參數(shù)資料
型號(hào): HTMS1301FUG
廠商: NXP Semiconductors N.V.
元件分類: 通信及網(wǎng)絡(luò)
英文描述: ISO 18000 transponder IC
封裝: HTMS1301FTB/AF<sot1122 (XSON3)|<<http://www.nxp.com/packages/sot1122.html<1<Always Pb-free,;HTMS1301FUG/AM<Uncased die|<<<1<Always Pb-free,;HTMS8301FTB/AF<sot1122
文件頁(yè)數(shù): 32/44頁(yè)
文件大小: 719K
代理商: HTMS1301FUG
184430
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NXP B.V. 2010. All rights reserved.
Product data sheet
PUBLIC
Rev. 3.0 — 18 March 2010
184430
32 of 44
NXP Semiconductors
HITAG μ
ISO 18000 transponder IC
15. Data integrity/calculation of CRC
The following explanations show the features of the HITAG μ protocol to protect read and
write access to transponders from undetected errors. The CRC is an 16-bit CRC
according to ISO 11784/11785.
15.1 Data transmission: RWD to HITAG μ ISO 18000 transponder IC
Data stream transmitted by the RWD to the HITAG μ ISO 18000 transponder may include
an optional 16-bit Cyclic Redundancy Check (CRC-16).
The data stream is first verified for data errors by the HITAG μ ISO 18000 transponder IC
and then executed.
The generator polynomial for the CRC-16 is:
u
16
+ u
12
+ u
5
+ 1 = 1021h
The CRC pre set value is: 0000h
15.2 Data transmission: HITAG μ ISO 18000 transponder IC to RWD
The HITAG μ ISO 18000 transponder IC calculates the CRC on all received bits of the
request. Whether the HITAG μ ISO 18000 transponder IC calculated CRC is appended to
the response depends on the setting of the CRCT flag.
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