ADS4145: About Serial Register Readout

kob

Part Number: ADS4145

Tool/software:

Hi,

Please tell me the timing specifications when reading data from a register.
Which edge is the data output edge? (Rising/Falling)
How long does it take from that edge until the data output is confirmed? (max.Tco/min.Tco)

Regards,

over 1 year ago

0 Rob Reeder over 1 year ago

TI__Mastermind 41040 points

Hi,

See Page 18, Figure 5 in the datasheet and please refer to the timing diagram.

Regards,

Rob

0 kob over 1 year ago

Prodigy 140 points

Hi,
Thank you for your answer.
I understood that Figure 5 in the datasheet was the timing specification for writing.
(Figure 5 is for SDATA, not OVR_SDOUT.)
Is it correct to understand that this also applies when reading data?
If I replace SDATA with OVR_SDOUT, is the following understanding correct?
・The data output edge is the falling edge.
・min.Tco=25ns=tDH, max.Tco=75ns=tSCLK-tDSU(=1/10MHz-25ns)
(When the clock frequency is 10MHz)
Regards,

+1 Rob Reeder over 1 year ago in reply to kob

TI__Mastermind 41040 points

Hi,

Yes, this is correct.

Regards,

Rob

Data converters

Data converters forum

ADS4145: About Serial Register Readout