AX58200 datasheet(42/180 Pages) ASIX

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AX58200

EtherCAT Slave Controller SoC

2.2.4

Power Modes and Wake-up Sources

The AX58200 has power manager unit to support several operating modes for saving power. Table 2.2-2 lists all

power modes in the AX58200.

Mode

CPU Operating Maximum Speed

(MHz)

LDO_CAP

(V)

Clock Disable

Normal mode

160

1.20

All clocks are disabled by control register.

Turbo mode

192

1.26

All clocks are disabled by control register.

Idle mode

CPU enter Sleep mode

1.20/1.26

Only CPU clock is disabled.

Fast

Wakeup

Power-

down mode (FWPD)

CPU enters Deep Sleep mode

1.20/1.26

Most clocks are disabled except LIRC/LXT,

and only RTC/WDT/Timer/UART peripheral

clocks still enable if their clock sources are

selected as LIRC/LXT.

Normal

Power-down

mode

(NPD)

CPU enters Deep Sleep mode

1.20/1.26

Most clocks are disabled except LIRC/LXT,

and only RTC/WDT/Timer/UART peripheral

clocks still enable if their clock sources are

selected as LIRC/LXT.

Low leakage Power-down

mode

(LLPD)

CPU enters Deep Sleep mode

0.9

Most clocks are disabled except LIRC/LXT,

and only RTC/WDT/Timer/UART peripheral

clocks still enable if their clock sources are

selected as LIRC/LXT.

Standby

Power-down

mode 0

(SPD0)

[1]

Power off

Floating

Only LIRC/LXT still enable for RTC

function and wake-up timer usage

Standby

Power-down

mode 1

(SPD1)

[1]

Power off

Floating

Only LIRC/LXT still enable for RTC

function and wake-up timer usage

Deep Power-down mode

(DPD)

Power off

Floating

Only LIRC/LXT still enable for RTC

function and wake-up timer usage

Table 2.2-2: Power Mode Table

Note: [1]

User must turn on LIRC before entering SPD0/1 mode.

There are different power mode entry settings. Each power mode has different entry setting and leaving

condition. Table 2.2-3 shows the entry setting for each power mode. When chip power-on, chip is running as

normal mode. User can enter each mode by setting SLEEPDEEP (SCR[2]), PDEN (CLK_PWRCT:[7]) and

PDMSEL (CLK_PMUCTL[2:0]) and execute WFI instruction.

Table 2.2-3: Power Mode Difference Table

SLEEPDEEP

(SCR[2])

PDEN

(CLK_PWRCTL[7])

PDMSEL

(CLK_PMUCTL

[2:0])

CPU Run WFI

Instruction

Normal mode

Idle mode

YES

Fast Wakeup Power-down mode

YES

Normal Power-down mode

YES

Low leakage Power-down mode

YES

Standby Power-down mode 0

YES

Standby Power-down mode 1

YES

Deep Power-down mode

YES

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