Datasheet

Rev. D | Page 27 of 88 | July 2013
ADSP-BF522/ADSP-BF523/ADSP-BF524/ADSP-BF525/ADSP-BF526/ADSP-BF527
Power Supplies ALL SUPPLIES MUST BE POWERED
See Operating Conditions for ADSP-BF523/ADSP-BF525/ADSP-BF527
Processors on Page 30, and see Operating Conditions for ADSP-BF522/
ADSP-BF524/ADSP-BF526 Processors on Page 28.
V
DDEXT
PI/O Power Supply
V
DDINT
P Internal Power Supply
V
DDRTC
P Real Time Clock Power Supply
V
DDUSB
P 3.3 V USB Phy Power Supply
V
DDMEM
PMEM Power Supply
V
DDOTP
POTP Power Supply
V
PPOTP
P OTP Programming Voltage
GND G Ground for All Supplies
1
See Output Drive Currents on Page 73 for more information about each driver type.
2
HWAIT must be pulled high or low to configure polarity. It is driven as an output and toggle during processor boot. See Booting Modes on Page 18.
3
When driven low, this ball can be used to wake up the processor from the hibernate state, either in normal GPIO mode or in Ethernet mode as MII PHYINT. If the ball is
used for wake up, enable the feature with the PHYWE bit in the VR_CTL register, and pull-up the ball with a resistor.
4
Consult version 2.1 of the I
2
C specification for the proper resistor value.
Table 10. Signal Descriptions (Continued)
Signal Name Type Function
Driver
Type
1