CM6571 Datasheet, PDF (47/63 Pages) C-Media Electronics – USB 2.0 full speed-compliant

CM6571
USB Audio Sound Chip
9.4 Power level description table of DSP
9.4.1 power levels of DSP core
Power Levels
Digital description
Analog description
1.2V core power: OFF
0
PLL clock: OFF
(No power consumption)
Analog Logic Power: ON
Others: OFF
Self regulator: 0uA
External DVDD: 1uA
1
1.2V core power: ON
PLL clock: OFF
Only consume static power (120uW or 100uA)
1.2V regulator: ON
PLL power: OFF
Others: OFF
80uA
1.2V core power: ON
1.2V regulator: ON
2
PLL clock: ON
PLL power: ON
DSP and I2C is operated at the lowest frequency Others: OFF
3.792 MHz (703uW or 585uA)
80+500uA
1.2V core power: ON
PLL clock: ON
1.2V/PLL: ON
3
ADC digital filter
ADC/DAC: OFF
DSP, I2C, and ADDA (in order to avoid pop-noise) Mic Bias/ OPA of DAC: ON
is operated at the lowest frequency 3.792 1050+500uA
MHz (772uW or 643uA)
1.2V core power: ON
1.2V regulator: ON
4
PLL clock: ON
PLL power: ON
ENC normal operation mode. DSP is operated at Others: ON
45.5 MHz (17mW or 14.2mA)
4200+500uA
Active
Stand-by
Switch-Off
Power-Off
Phone state and CM6571 state contrast table
Phone States
CM6571 States
ENC ON or Bypass
Suspend
Power Down
No power
Revised: Nov. 2012
Page 47 / 63
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