Power Supply; Schematic Diagram Of The Power Supply - Motorola DSP56852 User Manual

2.11 Power Supply

The main power input, +12.0V DC/AC, to the DSP56852EVM is through a 2.1mm coax
power jack. An optional +5.0V DC power supply input is available through a 2-pin
terminal block, TB1. A +12.0V DC 1.2A power supply is provided with the
DSP56852EVM; however, less than 500mA is required by the EVM. The remaining
current is available for user daughter card applications when connected to the daughter
card interface. The power regulation on the DSP56852EVM provides +5.0V DC voltage
regulation for the codec's analog circuits and to the additonal voltage regulation logic on
the EVM. The additonal voltage regulation logic provides +1.8V DC voltage regulation
for the DSP's core and +3.3V DC voltage regulation for the DSP's I/O, memory, parallel
JTAG interface and supporting logic; refer to
DSP56852EVM is indicated with a Power-On LED, referenced as LED7.
P2
+12.0V DC
TB1
+5.0V DC
GND
Figure 2-10. Schematic Diagram of the Power Supply
2-14
Freescale Semiconductor, Inc.
Power
+5.0V
Condition
Regulator
+3.3V
Regulator
+1.8V
Regulator
DSP56852EVM User's Manual
For More Information On This Product,
Go to: www.freescale.com
Figure 2-10. Power applied to the
+5.0V DC
CODEC
Analog
+3.3V DC
DSP56852
DSP56852EVM
DSP56852
+1.8V DC
PARTS
CORE
MOTOROLA