Sundance SMT943 - Manual (Page 41)

User Manual SMT943 Page 41 of 54 Last Edited: 23/08/2011 17:24:00
ADC Chab Register 9 0x39
Byte Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
0 Reserved Offset Pedestal ChB (Common)
Default ‘00’
1 Reserved
Default ‘00000000’
ADC Chab Register 9 0x39
Setting Bit 5:0 Description Offset Pedestal ChA (Common)
0 ‘011111’ Pedestal=+31LSBs
1 ‘011110’ Pedestal=+30LSBs
2 … …
3 ‘000000’ Pedestal=0
4 … …
5 ‘111111’ Pedestal=-1LSB
6 ‘111110’ Pedestal=-2LSB
7 … …
8 ‘100000’ -32LSBs
DAC chcd Register 0 0x40.
DAC chcd Register 0 0x40
Byte Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
1 Reserv
ed
Clk1_in_e
na
Clk1c_in_ena Reserved Fir4_en qmc_offset_en
a
qmc_corr_en
a
mixer_en
a
Default ‘1’ ‘1’ ‘1’ ‘0’ ‘0’ ‘0’ ‘0’ ‘0’
0 insel_mode Reserved Synchr_c
lkin
Twos inv_clk interp_value
Default ‘00’ ‘0’ ‘0’ ‘0’ ‘0’ ‘00’
DAC chcd Register 0 0x40
Setting Bit 1:0 Description interpolation value
0 00 1x.
1 01 2x.
2 10 4x.
3 11 8x.
Setting Bit 2 Description inv_clk
0 0 Input clock not inverted.
1 1 Input clock inverted.
Setting Bit 2 Description twos
0 0 Binary format
1 1 Two’s complement format.