S2R72V27 Просмотр технического описания (PDF) - Seiko Epson Corp

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производитель

S2R72V27

Supports HS (480 Mbps), FS (12 Mbps), and LS (1.5 Mbps) transfer

Seiko Epson Corp 

4. Explanation of Functions

4.4 Power Management

This LSI includes a power management function featuring two power management states, SLEEP

and ACTIVE, together with the CPU_Cut power management state. (See Fig. 4.3.)

All function blocks are active in the ACTIVE state, whereas only the bare minimum circuits

necessary for restarting from standby mode are active in SLEEP state. CPU_Cut mode minimizes

power consumption attributable to the CPU-I/F input buffer.

ACTIVE

CPU

-I/F

OSC

FIFO

SIE UTM

SLEEP

CPU

-I/F*

OSC

FIFO

SIE UTM

CPU_Cut

CPU

-I/F**

OSC

FIFO

SIE UTM

Active

Inactive

* The CPU-I/F is only partially active in SLEEP state.

The asynchronous access register can be accessed.

** CPU-I/F operation is suspended in CPU_Cut to minimize

power consumption attributable to the I/O input buffer.

Fig. 4.3 Power management states

6

EPSON

S2R72V27 Data Sheet (Rev. 1.00)

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