MSP3405D Datasheet, PDF (60/71 Pages) List of Unclassifed Manufacturers – Multistandard Sound Processors

MSP 34x5D
PRELIMINARY DATA SHEET
Symbol
Parameter
Pin Name
Min. Typ. Max. Unit
General Crystal Recommendations
f_P
Crystal Parallel Resonance Fre-
quency at 12 pF Load Capacitance
R_R
Crystal Series Resistance
C₀
Crystal Shunt
(Parallel) Capacitance
C_L
External Load Capacitance¹⁾
XTAL_IN,
XTAL_OUT
18.432
8
25
6.2
7.0
PSDIP
1.5
PLCC
3.3
P(M)QFP 3.3
MHz
Ω
pF
pF
pF
pF
Crystal Recommendations for Master-Slave Applications
f_TOL
D_TEM
C₁
f_CL
Accuracy of Adjustment
Frequency Variation vs Temp.
Motional (Dynamic) Capacitance
Required Open Loop Clock
Frequency (T_amb = 25 °C)
XTAL_IN,
XTAL_OUT
–20
–20
19
24
18.431
+20
+20
18.433
Crystal Recommendations for FM / NICAM Applications (No Master-Slave Mode possible)
f_TOL
D_TEM
C₁
f_CL
Accuracy of Adjustment
Frequency Variation vs Temp.
Motional (Dynamic) Capacitance
Required Open Loop Clock
Frequency (T_amb = 25 °C)
XTAL_IN,
XTAL_OUT
–30
–30
15
18.4305
+30
+30
18.4335
Crystal Recommendations for FM Applications (No Master-Slave Mode possible)
f_TOL
D_TEM
Accuracy of Adjustment
Frequency Variation versus
Temperature
–100
–50
+100
+50
ppm
ppm
fF
MHz
ppm
ppm
fF
MHz
ppm
ppm
Amplitude Recommendation for Operation with External Clock Input (C_load after reset = 22 pF)
V_XCA
External Clock Amplitude
XTAL_IN
0.7
V_pp
1) _{External capacitors at each crystal pin to ground are required. They are necessary to tune the open-loop fre-}
quency of the internal PLL and to stabilize the frequency in closed-loop operation.
Due to different layouts, the accurate capacitor size should be determined with the customer PCB. The sug-
gested values (1.5...3.3 pF) are figures based on experience and should serve as “start value”.
To define the capacitor size, reset the MSP without transmitting any further I²C telegrams. Set MODE_REG
0083_hex Bit [14]=1. Measure the frequency at pin TP_CO (see pin description in table on page 51). Change the
capacitor size until the free running frequency at pin TP_CO matches 6.144000 MHz (=18.432000 MHz / 3) as
closely as possible. The higher the capacity, the lower the resulting clock frequency.
60
Micronas