TDA5051AT/C1,518 데이터 시트보기 (PDF) - NXP Semiconductors.
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TDA5051AT/C1,518 Datasheet PDF : 29 Pages
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NXP Semiconductors
11. Timing
11.1 Configuration for clock
TDA5051A
Home automation modem
XTAL
CLK_OUT
MICROCONTROLLER
GND
For parameter description, see Table 6.
Fig 6. External clock
OSC1 7
fosc
TDA5051A
DGND 5
002aaf042
TDA5051A
Product data sheet
CLK_OUT
MICROCONTROLLER
GND
CLK_OUT 4
1/2 fosc
8 OSC2
TDA5051A
Rp
DGND 5
7 OSC1
For parameter description, see Table 6.
Fig 7. Typical configuration for on-chip clock circuit
C1
XTAL
C2
002aaf043
Table 6. Clock oscillator parameters
Oscillator
frequency fosc
6.080 MHz to
9.504 MHz
Carrier
frequency fcr
95 kHz to
148.5 kHz
Clock output frequency
1⁄2fosc
3.040 MHz to 4.752 MHz
External components
C1 = C2 = 27 pF to 47 pF;
Rp = 2.2 MΩ to 4.7 MΩ;
XTAL = standard quartz crystal
Table 7.
Symbol
fosc
fCLKOUT
fcr
tsu
th
tW(DI)(min)
Calculation of parameters depending on the clock frequency
Parameter
Conditions
oscillator frequency
with on-chip oscillator: frequency of
the crystal quartz
with external clock: frequency of the
signal applied at OSC1
clock output frequency
carrier frequency/digital filter tuning
frequency
1⁄2fosc
1⁄64fosc
set-up time of the shaped burst
hold time of the shaped burst
minimum pulse width of DATA_IN
signal
23/fcr or 1472/fosc
23/fcr or 1472/fosc
tsu + 1/fcr
Unit
Hz
Hz
Hz
Hz
s
s
s
All information provided in this document is subject to legal disclaimers.
Rev. 5 — 13 January 2011
© NXP B.V. 2011. All rights reserved.
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