AK4683_07 Datasheet, PDF (24/84 Pages) Asahi Kasei Microsystems – Asynchronous Multi-Channel Audio CODEC with DIR/T

[AK4683]
2. Zero Detection
The AK4683 has one pin for zero detect flag output. The DZFM1-0 bits select the channel grouping (Table 7). The DZF
pin goes “H” when all of the enabled channels are continuously zeros for 8192 LRCK cycles. DZF pin immediately
goes to “L” if input data of any enabled channel is not zero after going DZF “H”.
Mode
0
1
2
3
DZFM1
bit
0
0
1
1
DZFM0
bit
0
1
0
1
L1
Enable
Enable
-
-
AOUT
R1
L2
Enable Enable
Enable -
- Enable
-
-
R2
Enable
-
Enable
-
(default)
3. Validity Detection
Table 7. Zero Detection Control
The AK4683 has Validity Detection function. DIR decodes the V bit and output “H” via pin. When unlocked, “L” is
output.
MS0427-E-02
- 24 -
2007/04