Rainbow Electronics RF22 - Manual (Page 82)

RF22
Version: 0.1 Date: 12/23/2008
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0 pllreset PLL Reset Enable Override.
Register 5Fh. Block Enable Override 3
Bit D7 D6 D5 D4 D3 D2 D1 D0
Name enfrdv endv31 endv2 endv1p5 dvbshunt envco encp enbg
Type R/W R/W R/W R/W R/W R/W R/W R/W
Reset value = 00000000
Bit Name Function
7 enfrdv Fractional Divider Enable Override.
6 endv31 Divider 3_1 Enable Override.
5 endv2 Divider 2 Enable Override.
4 endv1p5 Divider 1.5 (div-by-1.5) Enable Override.
3 dvbshunt VCO Bias Shunt Enable Override Mode.
2 envco VCO Enable Override.
1 encp Charge Pump Enable Override.
0 enbg Bandgap Enable Override.
Register 60h. Channel Filter Coefficient Address
Bit D7 D6 D5 D4 D3 D2 D1 D0
Name Reserved
chfiladd[3:0]
Type R/W R/W
Reset value = 00000000
Bit Name Function
7:4 Reserved Reserved.
3:0 chfiladd[3:0] Channel Filter Coefficient Look-up Table Address.
The address for channel filter coefficients used in the RX path.
Register 61h. Channel Filter Coefficient Value
Bit D7 D6 D5 D4 D3 D2 D1 D0
Name Reserved chfilval[5:0]
Type R/W R/W
Reset value = 00000000
Bit Name Function
7:6 Reserved Reserved.
5:0 chfilval[5:0] Filter Coefficient Value in the Look-up Table Addressed by the chfiladd[3:0].
Register 62h. Crystal Oscillator/Power-on-Reset Control
Bit D7 D6 D5 D4 D3 D2 D1 D0
Name pwst[2:0] clkhyst enbias2x enamp2x bufovr enbuf
Type R R/W R/W R/W R/W R/W
Reset value = xxx00100
Bit Name Function
7:5 pwst[2:0] Internal Power States of the Chip.
000: low power (stand-by/sleep/sensor)
001: ready
011: tune
010: TX
010: RX
4 clkhyst Clock Hysteresis Setting.
3 enbias2x 2 Times Higher Bias Current Enable.
2 enamp2x 2 Times Higher Amplification Enable.