ZHCSDC1D September 2013 – October 2018 TAS5766M , TAS5768M
PRODUCTION DATA.
The TAS576xM supports industry-standard audio data formats, including standard I2S and left-justified. Data formats are selected via Register (Pg0Reg40). All formats require binary 2s-complement, MSB-first audio data, up to 32-bit audio data is accepted.
The TAS576xM also supports right-justified and TDM. I2S, LJ, RJ, and TDM are selected using Register (Pg0Reg40). All formats require binary 2s complement, MSB-first audio data. Up to 32 bits are accepted. Default setting is I2S and 24 bit word length. The I2S slave timing is shown in Figure 35.
Figure 35. TAS576xM Serial Audio Timing – Slave | MIN | MAX | UNIT | ||
|---|---|---|---|---|
| tBCY | BCLK pulse Cycle Time | 40 | ns | |
| tBCL | BCLK pulse Width LOW | 16 | ns | |
| tBCH | BCLK pulse Width HIGH | 16 | ns | |
| tBL | BCLK Rising Edge to LRCLK Edge | 8 | ns | |
| tBCLK | BCLK frequency at DVDD = 3.3V | 24.576 | MHz | |
| tLB | LRCLK Edge to BCLK Rising Edge | 8 | ns | |
| tDS | DATA set Up time | 8 | ns | |
| tDH | DATA Hold Time | 8 | ns | |
| tDOD | DATA delay time from BCLK falling edge | 15 | ns | |
The TAS576xM can act as an I2S master, generating BCLK and LRCLK as outputs from the SCLK input.
| REGISTER | FUNCTION |
|---|---|
| Page 0, register 9, D(0), D(4) and D85) | I2S master Mode select |
| Register 32, D(6:0) | BCLK divider and LRCLK divider |
| Register 33, D(7:0) |
The I2S master timing is shown in Figure 36 and Table 12.
Figure 36. TAS576xM Serial Audio Timing - Master | MIN | MAX | UNIT | ||
|---|---|---|---|---|
| tBCY | BCLK pulse Cycle Time | 40 | ns | |
| tBCL | BCLK pulse Width LOW | 16 | ns | |
| tBCH | BCLK pulse Width HIGH | 16 | ns | |
| tBL | BCLK Rising Edge to LRCLK Edge | 8 | ns | |
| tBCLK | BCLK frequency at DVDD = 3.3V | 24.576 | MHz | |
| tLB | LRCLK Edge to BCLK Rising Edge | 8 | ns | |
| tDS | DATA set Up time | 8 | ns | |
| tDH | DATA Hold Time | 8 | ns | |
| tDOD | DATA delay time from BCLK falling edge | 15 | ns | |
Figure 37. Left Justified Audio Data Format
Figure 38. I2S Audio Data Format
Figure 39. Right Justified Audio Data Format
Figure 40. TDM Audio Data Format
Figure 41. TDM 2 Audio Data Format
Figure 42. TDM 3 Audio Data Format