The product of CLKIN and PLLM must never exceed f
參數(shù)資料
型號: ADSP-21369KSWZ-5A
廠商: Analog Devices Inc
文件頁數(shù): 11/64頁
文件大小: 0K
描述: IC DSP 32BIT 366MHZ 208LQFP
標準包裝: 1
系列: SHARC®
類型: 浮點
接口: DAI,DPI
時鐘速率: 366MHz
非易失內(nèi)存: ROM(768 kB)
芯片上RAM: 256kB
電壓 - 輸入/輸出: 3.30V
電壓 - 核心: 1.20V
工作溫度: 0°C ~ 70°C
安裝類型: 表面貼裝
封裝/外殼: 208-LQFP 裸露焊盤
供應(yīng)商設(shè)備封裝: 208-LQFP-EP(28x28)
包裝: 托盤
Rev. F
|
Page 19 of 64
|
October 2013
The product of CLKIN and PLLM must never exceed fVCO
(max) in Table 13 if the input divider is enabled
(INDIV = 1).
The VCO frequency is calculated as follows:
fVCO = 2 PLLM fINPUT
fCCLK = (2 PLLM fINPUT) (2 PLLD)
where:
fVCO = VCO output
PLLM = Multiplier value programmed in the PMCTL register.
During reset, the PLLM value is derived from the ratio selected
using the CLK_CFG pins in hardware.
PLLD = Divider value 1, 2, 4, or 8 based on the PLLD value pro-
grammed on the PMCTL register. During reset this value is 1.
fINPUT = Input frequency to the PLL.
fINPUT = CLKIN when the input divider is disabled or
fINPUT = CLKIN 2 when the input divider is enabled
Note the definitions of the clock periods that are a function of
CLKIN and the appropriate ratio control shown in and
Table 11. All of the timing specifications for the ADSP-2136x
peripherals are defined in relation to t
PCLK. See the peripheral spe-
cific timing section for each peripheral’s timing information.
Figure 5 shows core to CLKIN relationships with external oscil-
lator or crystal. The shaded divider/multiplier blocks denote
where clock ratios can be set through hardware or software
using the power management control register (PMCTL). For
more information, see the processor hardware reference.
Table 11. Clock Periods
Timing
Requirements
Description
t
CK
CLKIN Clock Period
t
CCLK
Processor Core Clock Period
t
PCLK
Peripheral Clock Period = 2 × t
CCLK
Figure 5. Core Clock and System Clock Relationship to CLKIN
LOOP
FILTER
CLKIN
PCLK
SDCLK
SDRAM
DIVIDER
PMCTL
(PLLBP)
B
Y
P
A
S
M
U
X
DIVIDE
BY 2
PMCTL
(SDCKR)
CCLK
B
Y
P
A
S
M
U
X
PLL
XTAL
CLKIN
DIVIDER
PLL
MULTIPLIER
BUF
VCO
BUF
PMCTL
(INDIV)
PLL
DIVIDER
CLK_CFGx/PMCTL (2xPLLM)
P
IN
M
U
X
CLKOUT (TESTONLY)
DELAY OF
4096 CLKIN
CYCLES
CCLK
PCLK
PMCTL
(PLLBP)
PMCTL
(2xPLLD)
fVCO
fCCLK
fINPUT
相關(guān)PDF資料
PDF描述
TAP106M035BRW CAP TANT 10UF 35V 20% RADIAL
XC2C384-10FGG324C IC CR-II CPLD 384MCELL 324-FBGA
HMM28DSAI CONN EDGECARD 56POS R/A .156 SLD
ADSP-21369KBPZ-2A IC DSP 32BIT 333MHZ 256-BGA
VE-21M-CY-F1 CONVERTER MOD DC/DC 10V 50W
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ADSP-21369KSWZ-6A 功能描述:IC DSP 32BIT 400MHZ 208-LQFP 制造商:analog devices inc. 系列:SHARC? 包裝:托盤 零件狀態(tài):有效 類型:浮點 接口:DAI,DPI 時鐘速率:400MHz 非易失性存儲器:ROM(768 kB) 片載 RAM:256KB 電壓 - I/O:3.30V 電壓 - 內(nèi)核:1.20V 工作溫度:0°C ~ 70°C(TA) 安裝類型:表面貼裝 封裝/外殼:208-LQFP 裸露焊盤 供應(yīng)商器件封裝:208-LQFP-EP(28x28) 標準包裝:1
ADSP-21369KSZ-1A 制造商:Analog Devices 功能描述:DSP Floating-Point 32-Bit/40-Bit 266MHz 266MIPS 208-Pin MQFP 制造商:Analog Devices 功能描述:PROCESSOR ((NS))
ADSP-21369KSZ-1A 制造商:Analog Devices 功能描述:DSP PROCESSOR ((NS))
ADSP-21371 制造商:AD 制造商全稱:Analog Devices 功能描述:SHARC Processor optimized for high performance audio processing
ADSP-21371_07 制造商:AD 制造商全稱:Analog Devices 功能描述:SHARC㈢ Processor