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SLRC400 Datasheet(PDF) 45 Page - NXP Semiconductors

Part # SLRC400
Description  I쨌CODE Reader IC
PDF  130 Pages
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Manufacturer  PHILIPS [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

SLRC400 Datasheet(HTML) 45 Page - NXP Semiconductors

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Philips Semiconductors
Product Specification Rev. 2.0 November 2001
I
•CODE Reader IC
SL RC400
45
Preliminary
5.2.5.4
CRCPresetLSB Register
LSB of the preset value for the CRC register.
Name: CRCPresetLSB
Address: 0x23
Reset value: 11111110, 0xFE
7
6
5
4
3
2
1
0
CRCPresetLSB
Access
Rights
r/w
r/w
r/w
r/w
r/w
r/w
r/w
r/w
Description of the bits
Bit
Symbol
Function
7-0
CRCPresetLSB
CRCPresetLSB defines the starting value for CRC-calculation. This value is
loaded into the CRC at the beginning of transmission, reception and the CalcCRC
Command, if the CRC calculation is enabled.
The Preset value is set for I?CODE1
To use the ISO 15693 functionality the CRCPresetLSB Register has to be set to
0xFF.
5.2.5.5
CRCPresetMSB Register
MSB of the preset value for the CRC register.
Name: CRCPresetMSB
Address: 0x24
Reset value: 11111111, 0xFF
7
6
5
4
3
2
1
0
CRCPresetMSB
Access
Rights
r/w
r/w
r/w
r/w
r/w
r/w
r/w
r/w
Description of the bits
Bit
Symbol
Function
7-0
CRCPresetMSB
CRCPresetMSB defines the starting value for CRC-calculation. This value is
loaded into the CRC at the beginning of transmission, reception and the CalcCRC
Command, if the CRC calculation is enabled.
Note: The Preset value of CRCPresetMSB Register is the same for I?CODE1 and
ISO 15693.
Note: This register is not relevant, if CRC8 is 1.



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