Part Number: ADS5404
I need to use three ADS5404s to sample 6 channel-125MHz IF signals with the function of SYNC,but when I process the sample data, I found that some channels is not SYNC with the orher channels,and the delay phase is 180° with the other channels,the phenomenon is as follows:
and my registor is shown as follows:
reg [15:0] CFG_REG0 = 16'hD2F0; //addr 0x2C RESET SPI
reg [15:0] CFG_REG1 = 16'h8206; //addr 0x01 ENABLE A/B CH GAIN/OFFSET;
reg [15:0] CFG_REG4 = 16'h8000; //addr 0x00 4 WIRE SPI
reg [15:0] CFG_REG5 = 16'h0780; //addr 0x02 SET OVER-RANGE THRESHOLD
reg [15:0] CFG_REG6 = 16'hAAA8; //*//addr 0x0E SYNC DRIVED FROM SYNC PINS
reg [15:0] CFG_REG7 = 16'hA010; //*//addr 0x0F SYNC DRIVED FROM SYNC PINS;VREF SEL-1.25V
reg [15:0] CFG_REG8 = 16'hFFDF; //addr 0x38 HP MODE;INT BIAS;SYNC BUF DISABLED;INPUT BUF DIASBALED
reg [15:0] CFG_REG9 = 16'hDE1B; //addr 0x3A
reg [15:0] CFG_REGA = 16'h2FFF; //addr 0x66 NOT USED PINS PD;DA11-DA0 enable
reg [15:0] CFG_REGB = 16'h2FFF; //addr 0x67 NOT USED PINS PD;DB11-DB0 enable
reg [15:0] CFG_REG2 = 16'h4B18; //addr 0x03/0x1A CLEAR ACCUMULATOR VALUES
reg [15:0] CFG_REG3 = 16'h0B18; //addr 0x03/0x1A START DC AND AUTO-CORRECTION LOOP
need I correct the registor?please help me,thank you very much!!
