Altera Cyclone II DSP Development Board Manuel d'utilisateur Page 74

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2–66 Reference Manual Altera Corporation
Cyclone II DSP Development Board August 2006
Power Supply
On-Board Power Regulators (U2, U7, U8, U9, U10, U23 & U24)
There are seven voltage regulators on the Cyclone II DSP development
board to control eight separate voltage rails. Two switching regulators
provide 3.3 V, 1.8 V, and 6 V. Five linear regulators provide 5 V, 1.2 V,
0.9 V, VCCA_DAC, and VCCA_ADC. Table 2–35 describes each voltage
regulator. See Figure 2–24 for the locations of the voltage regulators on
the Cyclone II DSP development board.
Table 2–35. Cyclone II DSP Development Board Regulators
Board
Reference
Type
Voltage
Output
Provides Power To Manufacturer Part Number
U2
Dual
output
switching
regulator
3.3 V
Cyclone II VCCIO banks 1, 2, 5, and 6
Clock oscillators and buffers
Expansion Prototype Connector
SSRAM
EPCS64
LEDs and seven-segment displays
DIP switches and push-buttons
Audio CODEC
Video DAC
Texas
Instruments
TPS51020
1.8 V
DDR2 SDRAM DIMM
Cyclone II VCCIO banks 3, 4, 7, and 8
TPS51020
U7
Linear
regulator
1.2 V Cyclone II VCCINT
VCCA_PLL
VCCD_PLL
UC382TD
U8
Linear
regulator
0.9 V DDR2 SDRAM VTT TPS51100
U9
Switching
regulator
6V VCCA_ADC regulator
VCCA_DAC regulator
TPS40055
U10
Linear
regulator
5V Linear 0.9V regulator
Expansion Prototype Connector card
voltage limiters
REG104GA
U23
Linear
regulator
3.3 V
5V
D/A Converter voltage REG104GA
U24
Linear
regulator
3.3 V A/D Converter voltage REG104GA
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