AMIS-53050 Datasheet, PDF (87/107 Pages) AMI SEMICONDUCTOR – Frequency Agile Transceiver

AMIS-53050 Frequency Agile Transceiver
Data Sheet
7.1.9. CRC Polynomial
This register allows a designer to change the CRC polynomial used in the AMIS-53050. The register represents the presence of the
powers in the CRC equation. For example:
The polynomial x8+x5+x2+x+1 is encoded by assuming the polynomial will always have a high order bit.
So the binary representation is: 1 0010 0111
This is set as the value 0X27 (HEX) in the register
(See “Koopman, P. & Chakravarty, T., “ Ccylic Redundancy Code (CRC) Polynomial Selection For Embedded Networks” DSN04, June
2004.” for more information.)
Table 93: CRC Poly - 0X30 [48]
Bit Name
Comment
7:0 _{CRC_POLY [7:0]}
CRC polynomial value
7.1.10. Default Length of Packet
This register allows a default value for the LOP (register value plus 1 byte) such that the AMIS-53050 does not have to send the LOP
with a buffered packet.
Table 94: Default LOP - 0X31 [49]
Bit Name
Comment
7:0 _{DEFAULT_LOP [7:0]} Default value for the length of packet to be used in buffered TX/RX
7.1.11. Broadcast ID 1
Many applications in the wireless market make use of a broadcast function where the Master note in a system can transmit to all
wireless nodes in the network without addressing each node individually, but still not broadcasting to nodes in another network.
Table 95: Broadcast ID1 - 0X3A [58]
Bit Name
Comment
7:0 _{Global_ID1 [7:0]}
Lower byte of the global address
7.1.12. Broadcast ID 0
Table 96: Broadcast ID0 - 0X3B [59]
Bit Name
Comment
7:0 _{Global_ID0 [7:0]}
Upper byte of the global address
AMI Semiconductor – Jan. 07, M-20639-002
87
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