CLRC632 Datasheet, PDF (47/163 Pages) NXP Semiconductors – Multiple Protocol Contactless Reader IC

Philips Semiconductors
Multiple Protocol Contactless Reader IC
5.2.4.5 RxThreshold Register
selects thresholds for the bit decoder.
Name: RxThreshold
Address: 0x1C
Product Specification Rev. 3.0; May 2003
CL RC632
Reset value: 11111111, 0xFF
7
6
5
4
3
2
1
0
MinLevel
CollLevel
Access
r/w
r/w
r/w
r/w
r/w
r/w
r/w
r/w
Rights
Description of the bits
Bit
Symbol
7-4
MinLevel
3-0
CollLevel
Function
Defines the minimum signal strength at the decoder input that shall be accepted.
If the signal strength is below this level, it is not evaluated.
Defines the minimum signal strength at the decoder input that has to be reached
by the weaker half-bit of the Manchester-coded signal to generate a bit-collision
relatively to the amplitude of the stronger half-bit.
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