing. The port addresses are obtained by incrementing
this base address and assigning the result to the TC9205M’s ports starting with port
0. The least significant 5 bits of this address will be ignored and replaced with ‘0’, so
these bits will encode the port number in the actual port address.
10.3.7
Reserved
- Address: 3Ch This register should be set to “0”.
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