TMS320VC5402 datasheet(36/68 Pages) TI

tên linh kiện	TMS320VC5402

Giải thích chi tiết về linh kiện	FIXED-POINT DIGITAL SIGNAL PROCESSOR

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TMS320VC5402

FIXEDPOINT DIGITAL SIGNAL PROCESSOR

SPRS079E – OCTOBER 1998 – REVISED AUGUST 2000

POST OFFICE BOX 1443

• HOUSTON, TEXAS 77251–1443

internal oscillator with external crystal

The internal oscillator is enabled by connecting a crystal across X1 and X2/CLKIN. The frequency of CLKOUT

is a multiple of the oscillator frequency. The multiply ratio is determined by the bit settings in the CLKMD register.

The crystal should be in fundamental-mode operation, and parallel resonant, with an effective series resistance

of 30

Ω and power dissipation of 1 mW.

The connection of the required circuit, consisting of the crystal and two load capacitors, is shown in Figure 10.

The load capacitors, C1 and C2, should be chosen such that the equation below is satisfied. CL in the equation

is the load specified for the crystal.

1C2

(

) C

recommended operating conditions of internal oscillator with external crystal (see Figure 10)

MIN

MAX

UNIT

fclock

Input clock frequency

MHz

X2/CLKIN

Crystal

Figure 10. Internal Oscillator With External Crystal

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