Sundance SMT702 User Manual
Page 43
4.3.1.2.17
ADCB (ADC083000) Register 0xF – Test Pattern register –
0xBC (write and read).
Offset 0x0400 -
ADCB (ADC083000) Register 0xF – Test Pattern Register – 0xBC (write and read)
Byte
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
1
Reserved
Reserved
Reserved
Reserved
TPO
Reserved
Reserved
Reserved
Default
‘1’
‘1’
‘1’
‘1’
‘0’
‘1’
‘1’
‘1’
0
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Default
‘1’
‘1’
‘1’
‘1’
‘1’
‘1’
‘1’
‘1’
Offset 0x0400 -
ADCB (ADC083000) Register 0xF – Test Pattern Register – 0xBC (write
and read)
Setting
Bit 11
Description (TPO – Test Pattern Output Enable)
0
0
Normal mode of Operation.
1
1
All ADC outputs in Test Pattern mode.
4.3.1.2.18
Frequency Synthesizer (LMX2531) Register R0 – 0xC0
(write and read).
The LMX2531 in the SMT702 is a clock synthesizer that generates a frequency
within the range 1499-1510MHz. The chip has a built-in VCO and uses a reference
clock to lock its pll.
Offset 0x0400 -
Frequency Synthesizer (LMX2531) Register R0 – 0xC0 (write and read)
Byte
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
2
Reserved
N[7:4]
Default
‘0000’
‘0000’
1
N[3:0]
NUM[11:8]
Default
‘0000’
‘0000’
0
NUM[7:0]
Default
‘00000000’
Offset 0x0400 -
Frequency Synthesizer (LMX2531) Register R0 – 0xC0 (write and read)
Setting
Bit 11-0
Fractional numerator (NUM[11:0])
0
0
Value between 0 (all 0s) and 4194303 (all 1s)
Setting
Bit 21-12
N Counter (N[7:0])
0
0
Value between 0 (0x0) and 2039 (0x3F7)