Specifications

L506 Hardware Design
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3.6 PCM interface
3.6.1 PCM interface definition
L506 provides hardware PCM interface for external codec. L506 PCM interface can be used inshort
sync master mode only, and only supports 16 bits linear format：
Table 3-11 PCM interface definition
Pin No.
Signal name
I/O Type
DC Characteristics（V）
Min.
Typ.
Max.
75
PCM_SYNC
PCM
synchronizing
signal
-0.3
1.8
1.9
74
PCM_DIN
PCM data input
-0.3
1.8
1.9
73
PCM_DOUT
PCM Data output
-0.3
1.8
1.9
76
PCM_CLK
PCM Data clock
-0.3
1.8
1.9
Figure 3-7 PCM_SYNC timing
Figure 3-8 Codec to L506 module timing