Rainbow-electronics AT73C246 Manual do Utilizador descarregar pdf (Página 35)

11050A–PMAAC–07-Apr-10

AT73C246

Figure 11-8. AT73C246 - HRST state Supplies Shutdown timing diagram.

Note: 1. VDDx activity during RUN state is set by Bit7 of register VDDx_CTRL

Notes: 1. VDDx activity during STANDBY state is set by register PMU_STANDBY_SUPPLIES.

2. VDD4 activity during RUN state is set by Bit7 of register VDD4_CTRL.

Table 11-7. HRST state timing table from RUN STATE

Symbol Parameter Comments Min Typ Max Units

HRST

HRST Event Detection Time 58 62 66 µs

OFF_AUDIO

Audio CODEC Shutdown Time

Audio CODEC is ON 486 512 538 ms

Audio CODEC is OFF 58 62 66 µs

OFF_VDDx

VDDx SHUTDOWN Time

VDDx is OFF in RUN state

(1)

58 62 66 µs

VDDx is ON in RUN state

(1)

4.8 5.2 5.4 ms

OFF_PMU

PMU Functions Shutdown Time 1.4 1.5 1.6 ms

Table 11-8. HRST state timing table from STANDBY STATE

Symbol Parameter Comments Min Typ Max Units

HRST

HRST Event Detection

Time

58 62 66 µs

OFF_AUDIO

Audio CODEC Shutdown

Time

Audio CODEC is ON 486 512 538 ms

Audio CODEC is OFF 58 62 66 µs

OFF_VDDx

VDDx SHUTDOWN Time

VDDx is OFF during STANDBY state

(1)

58 62 66 µs

VDDx is ON during STANDBY state

(1)

4.8 5.2 5.4 ms

OFF_VDD4

VDD4 SHUTDOWN Time

VDD4 is OFF in RUN state

(2)

58 62 66 µs

VDD4 is ON in RUN state

(2)

4.8 5.2 5.4 ms

OFF_PMU

PMU Functions Shutdown

Time

1.4 1.5 1.6 ms

RUN / STANDBY /

POWERDOWN

S TATE

SUPPLIES SHUTDOWN

HRST_EVENT

EVENT

HRST

STATE

HRST

OFF_VDD3

OFF_AUDIO

DD3

(3.3V)

DD1

(1.2V)

DD2

(1V)

3.3V

1.2V

1.85V

RSTB

DD0

(1.85V)

OFF_VDD1

OFF_VDD0

OFF_VDD2

PMU FUNCTIONS

(LDO4, ADC, LED,...)

OFF_PMU

RUN / STANDBY /

POWERDOWN

STATE

SUPPLIES SHUTDOWN

HRST_EVENT

EVENT

HRST

STATE

HRST

OFF_VDD2

OFF_AUDIO

DD2

(1V)

DD1

(1.2V)

DD3

(3.3V)

1.2V

1.85V

3.3V

RSTB

DD0

(1.85V)

OFF_VDD1

OFF_VDD0

OFF_VDD3

PMU FUNCTIONS

(LDO4, ADC, LED,...)

OFF_PMU

SEQUENCE A SEQUENCE B

1 2 ... 30 31 32 33 34 35 36 37 38 39 40 ... 158 159

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