Analog Devices Blackfin ADSP-BF537 Hardware Reference Manual page 1069

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to enable wakeup upon assertion of the

external PHY device. If no external PHY interrupt is needed, or if

using the ADSP-BF534, set this bit to enable a general-purpose

external event via the

bit on the ADSP-BF534.)

• Activity on the

control bit to enable wakeup upon detection of CAN bus activity

on page 9-38

If the on-chip supply controller is bypassed, so that V

externally, the only way to power down the core is to remove the external

voltage source.

When the core is powered down, V

the internal state of the processor is not maintained, with the

exception of the

tion stored internally (memory contents, register contents, and so

on) must be written to a non-volatile storage device prior to remov-

ing power. Be sure to set the drive CKE low during reset (

control bit in

behavior of setting the EBIU pins to their inactive state. Failure to

set this bit results in the

takes the SDRAM out of self-refresh mode, resulting in data decay

in the SDRAM due to loss of refresh rate.

Powering down V

applied to the processor, external pins are maintained at a three-state level,

unless otherwise specified.

ADSP-BF537 Blackfin Processor Hardware Reference

pin. (This is the only functionality of this

pin. Set the CAN RX wakeup enable (

pin. Please see

"CAN Wakeup From Hibernate State"

for more details.

to protect against the default reset state

pin going high during reset, which

does not affect V

Dynamic Power Management

is set to 0 V, and thus