Changes between Version 1 and Version 2 of crkit/Hardware/RFBoards/aSDR1

Timestamp:

Jun 14, 2010, 6:13:19 PM (14 years ago)

Author:

seskar

Comment:

--

crkit/Hardware/RFBoards/aSDR1

@@ -3 +3 @@
 === !FreeBo Registers ===
 
+FreeBo registers are shown in the following table:
 {{{
 #!rst
@@ -24 +25 @@
 +-----------------------+------------+----------+------|----------------------------------------------------+
 }}}
+
+For example, to generate Fout = 3314.705 MHz (plus other LO default values),
+configure six registers as shown below:
+
+ * R0: 00000000101001011001110101101000
+ * R1: 00001000000000001011111010000001
+ * R2: 00000001000000000101111011000010
+ * R3: 00000000000000000000010010110011
+ * R4: 00000000100001010000000111111100
+ * R5: 00000000010110000000000000000101
+
+For example, to initialize the MAX7301 chip configure the first eight registers as in the following.
+
+ * R0: 0000010000000001
+ * R1: 0000100101010101
+ * R2: 0000101001010101
+ * R3: 0000001101010101
+ * R4: 0000110001010101
+ * R5: 0000110101010101
+ * R6: 0000011001010101
+ * R7: 0000111101010101
+
+To generate default setting (straight through setting) use the following configuration.
+
+ * R8: 0100010001000000   /RX switch straight
+ * R9: 0100110001000000   /TX switch straight
+ * R10: 0101010000000000  /don't care
+ * R11: 0101110000000000  /don't care
+
+To generate crossed-switch setting (inputs crossed over) use the following configuration.
+
+ * R8: 0100010000100000  /RX switch cross
+ * R9: 0100110000100000  /TX switch cross
+ * R10: 0101010000000000   /don't care
+ * R11: 0101110000000000   /don't care
+
+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.