AK4452VN Datasheet, PDF (62/91 Pages) Asahi Kasei Microsystems – 115dB 768kHz 32-bit 2ch Premium DAC

[AK4452]
■ Error Detection
Three types of error can be detected in I²C mode when the LDOE pin = “H”. (Table 26)。
No Error
Error Condition
1 Internal Reference Voltage Error Internal reference voltage is not powered up.
2 LDO Over Voltage Detection
LDO voltage > 2.2 ~ 2.5V
3 LDO Over Current Detection
LDO current < 40 ~ 110mA
Table 26. Error Detection
In I²C mode, the AK4452 does not generate acknowledge (ACK) in error status.
■ System Reset
The AK4452 should be reset once by bringing the PDN pin = “L” upon power-up. In PCM mode, the AK4452
exits this system reset (power-down mode) by MCLK and LRCK after the PDN pin = “H”. The AK4452
detects a rising edge of MCLK first, and then the analog block exits power-down mode by a rising edge of
LRCK. The digital block exits power-down mode after the internal counter counts MCLK for 4/fs.
In DSD mode, the AK4452 exits this system reset (power-down mode) by MCLK and DCLK after the PDN
pin = “H”. The AK4452 detects a rising edge of MCLK first, and then the analog block exits power-down
mode by a rising edge of DCLK. The digital block exits power-down mode after the internal counter counts
MCLK for 4/fs.
Rev. 0.1
- 62 -
2014/04