cx28560 Mindspeed Technologies, cx28560 Datasheet - Page 232
cx28560
Manufacturer Part Number
cx28560
Description
Hdlc Controller
Manufacturer
Mindspeed Technologies
Datasheet
1.CX28560.pdf
(274 pages)
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Flow Conductor Interface
Figure C-1. Data and Command Storage in Internal Buffer
C-2
fragment length % 4 = 1
fragment length % 4 = 2
fragment length % 4 = 3
fragment length % 4 = 4
If the length of the payload in a fragment is FRAGLEN, the number of 4 bytes a
fragment occupies can be calculated as follows:
If the fragment is not the last fragment in a packet, it will occupy (FRAGLEN / 4) 4
bytes in the internal buffer.
If the fragment is the last fragment in a packet, the number of 4 bytes it will occupy is
as follows:
In case FRAGLEN % 4 = 1, num_4bytes = (FRAGLEN + 3) / 4;
In case FRAGLEN % 4 = 2, num_4bytes = (FRAGLEN + 2) / 4;
In case FRAGLEN % 4 = 3, num_4bytes = (FRAGLEN + 5) / 4;
In case FRAGLEN % 4 = 4, num_4bytes = (FRAGLEN + 4) / 4;
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CX28560 Data Sheet
28560-DSH-001-B
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