参数资料
型号: ADSP-21366BSWZ-1AA
厂商: Analog Devices Inc
文件页数: 19/60页
文件大小: 0K
描述: IC DSP 32BIT 333MHZ EPAD 144LQFP
产品培训模块: SHARC Processor Overview
标准包装: 1
系列: SHARC®
类型: 浮点
接口: DAI,SPI
时钟速率: 333MHz
非易失内存: ROM(512 kB)
芯片上RAM: 384kB
电压 - 输入/输出: 3.30V
电压 - 核心: 1.20V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 144-LQFP 裸露焊盘
供应商设备封装: 144-LQFP(20x20)
包装: 托盘
ADSP-21362/ADSP-21363/ADSP-21364/ADSP-21365/ADSP-21366
Clock Input
Table 11. Clock Input
200 MHz 1
333 MHz 2
Parameter
Min
Max
Min
Max
Unit
Timing Requirements
t CK
CLKIN Period
30 3
100
18
100
ns
t CKL
t CKH
t CKRF
CLKIN Width Low
CLKIN Width High
CLKIN Rise/Fall (0.4 V to 2.0 V)
12.5
12.5
3
7.5
7.5
3
ns
ns
ns
t CCLK 4
t VCO 5
t CKJ 6, 7
CCLK Period
VCO Frequency
CLKIN Jitter Tolerance
5.0
200
–250
10
600
+250
3.0
200
–250
10
800
+250
ns
MHz
ps
1
2
3
4
5
6
7
Applies to all 200 MHz models. See Ordering Guide on Page 56 .
Applies to all 333 MHz models. See Ordering Guide on Page 56 .
Applies only for CLK_CFG1–0 = 00 and default values for PLL control bits in the PMCTL register.
Any changes to PLL control bits in the PMCTL register must meet core clock timing specification t CCLK .
See Figure 5 on Page 17 for VCO diagram.
Actual input jitter should be combined with AC specifications for accurate timing analysis.
Jitter specification is maximum peak-to-peak time interval error (TIE) jitter.
CLKIN
t CKH
t CK
t CKL
t CKJ
Figure 7. Clock Input
Clock Signals
The processor can use an external clock or a crystal. Refer to the
CLKIN pin description in Table 6 on Page 11 . The user applica-
ADSP-2136x
tion program can configure the processor to use its internal
clock generator by connecting the necessary components to the
CLKIN and XTAL pins. Figure 8 shows the component connec-
tions used for a fundamental frequency crystal operating in
parallel mode.
Note that the clock rate is achieved using a 16.67 MHz crystal
CLKIN
C1
22pF
R1
1M Ω *
Y1
24.576MHz
XTAL
R2
47 Ω *
C2
22pF
and a PLL multiplier ratio 16:1. (CCLK:CLKIN achieves a clock
speed of 266.72 MHz.) To achieve the full core clock rate, pro-
grams need to configure the multiplier bits in the
PMCTL register.
R2 SHOULD BE CHOSEN TO LIMIT CRYSTAL
DRIVE POWER. REFER TO CRYSTAL
MANUFACTURER’S SPECIFICATIONS.
*TYPICAL VALUES
Figure 8. Recommended Circuit for Fundamental Mode Crystal Operation
Rev. J |
Page 19 of 60 |
July 2013
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