Rainbow Electronics RF22 - Manual (Page 81)

RF22
Version: 0.1 Date: 12/23/2008
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6:0 vcocal[6:0] VCO Calibration Results.
Register 5Ch. Synthesizer Test
Bit D7 D6 D5 D4 D3 D2 D1 D0
Name dsmdt vcotype enoloop dsmod dsorder[1:0] dsrstmode dsrst
Type R/W R R/W R/W R/W R/W R/W
Reset value = 0x001110
Bit Name Function
7 dsmdt Enable DSM Dithering.
If low, dithering is disabled.
6 vcotype VCO Type.
0: basic, constant K
1: single varactor, changing K
5 enoloop Open Loop Mode Enable.
4 dsmod Delta-Sigma Modulus.
0: 64 000 1 – 65 536
3:2 dsorder[1:0] Delta-Sigma Order.
00: 0 order
01: 1st order
10: 2nd order
11: Mash 111
1 dsrstmode Delta-Sigma Reset Mode.
0 dsrst Delta-Sigma Reset.
Register 5Dh. Block Enable Override 1
Bit D7 D6 D5 D4 D3 D2 D1 D0
Name enmix enina enpga enpa enbf5 endv32 enbf12 enmx2
Type R/W R/W R/W R/W R/W R/W R/W R/W
Reset value = 00000000
Bit Name Function
7 enmix Mixer Enable Override.
6 enlna LNA Enable Override.
5 enpga PGA Enable Override.
4 enpa Power Amplifier Enable Override.
3 enbf5 Buffer 5 Enable Override.
2 endv32 Divider 3_2 Enable Override.
1 enbf12 Buffer 1_2 Enable Override.
0 enmx2 Multiplexer 2 Enable Override.
Register 5Eh. Block Enable Override 2
Bit D7 D6 D5 D4 D3 D2 D1 D0
Name ends enldet enmx3 enbf4 enbf3 enbf11 enbf2 pllreset
Type R/W R/W R/W R/W R/W R/W R/W R/W
Reset value = 01000000
Bit Name Function
7 ends Delta-Sigma Enable Override.
6 enldet Lock Detect Enable.
(Direct control, does not need override!)
5 enmx3 Multiplexer 3 Enable Override.
4 enbf4 Buffer 4 Enable Override.
3 enbf3 Buffer 3 Enable Override.
2 enbf11 Buffer 1_1 Enable Override.
1 enbf2 Buffer 2 Enable Override.