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MOTOROLA MSC8101ADS RevB User’s Manual 65
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)V
logic
bus
FIGURE 7-1 ADS Power Scheme
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-
3.3+-10%V
0.9-2.2.V
5V
MSC8101
QVCC
VCCSYN
ADS Logic & Peripherals
NVCC
Expansion Con.
1V5CR
VCCSYN1
5V0
3V3
P26
JS3
JS2
3V3IO
1V5
JS5
JS4
JS1
QHCC
F1
4A
JP3
CODEC
5VExt
P1
Frees
cale Semiconductor,
I
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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