参数资料
型号: ADSP-2191MKSTZ-160
厂商: ANALOG DEVICES INC
元件分类: 数字信号处理
英文描述: 16-bit Fixed-Point DSP, 160 MIPS, 160K bytes RAM; Package: 144 ld LQFP (20x20mm); No of Pins: 144; Temperature Range: Comm.
中文描述: 16-BIT, 100 MHz, OTHER DSP, PQFP144
封装: PLASTIC, LQFP-144
文件页数: 17/48页
文件大小: 1789K
代理商: ADSP-2191MKSTZ-160
ADSP-2191M
–24–
REV. A
External Port Bus Request and Grant Cycle Timing
Table 14 and Figure 13 describe external port bus request and
bus grant operations.
Table 14. External Port Bus Request and Grant Cycle Timing
Parameter1, 2
Min
Max
Unit
Switching Characteristics
t
SD
CLKOUT High to
xMS, Address, and RD/WR Disable
0.5t
HCLK +1
ns
t
SE
CLKOUT Low to
xMS, Address, and RD/WR Enable
04ns
t
DBG
CLKOUT High to
BG Asserted Setup
0
4
ns
t
EBG
CLKOUT High to
BG Deasserted Hold Time
0
4
ns
t
DBH
CLKOUT High to
BGH Asserted Setup
0
4
ns
t
EBH
CLKOUT High to
BGH Deasserted Hold Time
04ns
Timing Requirements
t
BS
BR Asserted to CLKOUT High Setup
4.6
ns
t
BH
CLKOUT High to
BR Deasserted Hold Time
0
ns
1t
HCLK is the peripheral clock period.
2These are timing parameters that are based on worst-case operating conditions.
Figure 13. External Port Bus Request and Grant Cycle Timing
tBH
A21–0
CLKOUT
tBS
tSD
tDBG
tDBH
tSE
tEBG
tEBH
BGH
WR
RD
MS3--0
IOMS
BMS
BR
BG
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