SLRC400 Datasheet, PDF (40/130 Pages) NXP Semiconductors – I·CODE Reader IC

Philips Semiconductors
I•CODE Reader IC
Product Specification Rev. 2.0 November 2001
SL RC400
5.2.4.5 RxThreshold Register
selects thresholds for the bit decoder.
Name: RxThreshold
Address: 0x1C
Reset value: 01101000, 0x68
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.
5.2.4.6 PreSet1D Register
Name: PreSet1D
Address: 0x1D
7
6
5
4
0
0
0
0
Access
r/w
r/w
r/w
r/w
Rights
Note: These values shall not be changed !
Reset value: 00000000, 0x00
3
2
1
0
0
0
0
0
r/w
r/w
r/w
r/w
40
Preliminary