请检查按照手册24页的相关要求进行操作,
In Continuous-sync mode, either a single sync pulse
or a continuous clock may be applied. When a single
sync pulse is applied (rising edge), the device
behaves similar to the Pulse-sync mode. However, in
this mode, DRDY continues to toggle unaffected but
the DOUT output is held low until data are ready, 63
DRDY periods later. When the conversion data are
non-zero, new conversion data are ready (as shown
in Figure 52)
When a continuous clock is applied to the SYNC pin,
the period must be an integral multiple of the output
data rate or the device re-synchronizes. Note that
synchronization results in the restarting of the digital
filter and an interruption of 63 readings (refer to
Table 10).
When the sync input is first applied, the device
re-synchronizes (under the condition tSYNC ≠ N/fDATA).
DRDY continues to output but DOUT is held low until
the new data are ready. Then, if SYNC is applied
again and the period matches an integral multiple of
the output data rate, the device freely runs without re-synchronization