6.14.1.2.5 RX Special Setting Register (0x0A)
Table 6-23 describes the bit fields of the RX Special Setting register. This register sets the gains and filters directly.
Default Value: 0x40, set at POR = H or EN = L and at each write to the ISO Control register (0x01)
Table 6-23 RX Special Setting Register (0x0A)
BIT NO. |
BIT NAME |
FUNCTION |
DESCRIPTION |
B7 |
C212 |
Band-pass 110 kHz to 570 kHz |
|
B6 |
C424 |
Band-pass 200 kHz to 900 kHz |
Appropriate for 424-kHz subcarrier used in ISO/IEC 15693 |
B5 |
M848 |
Band-pass 450 kHz to 1.5 MHz |
|
B4 |
hbt |
Band-pass 100 kHz to 1.5 MHz
Gain reduced for 18 dB |
|
B3 |
gd1 |
00 = Gain reduction 0 dB
01 = Gain reduction for 5 dB
10 = Gain reduction for 10 dB
11 = Gain reduction for 15 dB |
Sets the RX gain reduction and reduces sensitivity |
B2 |
gd2 |
B1 |
Reserved |
|
|
B0 |
Reserved |
|
|
NOTE
The setting of bits B4, B5, B6, and B7 to zero selects band-pass characteristic of 240 kHz to 1.4 MHz.