CYUSB3011-BZXC CYPRESS [Cypress Semiconductor], CYUSB3011-BZXC Datasheet - Page 11

• Manufacturer Part Number: CYUSB3011-BZXC
• Manufacturer: CYPRESS [Cypress Semiconductor]

Table 6. Entry and Exit Methods for Low-Power Modes (continued)
Document Number: 001-52136 Rev. *L
Standby Mode (L3)
Core Power Down
Mode (L4)
Low-Power Mode
■
■
■
■
■
■
■
■
■
■
■
■
■
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.
Upon wakeup, the core re-starts and runs
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
The power consumption in this mode does
not exceed ISB
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
Characteristics
4
■
■
Firmware executing on
ARM926EJ-S core or external
processor configures the appropriate
register
Turn off V
Methods of Entry
DD
■
■
■
■
■
■
Detection of VBUS
Level detect on
UART_CTS (Program-
mable Polarity)
GPIF II interface
assertion of CTL[0]
Assertion of RESET#
Reapply VDD
Assertion of RESET#
Methods of Exit
CYUSB301X
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