Datasheet

SCL
SDA
Noise
SCL
SDA
Noise
PCM1795
SLES248 – MAY 2009 ........................................................................................................................................................................................................ www.ti.com
Case 2:
1. t
(SCK)
> 120 ns
2. t
(S – HD)
or t
(RS – HD)
< t
(SCK)
× 5
3. Spike noise exists on both SCL and SDA during the hold time.
Figure 49. Case 2
When these conditions occur at the same time, the PCM1795 fails to detect a start condition.
Case 3:
1. t
(SCK)
< 50 ns
2. t
(SP)
> t
(SCK)
3. Spike noise exists on SCL just after SCL goes low.
4. Spike noise exists on SDA just before SCL goes low.
Figure 50. Case 3
When these conditions occur at the same time, the PCM1795 erroneously detects a start or stop condition.
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