mt90502ag2 Zarlink Semiconductor, mt90502ag2 Datasheet - Page 102

• Manufacturer Part Number: mt90502ag2
• Description: Multi-channel Aal2 Sar
• Manufacturer: Zarlink Semiconductor

Note 1: In all examples a 5-byte payload was used. Any payload from 1-to 64-bytes could have been used.
Note 2: CRC-16 Polynomial:
being sent.
Note 3: the CID/LI/UUI/HEC AAL2 header byte triplet can be used in conjunction with all HDLC encapsulation formats from no
HDLC header/no HDLC CRC to the full 3-byte of HDLC header and 2-bytes of CRC.
0 Byte He ade r &
No CRC:
1 Byte Hea der &
No CRC:
2 Byte Hea der &
No CRC:
0 Byte He ade r &
2 Byte CRC:
1 Byte He ade r &
2 Byte CRC:
2 Byte Hea der &
2 Byte CRC:
1 Byte Hea der &
Contro l & No CRC:
2 Byte He ade r &
Contro l & No CRC:
1 Byte He ade r &
Contro l & 2 Byte CRC:
2 Byte He ade r &
Contro l & 2 Byte CRC:
2 Byte He ade r &
Contro l & 2 Byte CRC
with AAL2 Hea der :
Note 1: In all examples a 5 byte payloa d was u se d. An y pa ylo ad from 1 to 6 4 byte s could h ave bee n used.
Note 2: CRC16 Po lyn omia l : x16 +x12 +x5+1. At reset, the in itia l valu e of CRC is FFFFh and CRC is XORedwith F0 B8h be fo re be ing sent.
Note 3 : Th e CID/LI/UUI/HEC AAL2 h ead er byte tr iplet ca n be used in co njuction with all HDL C en ca pculation fo rma ts fr om no HDLC hea der /n o
HDLC CRC to th e fu ll 3 byte o f HDLC h ead er an d 2 byte s of CRC.
FLAG
FLAG
FLAG
FLAG
FLAG
FLAG
FLAG
FLAG
FLAG
FLAG
FLAG
Supporte d HDLC Pa cke t Forma t (af te r ze ro e xt ract ion)
x
16+
D0
H0
H0
D0
H0
H0
H0
H0
H0
H0
H0
x
12+
x
Cntrl
Cntrl
5+1. At reset, the initial value of CRC is FFFFh and CRC is X0Redwith FOB8h before
D1
D0
H1
D1
D0
H1
H1
H1
H1
Figure 64 - Supported HDLC Formats
Cntrl
Cntrl
Cntrl
D2
D1
D0
D2
D1
D0
D0
D0
Zarlink Semiconductor Inc.
CID
D3
D2
D1
D3
D2
D1
D1
D0
D1
D0
MT90502
LI/UUI UUI/HC
D4
D3
D2
D4
D3
D2
D2
D1
D2
D1
102
FLAG
CRC0
D4
D3
D4
D3
D3
D2
D3
D2
FLAG
CRC1
CRC0
D4
D4
D4
D3
D4
D3
D0
FLAG
FLAG
CRC1
CRC0
FLAG
CRC0
D4
D4
D1
FLAG
CRC1
FLAG
CRC1
CRC0
D2
FLAG
FLAG
CRC1
D3
FLAG
D4
CRC0
hd lc1 .cdd
CRC1
Data Sheet
FLAG