参数资料
型号: ADSP-21065LKCAZ240
厂商: Analog Devices Inc
文件页数: 13/44页
文件大小: 0K
描述: IC DSP CTLR 32BIT 196CSPBGA
产品培训模块: SHARC Processor Overview
标准包装: 1
系列: SHARC®
类型: 浮点
接口: 主机接口,串行端口
时钟速率: 60MHz
非易失内存: 外部
芯片上RAM: 64kB
电压 - 输入/输出: 3.30V
电压 - 核心: 3.30V
工作温度: 0°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 196-BGA,CSPBGA
供应商设备封装: 196-CSPBGA(15x15)
包装: 托盘
REV. C
ADSP-21065L
–20–
Synchronous Read/Write—Bus Slave
Use these specifications for ADSP-21065L bus master accesses of a slave’s IOP registers or internal memory (in multiprocessor
memory space). The bus master must meet these (bus slave) timing requirements.
Parameter
Min
Max
Unit
Timing Requirements:
tSADRI
Address,
SW Setup Before CLKIN
24.5 + 25 DT
ns
tHADRI
Address,
SW Hold Before CLKIN
4.0 + 8 DT
ns
tSRWLI
RD/WR Low Setup Before CLKIN1
21.0 + 21 DT
ns
tHRWLI
RD/WR Low Hold After CLKIN
–2.50 – 5 DT
7.5 + 7 DT
ns
tRWHPI
RD/WR Pulse High
2.5
ns
tSDATWH
Data Setup Before
WR High
4.5
ns
tHDATWH
Data Hold After
WR High
0.0
ns
Switching Characteristics:
tSDDATO
Data Delay After CLKIN
31.75 + 21 DT
ns
tDATTR
Data Disable After CLKIN
2
1.0 – 2 DT
7.0 – 2 DT
ns
tDACK
ACK Delay After CLKIN
29.5 + 20 DT
ns
tACKTR
ACK Disable After CLKIN
2
1.0 – 2 DT
6.0 – 2 DT
ns
NOTES
1t
SRWLI is specified when Multiprocessor Memory Space Wait State (MMSWS bit in WAIT register ) is disabled; when MMSWS is enabled, tSRWLI (min) = 17.5 + 18 DT.
2See System Hold Time Calculation under Test Conditions for calculation of hold times given capacitive and dc loads.
For two ADSP-21065Ls to communicate synchronously as master and slave, certain master and slave specification combinations
must be satisfied. Do not compare specification values directly to calculate master/slave clock skew margins for those specifications
listed below. The following table shows the appropriate clock skew margin.
Table IV. Bus Master to Slave Skew Margins
Master Specification
Slave Specification
Skew Margin
tSSDATI
tSDDATO
tCK = 33.3 ns
+ 2.25 ns
tCK = 30.0 ns
+ 1.50 ns
tSACKC
tDACK
tCK = 33.3 ns
+ 3.00 ns
tCK = 30.0 ns
+ 2.25 ns
tDADRO
tSADRI
tCK = 33.3 ns
N/A
tCK = 30.0 ns
+ 2.75 ns
tDRWL (Max)
tSRWLI
tCK = 33.3 ns
+ 1.50 ns
tCK = 30.0 ns
+ 1.25 ns
tDRDO (Max)
tHRWLI (Max)
tCK = 33.3 ns
N/A
tCK = 30.0 ns
3.00 ns
tDWRO (Max)
tHRWLI (Max)
tCK = 33.3 ns
N/A
tCK = 30.0 ns
3.75 ns
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