CYUSB2014-BZXI datasheet(23/82 Pages) INFINEON

23 / 82 page

Datasheet

001-52136 Rev. *Y

2022-08-11

EZ-USB FX3

SuperSpeed USB Controller

Power

Note: The power consumption depends on how the FX3 IOs are utilized in the application. Refer to KBA85505 to

estimate the current consumption by different power domains (VIO1–VIO5).

Standby Mode

(L3)

• The power consumption in this mode

does not exceed ISB3

• All configuration register settings and

program/data RAM contents are

preserved. However, data in the buffers

or other parts of the data path, if any, is

not guaranteed. Therefore, the external

processor should take care that the data

needed is read before putting FX3 into

this Standby Mode

• The program counter is reset after

waking up from Standby

• GPIO pins maintain their configuration

• Crystal oscillator is turned off

• Internal PLL is turned off

• USB transceiver is turned off

• ARM926EJ-S core is powered down.

Uponwakeup,thecorere-startsandruns

the program stored in the program/data

RAM

• Power supply for the wakeup source and

core power must be retained. All other

power domains can be turned on/off

individually

• FirmwareexecutingonARM926EJ-Score

or external processor configures the

appropriate register

• Detection of VBUS

• Level detect on

UART_CTS

(Programmable Polarity)

• GPIF II interface assertion

of CTL[0]

• Assertion of RESET#

Core Power

Down Mode

(L4)

• The power consumption in this mode

does not exceed ISB4

• Core power is turned off

• All buffer memory, configuration

registers, and the program RAM do not

maintain state. After exiting this mode,

reload the firmware

• In this mode, all other power domains

can be turned on/off individually

• Turn off VDD

• Reapply VDD

• Assertion of RESET#

Table 6

Entry and Exit methods for Low-Power Modes (continued)

Low-Power

Mode

Characteristics

Methods of Entry

Methods of Exit

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