DSP56600FMSLASHAD datasheet(47/76 Pages) NXP

47 / 76 page

DSP56652

Internal Clocks

Preliminary

MOTOROLA

DSP56652 Technical Data Sheet

2-5

INTERNAL CLOCKS

For each occurrence of TDH, TDL, TDC, or IDCYC, substitute with the numbers in

Table 2-6

. DF, MF, and PDF are the DSP PLL division, multiplication, and pre-

division factors set in registers.

Table 2-5

DSP Clocks

Characteristics

Symbol

Min

Max

Unit

Input frequency to the DSP PLL

EfD

16.8

MHz

DSP PLL input clock cycle time

¥ with PLL disabled

¥ with PLL enabled

ETDC

59.5

273100

Table 2-6

Internal DSP Clocks

Characteristics

Symbol

Expression

Internal DSP operation frequency with PLL enabled

(EfD

´ MF) / (PDF ´ DF)

Internal DSP operation frequency with PLL

disabled

EfD/2

Internal DSP clock high period

¥ with PLL disabled

¥ with PLL enabled and MF

£ 4

¥ with PLL enabled and MF > 4

TDH

ETDC

(Min) 0.49

´ ETDC ´ PDF ´ DF/MF

(Max) 0.51

´ ETDC ´ PDF ´ DF/MF

(Min) 0.47

´ ETDC ´ PDF ´ DF/MF

(Max) 0.53

´ ETDC ´ PDF ´ DF/MF

Internal clock low period

¥ with PLL disabled

¥ with PLL enabled and MF

£ 4

¥ with PLL enabled and MF > 4

TDL

ETDC

(Min) 0.49

´ ETDC ´ PDF ´ DF/MF

(Max) 0.51

´ ETDC ´ PDF ´ DF/MF

(Min) 0.47

´ ETDC ´ PDF ´ DF/MF

(Max) 0.53

´ ETDC ´ PDF ´ DF/MF

Internal clock cycle time with PLL enabled

TDC

ETDC ´ PDF ´ DF/MF

Internal clock cycle time with PLL disabled

TDC

´ ETDC

DSP Instruction cycle time

IDCYC

TDC

Table 2-7

MCU Clocks

Characteristics

Symbol

Min

Max

Unit

Frequency of the internal MCU-CLK clock

16.8

MHz

Internal MCU-CLK clock cycle time

TMC

59.5

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

DSP56600FM/AD bảng dữ liệu(PDF) 47 Page - NXP Semiconductors

DSP56600FM/AD bảng dữ liệu(HTML) 47 Page - NXP Semiconductors

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76

bảng dữ liệu tải về

Link URL