MSP3400C View Datasheet(PDF) - Micronas
Part Name
Description
MFG CO.
'MSP3400C' PDF : 73 Pages View PDF
MSP 3400C
PRELIMINARY DATA SHEET
6.2.5. DCO-Increments
For a chosen TV standard, a corresponding set of 24-bit
increments determining the mixing frequencies of the
quadrature mixers, has to be written into the IC. In Table
6–11, several examples of DCO increments are listed.
It is necessary to divide them into low part and high part.
The formula for the calculation of the increments for any
chosen IF-Frequency is as follows:
INCRdez = int(f/fs ⋅ 224)
with: int = integer function
f = IF-frequency in MHz
fS = sampling frequency (18.432 MHz)
Conversion of INCR into hex-format and separation of
the 12-bit low and high parts lead to the required incre-
ments. (DCO1_HI or _LO for channel 1, DCO2_HI or LO
for channel 2).
Table 6–11: DCO increments for the MSP 3400C; frequency in MHz, increments in Hex
Frq. MHz
4.5
5.04
5.5
5.58
5.7421875
6.0
6.2
6.5
6.552
7.02
7.38
DCO_HI
03E8
0460
04C6
04D8
04FC
0535
0561
05A4
05B0
0618
0668
DCO_LO
0000
0000
038E
0000
00AA
0555
0C71
071C
0000
0000
0000
Frq. MHz DCO_HI
5.76
0500
5.85
0514
5.94
0528
6.6
05BA
6.65
05C5
6.8
05E7
7.2
0640
7.56
0690
DCO_LO
0000
0000
0000
0AAA
0C71
01C7
0000
0000
26
MICRONAS INTERMETALL
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