mfrc500 NXP Semiconductors, mfrc500 Datasheet - Page 43

• Manufacturer Part Number: mfrc500
• Description: Highly Integrated Iso14443a Reader Ic
• Manufacturer: NXP Semiconductors

Philips Semiconductors
Highly Integrated ISO 14443A Reader IC
5.2.4.7
controls decoder behaviour and defines the input source for the receiver.
Name:RxControl2
Description of the bits
5-2
1-0
Bit
Access
Rights
7
6
DecoderSource
RxControl2 Register
RcvClkSelI
RxAutoPD
Symbol
RcvClkSelI
0000
r/w
7
If set to 1, the I-clock is used for the receiver clock.
0 indicates, the Q-clock is used. I-clock and Q-clock are 90° phase shifted to each
other
If set to 1, the receiver circuit is automatically switched on before receiving and
switched off afterwards. This may be used to reduce current consumption.
If set to 0, the receiver is always activated.
These values shall not be changed
Selects the source for the decoder input:
00:
01:
10:
11:
RxAutoPD
r/w
6
Low
Internal Demodulator
A subcarrier modulated Manchester coded signal at Pin MFIN
A baseband Manchester coded signal at Pin MFIN
Address: 0x1E
r/w
5
0
r/w
43
4
0
Product Specification Rev. 3.2;December 2005
Function
r/w
3
0
Reset value: 01000001, 0x41
r/w
2
0
DecoderSource
r/w
1
MF RC500
PUBLIC
r/w
0