Rainbow Electronics AT73C246 - Manual (Page 35)

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
T
HRST
HRST Event Detection Time 58 62 66 µs
T
OFF_AUDIO
Audio CODEC Shutdown Time
Audio CODEC is ON 486 512 538 ms
Audio CODEC is OFF 58 62 66 µs
T
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
T
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
T
HRST
HRST Event Detection
Time
58 62 66 µs
T
OFF_AUDIO
Audio CODEC Shutdown
Time
Audio CODEC is ON 486 512 538 ms
Audio CODEC is OFF 58 62 66 µs
T
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
T
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
T
OFF_PMU
PMU Functions Shutdown
Time
1.4 1.5 1.6 ms
RUN / STANDBY /
POWERDOWN
STATE
SUPPLIES SHUTDOWN
HRST_EVENT
EVENT
HRST
STATE
T HRST
T OFF_VDD3
T OFF_AUDIO
V DD3 (3.3V)
V DD1 (1.2V)
V DD2 (1V)
3.3V
1.2V
1.85V
1V
RSTB
V DD0 (1.85V)
T OFF_VDD1
T OFF_VDD0
T OFF_VDD2
PMU FUNCTIONS
(LDO4, ADC, LED,...)
T OFF_PMU
RUN / STANDBY /
POWERDOWN
STATE
SUPPLIES SHUTDOWN
HRST_EVENT
EVENT
HRST
STATE
T HRST
T OFF_VDD2
T OFF_AUDIO
V DD2 (1V)
V DD1 (1.2V)
V DD3 (3.3V)
1V
1.2V
1.85V
3.3V
RSTB
V DD0 (1.85V)
T OFF_VDD1
T OFF_VDD0
T OFF_VDD3
PMU FUNCTIONS
(LDO4, ADC, LED,...)
T OFF_PMU
SEQUENCE A SEQUENCE B