Freescale Semiconductor, Inc.

Freescale Semiconductor, Inc.

Power

7 - Power

7•1 Power rails.

There 3 power buses with the MSC8101: 1)I/O -3.3V nominal 1)Internal Logic - 1.5V nominal. 2)PLL - 1.5V nominal.

and there are 3 power buses on the MSC8101ADS: 1)5V bus

2)3.3V bus 3)Vlogic bus

FIGURE 7-1 ADS Power Scheme

ADS Logic & Peripherals

P1

 

 

CODEC

5VExt

JP3

 

 

Con.

 

 

 

 

 

 

 

5V0

 

 

 

 

 

 

 

 

 

 

 

Expansion

 

3.3+-10%V

 

3V3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

F1

 

JS4

JS5

JS3

 

 

 

4A

1V5

 

 

 

0.9-2.2.V

 

 

 

 

JS1

 

 

 

 

1V5CR

JS2

 

 

 

 

 

5V

P26

 

 

 

3V3IO

 

 

 

 

 

 

 

VCCSYN VCCSYN1 QVCC NVCC QHCC

MSC8101

To support off-board application development, two of the power buses are connected to the ex- pansion connectors, so that external logic may be powered directly from the board. The maximum current allowed to be drawn from the board on each bus is shown in TABLE 7-1."Off-Board Appli-

MOTOROLA

MSC8101ADS RevB User’s Manual

65

For More Information On This Product,

Go to: www.freescale.com

Page 65
Image 65
Nortel Networks MSC8101 ADS user manual Power rails, ADS Power Scheme