参数资料
型号: ADSP-21992YBC
厂商: Analog Devices Inc
文件页数: 33/60页
文件大小: 0K
描述: IC DSP CTLR 16BIT 196CSPBGA
标准包装: 1
系列: ADSP-21xx
类型: 定点
接口: SPI,SSP
时钟速率: 150MHz
非易失内存: 外部
芯片上RAM: 128kB
电压 - 输入/输出: 3.30V
电压 - 核心: 2.50V
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 196-BGA
供应商设备封装: 196-MBGA(15x15)
包装: 托盘
ADSP-21992
Rev. A
|
Page 39 of 60
|
August 2007
External Port Bus Request/Grant Cycle Timing
Table 22 and Figure 12 describe external port bus request and
bus grant operations.
Table 22. External Port Bus Request and Grant Cycle Timing
Parameter1, 2
Min
Max
Unit
Timing Requirements
tBS
BR Asserted to CLKOUT High Setup
4.6
ns
tBH
CLKOUT High to BR Deasserted Hold Time
0
ns
Switching Characteristics
tSD
CLKOUT High to xMS, Address, and RD/WR Disable
0.5tHCLK + 1
ns
tSE
CLKOUT Low to xMS, Address, and RD/WR Enable
04ns
tDBG
CLKOUT High to BG Asserted Setup
0
4
ns
tEBG
CLKOUT High to BG Deasserted Hold Time
0
4
ns
tDBH
CLKOUT High to BGH Asserted Setup
0
4
ns
tEBH
CLKOUT High to BGH Deasserted Hold Time
0
4
ns
1 tHCLK is the peripheral clock period.
2 These are timing parameters that are based on worst-case operating conditions.
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