参数资料
型号: ADSP-21060LABZ-160
厂商: Analog Devices Inc
文件页数: 26/64页
文件大小: 0K
描述: IC DSP CONTROLLER 32BIT 225-BGA
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,连接端口,串行端口
时钟速率: 40MHz
非易失内存: 外部
芯片上RAM: 512kB
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: 225-BBGA
供应商设备封装: 225-PBGA
包装: 托盘
Rev. F
|
Page 32 of 64
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March 2008
ADSP-21060/ADSP-21060L/ADSP-21062/ADSP-21062L/ADSP-21060C/ADSP-21060LC
Asynchronous Read/Write—Host to ADSP-2106x
Use these specifications for asynchronous host processor
accesses of an ADSP-2106x, after the host has asserted CS and
HBR (low). After HBG is returned by the ADSP-2106x, the host
can drive the RD and WR pins to access the ADSP-2106x’s
internal memory or IOP registers. HBR and HBG are assumed
low for this timing. Not required if and address are valid tHBGRCSV
after goes low. For first access after asserted, ADDR31–0 must
be a non-MMS value 1/2 tCLK before or goes low or by tHBGRCSV
after goes low. This is easily accomplished by driving an upper
address signal high when is asserted. See the “Host Processor
Control of the ADSP-2106x” section in the ADSP-2106x
SHARC User’s Manual, Revision 2.1.
Table 19. Read Cycle
5 V and 3.3 V
Unit
Parameter
Min
Max
Timing Requirements
tSADRDL
Address Setup/CS Low Before RD Low1
0ns
tHADRDH
Address Hold/CS Hold Low After RD
0ns
tWRWH
RD/WR High Width
6
ns
tDRDHRDY
RD High Delay After REDY (O/D) Disable
0
ns
tDRDHRDY
RD High Delay After REDY (A/D) Disable
0
ns
Switching Characteristics
tSDATRDY
Data Valid Before REDY Disable from Low
2
ns
tDRDYRDL
REDY (O/D) or (A/D) Low Delay After RD Low2
10
ns
tRDYPRD
REDY (O/D) or (A/D) Low Pulse Width for Read
45 + 21DT/16
ns
tHDARWH
Data Disable After RD High3
28
ns
1 Not required if RD and address are valid t
HBGRCSV after HBG goes low. For first access after HBR asserted, ADDR31-0 must be a non-MMS value 1/2 tCLK before RD or WR goes
low or by tHBGRCSV after HBG goes low. This is easily accomplished by driving an upper address signal high when HBG is asserted. See the “Host Processor Control of the
ADSP-2106x” section in the ADSP-2106x SHARC User’s Manual, Revision 2.1.
2 For ADSP-21060L, specification is 10.5 ns max; for ADSP-21060LC, specification is 12.5 ns max.
3 For ADSP-21060L/ADSP-21060LC, specification is 2 ns min, 8.5 ns max.
Table 20. Write Cycle
5 V and 3.3 V
Unit
Parameter
Min
Max
Timing Requirements
tSCSWRL
CS Low Setup Before WR Low
0
ns
tHCSWRH
CS Low Hold After WR High
0
ns
tSADWRH
Address Setup Before WR High
5
ns
tHADWRH
Address Hold After WR High
2
ns
tWWRL
WR Low Width
7
ns
tWRWH
RD/WR High Width
6
ns
tDWRHRDY
WR High Delay After REDY (O/D) or (A/D) Disable
0
ns
tSDATWH
Data Setup Before WR High
5
ns
tHDATWH
Data Hold After WR High
1
ns
Switching Characteristics
tDRDYWRL
REDY (O/D) or (A/D) Low Delay After WR/CS Low
10
ns
tRDYPWR
REDY (O/D) or (A/D) Low Pulse Width for Write
15 + 7DT/16
ns
tSRDYCK
REDY (O/D) or (A/D) Disable to CLKIN
1 + 7DT/16
8 + 7DT/16
ns
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