SMJ320C6414 Datasheet, PDF (68/133 Pages) Texas Instruments – FIXED-POINT DIGITAL SIGNAL PROCESSORS

SMJ320C6414, SMJ320C6415, SMJ320C6416
FIXEDĆPOINT DIGITAL SIGNAL PROCESSORS
SGUS050A − JANUARY 2004 − REVISED MARCH 2004
clock PLL (continued)
3.3 V
EMI
filter
C1 C2
10 µF 0.1 µF
PLLV
CLKMODE0
CLKMODE1
CLKIN
PLLMULT
PLL
x6, x12
PLLCLK 1
0
CPU Clock
/2
Peripheral Bus
/8
Timer Internal Clock
/4
CLKOUT4,
McBSP Internal Clock
/6
CLKOUT6
00 01 10
ECLKIN_SEL (DEVCFG.[17,16]
and DEVCFG.[15,14])
/4
ECLKIN
Internal to C64x
/2
EMIF
00 01 10
EK2RATE
(GBLCTL.[19,18])
(For the PLL Options, CLKMODE Pins Setup, and
PLL Clock Frequency Ranges, see Table 32.)
ECLKOUT1 ECLKOUT2
NOTES: A. Place all PLL external components (C1, C2, and the EMI Filter) as close to the C6000 DSP device as possible. For the best
performance, TI recommends that all the PLL external components be on a single side of the board without jumpers, switches, or
components other than the ones shown.
B. For reduced PLL jitter, maximize the spacing between switching signals and the PLL external components (C1, C2, and the EMI
Filter).
C. The 3.3-V supply for the EMI filter must be from the same 3.3-V power plane supplying the I/O voltage, DVDD.
D. EMI filter manufacturer TDK part number ACF451832-333, -223, -153, -103. Panasonic part number EXCCET103U.
Figure 5. External PLL Circuitry for Either PLL Multiply Modes or x1 (Bypass) Mode
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