ZHCSDC1D September 2013 – October 2018 TAS5766M , TAS5768M
PRODUCTION DATA.
The TAS576xM has a zero-detect function. When the device detects the continuous zero data for both L-ch and R-cn, or separate L-cn and R-ch, Analog mutes are set to both OUTL and OUTR, or separate OUTL and OUTR. These are controlled by Page0, Register 65, D(2:1) as shown in Table 13.
Continuous Zero data cycles are counted by LRCLK, and the threshold of decision for analog mute can be set by Page 0, Register 59, D(6:4) for L-ch, and D(2:0) for Rch as shown in Table 14. Default values are 0 for both channels.
| ATMUTECTL | VALUE | FUNCTION |
|---|---|---|
| Bit:2 | 0 | Independently L-ch or R-ch are zero data for zero detection |
| 1 (Default) | Both L-ch and R-ch have to be zero data for zero detection | |
| Bit:1 | 0 | Zero detection and analog mute are disabled for R-ch |
| 1 (Default) | Zero detection and analog mute are enabled for R-ch | |
| Bit:0 | 0 | Zero detection and analog mute are disabled for L-ch |
| 1 (Default) | Zero detection and analog mute are enabled for L-ch |
| ATMUTETIML /ATMUTETIMR | NUMBER of LRCLKs | TIME at 48 kHz |
|---|---|---|
| 0 0 0 | 1024 | 21 ms |
| 0 0 1 | 5120 | 106 ms |
| 0 1 0 | 10240 | 213 ms |
| 0 1 1 | 25600 | 533 ms |
| 1 0 0 | 51200 | 1.07 sec |
| 1 0 1 | 102400 | 2.13 sec |
| 1 1 0 | 256000 | 5.33 sec |
| 1 1 1 | 512000 | 10.66 sec |