參數(shù)資料
型號: SPAKDSP321VL240
廠商: Freescale Semiconductor
文件頁數(shù): 18/84頁
文件大小: 0K
描述: IC DSP 24BIT 240MHZ 196-MAPBGA
標(biāo)準(zhǔn)包裝: 2
系列: DSP56K/Symphony
類型: 定點(diǎn)
接口: 主機(jī)接口,SSI,SCI
時(shí)鐘速率: 240MHz
非易失內(nèi)存: ROM(576 B)
芯片上RAM: 576kB
電壓 - 輸入/輸出: 3.30V
電壓 - 核心: 1.60V
工作溫度: -40°C ~ 100°C
安裝類型: 表面貼裝
封裝/外殼: 196-LBGA
供應(yīng)商設(shè)備封裝: 196-MAPBGA(15x15)
包裝: 托盤
AC Electrical Characteristics
DSP56321 Technical Data, Rev. 11
Freescale Semiconductor
2-5
Note:
If an externally-supplied square wave voltage source is used, disable the internal oscillator circuit after
boot-up by setting XTLD (PCTL Register bit 2 = 1—see the DSP56321 Reference Manual). The external
square wave source connects to EXTAL and XTAL is not used. Figure 2-2 shows the EXTAL input signal.
2.4.3
Clock Generator (CLKGEN) and Digital PLL (DPLL)
Characteristics
4
EXTAL cycle time3
With DPLL disabled
With DPLL enabled
ETC
5.0 ns
62.5 ns
4.55 ns
62.5 ns
4.17 ns
62.5 ns
3.64 ns
62.5 ns
7
Instruction cycle time =
ICYC = ETC
With DPLL disabled
With DPLL enabled
ICYC
10 ns
5.0 ns
1.6
s
9.09 ns
4.55 ns
1.6
s
8.33 ns
4.17 ns
1.6
s
7.28 ns
3.64 ns
1.6
s
Notes:
1.
The rise and fall time of this external clock should be 2 ns maximum.
2.
Refer to Table 2-6 for a description of PDF and PDFR.
3.
Measured at 50 percent of the input transition.
4.
The indicated duty cycle is for the specified maximum frequency for which a part is rated. The minimum clock high or low time
required for correction operation, however, remains the same at lower operating frequencies; therefore, when a lower clock
frequency is used, the signal symmetry may vary from the specified duty cycle as long as the minimum high time and low time
requirements are met.
Figure 2-2.
External Input Clock Timing
Table 2-6.
CLKGEN and DPLL Characteristics
Characteristics
Symbol
200 MHz
220 MHz
240 MHz
275 MHz
Unit
Min
Max
Min
Max
Min
Max
Min
Max
Predivision factor
PDF1
116
1
16116
1
16
Predivider output clock frequency range
PDFR
16
32
16
32
16
32
16
32
MHz
Total multiplication factor
2
MF
515
5
15515
5
15
Multiplication factor integer part
MFI1
515
5
15515
5
15
Multiplication factor numerator3
MFN
0
1270127
01270127
Multiplication factor denominator
MFD
1
128
1
128
1
128
1
128
Double clock frequency range
DDFR
160
400
160
440
160
480
160
550
MHz
Phase lock-in time4
DPLT
6.85
1506
6.85
1506
6.85
1506
6.85
1506
s
Table 2-5.
External Clock Operation (Continued)
No.
Characteristics
Symbol
200 MHz
220 MHz
240 MHz
275 MHz
Min
Max
Min
Max
Min
Max
Min
Max
EXTAL
VILX
VIHX
Midpoint
Note:
The midpoint is 0.5 (VIHX + VILX).
ETH
ETL
ETC
3
4
2
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