Tool/software:
Hi,
We are working on DAC12DL3200 Digital to analog converter(DAC) with LVDS Interface operating with Dual channel, 4 LVDS buses.
We set DACCLK 1G, LVDS CLK 125M, and SYSREF 10M. The STROBE is set every 8 periods of LVDS CLK, which meets the provided time sequence for MODE 0 (we use the STROBE pin).
The NCO MODE is working correctly, but the LVDS MODE has no output.
However, we read the register:
SYNC_STATUS Register(0x800) always be f0;
LVDS_ALM Register(0X821) always be ff (no matter STROBE is given or not);
FIFO_ALM Register(0x820) always be 00(we assume the data has never get in to the FIFO);
Our register config is shown below:
x"000080",--Assert reset
x"000000",--De-assert reset
x"010151", --51 LVDS
x"004800",--set DCM_EN
x"002103",--disable AUTOMUTE，TXEN pin ENABLE
x"010600",--LVDS_RESOLUTION & 1: STROBE; 0:LSB_SYNC
x"016000",--output mode
x"0823FF",--set MUTE_MASK Register
x"0824FF",--set MUTE_MASK Register
x"890000",--Read FUSE_DONE
x"010001", --SET DP_EN
x"0821FF", --CLEAR ALM
x"022002", -- FIFO ALIGN
x"880000",--wait for LVDS_STROBE_DET
x"020007", -- config FIFO DLY
x"0822FF" -- Clear ALL SYS_ALM bits
Why LVDS MODE have no output? and the ALM Register is not changing as we expected, could you plz help us out?
