参数资料
型号: DSPB56362AG120
厂商: Freescale Semiconductor
文件页数: 79/152页
文件大小: 0K
描述: IC DSP 24BIT AUD 120MHZ 144-LQFP
标准包装: 60
系列: DSP56K/Symphony
类型: 音频处理器
接口: 主机接口,I²C,SAI,SPI
时钟速率: 120MHz
非易失内存: ROM(126 kB)
芯片上RAM: 42kB
电压 - 输入/输出: 3.30V
电压 - 核心: 3.30V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 144-LQFP
供应商设备封装: 144-LQFP(20x20)
包装: 托盘
Phase Lock Loop (PLL) Characteristics
DSP56362 Technical Data, Rev. 4
3-6
Freescale Semiconductor
3.8
Phase Lock Loop (PLL) Characteristics
6
CLKOUT rising edge from EXTAL rising edge with PLL
enabled (MF = 1, PDF = 1, Ef > 15 MHz)4, 5
CLKOUT falling edge from EXTAL rising edge with PLL
enabled (MF = 2 or 4, PDF = 1, Ef > 15 MHz)4, 5
CLKOUT falling edge from EXTAL falling edge with PLL
enabled (MF
≤ 4, PDF ≠ 1, Ef / PDF > 15 MHz)4, 5
0.0 ns
1.8 ns
7
Instruction cycle time = ICYC = TC
6
See
Table 3-5 (46.7%–53.3% duty cycle)
With PLL disabled
With PLL enabled
ICYC
0.00 ns
8.53
s
8.53
s
1 Measured at 50% of the input transition.
2 The maximum value for PLL enabled is given for minimum V
CO and maximum MF.
3 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.
4 Periodically sampled and not 100% tested.
5 The skew is not guaranteed for any other MF value.
6 The maximum value for PLL enabled is given for minimum V
CO and maximum DF.
Table 3-6 PLL Characteristics
Characteristics
100 MHz
Unit
Min
Max
VCO frequency when PLL enabled (MF × Ef × 2/PDF)
30
200
MHz
PLL external capacitor (PCAP pin to VCCP) (CPCAP)
1
@ MF
≤ 4
@ MF > 4
1 CPCAP is the value of the PLL capacitor (connected between the PCAP pin and VCCP). The recommended value in pF for
CPCAP can be computed from one of the following equations:
(680
× MF) – 120, for MF ≤ 4, or
1100
× MF, for MF > 4
(MF
× 580) 100
MF
× 830
(MF
× 780) 140
MF
× 1470
pF
Note:
Table 3-5 Clock Operation (continued) 100 and 120 MHz Values
No.
Characteristics
Symbol
100 MHz
120 MHz
Min
Max
Min
Max
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