參數(shù)資料
型號(hào)： MN195007
廠商： PANASONIC CORP
元件分類： 數(shù)字信號(hào)處理
英文描述： 16-BIT, 24.576 MHz, OTHER DSP, PQFP100
封裝： 14 X 14 MM, 0.50 MM PITCH, PLASTIC, LQFP-100
文件頁(yè)數(shù)： 13/30頁(yè)
文件大?。?/td> 280K
代理商： MN195007
MN195007 Hardware Specifications
Panasonic Communications Co., Ltd.
-
20 -
4. Power Consumption Control
The table below lists the methods available for controlling power consumption.
No.
CLKON
pin
NRESET
pin
Status
Operable blocks
(A)
L
Power
consumption
due to internal logic
leak current
All circuits shut down
(B)
H
L
Power
consumption
due to (A) , oscillator
circuit and PLL circuit
Quartz oscillator circuit functioning
Internal PLL VCO oscillating
( PLL inoperable )
(C)
H
Normal operation
All circuits shut down
[ Table 13 ] Power Consumption Control
Power consumption increases in the order of (A) -> (B) -> (C).
Internal PLL starts operation after reset of condition (C).
When PLL becomes stable after recovering RESET, reboot the modem operation.
A control timing chart is given in Figure 2.
Note : In case Crystal Oscillator is used, there is no problem to release NRSET and CLKON
concurrently. However, in case Crystal resonator is used, NRESET should be released
after stabilizing the oscillation circuit, otherwise wrong operation may occur due to
CLKOUT signal is not stabilized. ( Oscillation circuit may stabilize after several decades
msec. Please confirm with parts supplier or actual unit )
[ Figure 2 ] Power Consumption Control Timing
NRESET
CLKON
Concurrently, or
delay CLKON
Concurrently, or delay
NRESET ( Note )
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