Nortel Networks MSC8101 ADS Manual De Usuario
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
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
3.3+-10%V
0.9-2.2.V
5V
MSC8101
QVCC
VCCSYN
ADS Logic & Peripherals
NVCC
Expan
sion Con.
1V5C
R
VCCSYN1
5V0
3V3
P26
JS3
JS2
3V3IO
1V5
JS5
JS4
JS1
QHCC
F1
4A
JP3
CODEC
5VExt
P1
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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