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- Timestamp:
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Jun 14, 2010, 6:13:19 PM (14 years ago)
- Author:
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seskar
- Comment:
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3 | 3 | === !FreeBo Registers === |
4 | 4 | |
| 5 | FreeBo registers are shown in the following table: |
5 | 6 | {{{ |
6 | 7 | #!rst |
… |
… |
|
24 | 25 | +-----------------------+------------+----------+------|----------------------------------------------------+ |
25 | 26 | }}} |
| 27 | |
| 28 | For example, to generate Fout = 3314.705 MHz (plus other LO default values), |
| 29 | configure six registers as shown below: |
| 30 | |
| 31 | * R0: 00000000101001011001110101101000 |
| 32 | * R1: 00001000000000001011111010000001 |
| 33 | * R2: 00000001000000000101111011000010 |
| 34 | * R3: 00000000000000000000010010110011 |
| 35 | * R4: 00000000100001010000000111111100 |
| 36 | * R5: 00000000010110000000000000000101 |
| 37 | |
| 38 | For example, to initialize the MAX7301 chip configure the first eight registers as in the following. |
| 39 | |
| 40 | * R0: 0000010000000001 |
| 41 | * R1: 0000100101010101 |
| 42 | * R2: 0000101001010101 |
| 43 | * R3: 0000001101010101 |
| 44 | * R4: 0000110001010101 |
| 45 | * R5: 0000110101010101 |
| 46 | * R6: 0000011001010101 |
| 47 | * R7: 0000111101010101 |
| 48 | |
| 49 | To generate default setting (straight through setting) use the following configuration. |
| 50 | |
| 51 | * R8: 0100010001000000 /RX switch straight |
| 52 | * R9: 0100110001000000 /TX switch straight |
| 53 | * R10: 0101010000000000 /don't care |
| 54 | * R11: 0101110000000000 /don't care |
| 55 | |
| 56 | To generate crossed-switch setting (inputs crossed over) use the following configuration. |
| 57 | |
| 58 | * R8: 0100010000100000 /RX switch cross |
| 59 | * R9: 0100110000100000 /TX switch cross |
| 60 | * R10: 0101010000000000 /don't care |
| 61 | * R11: 0101110000000000 /don't care |
| 62 | |
| 63 | For example, “11111111” corresponds to lowest attenuation level, i.e., the maximum FreeBo gain while setting it to “10100000”, corresponds to 15 dB receiver attenuation and 45 dB of transmitter attenuation. |