BT85x Series
Datasheet
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15
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Table 13: PCM burst mode specifications (Receive Only, Short-Frame Sync)
Ref No.
Characteristics
Minimum
Typical
Maximum
Unit
1
PCM bit clock frequency
-
-
24
MHz
2
PCM bit clock LOW
20.8
-
-
ns
3
PCM bit clock HIGH
20.8
-
-
ns
4
PCM_SYNC setup
8
-
-
ns
5
PCM_SYNC_hold
8
-
-
ns
6
PCM_IN setup
8
-
-
ns
7
PCM_IN hold
8
-
-
ns
Figure 8
and
Table 14
shows PCM Burst mode timing diagram and specifications for the receive-only mode of
long-frame sync.
Figure 8: PCM burst mode timing (Receive Only, Long Frame Sync)
Table 14: PCM burst mode specifications (Receive Only, Long-Frame Sync)
Ref No.
Characteristics
Minimum
Typical
Maximum
Unit
1
PCM bit clock frequency
-
-
24
MHz
2
PCM bit clock LOW
20.8
-
-
ns
3
PCM bit clock HIGH
20.8
-
-
ns
4
PCM_SYNC setup
8
-
-
ns
5
PCM_SYNC_hold
8
-
-
ns
6
PCM_IN setup
8
-
-
ns
7
PCM_IN hold
8
-
-
ns
8.4.
I
2
S Interface
The BT850-Sx supports two independent I
2
S digital audio ports. The I
2
S interface supports both master and slave
modes. The I
2
S signals are:
I
2
S clock: I
2
S SCK
I
2
S Word Select: I
2
S WS
I
2
S Data Out: I
2
S SDO
I
2
S Data In: I
2
S SDI
