ADSP-BF538 AD [Analog Devices], ADSP-BF538 Datasheet - Page 31

• Manufacturer Part Number: ADSP-BF538
• Description: Blackfin Embedded Processor
• Manufacturer: AD [Analog Devices]

Preliminary Technical Data
Table 22. External Port Bus Request and Grant Cycle Timing with Asynchronous BR
Parameter
Timing Requirements
t
Switching Characteristics
t
t
t
t
t
t
WBR
SD
SE
DBG
EBG
DBH
EBH
ARE
BR
AMSx
BGH
CLKOUT
ABE1-0
BG
ADDR19-1
AWE
BR Pulsewidth
CLKOUT Low to xMS, Address, and RD/WR disable
CLKOUT Low to xMS, Address, and RD/WR enable
CLKOUT High to BG High Setup
CLKOUT High to BG Deasserted Hold Time
CLKOUT High to BGH High Setup
CLKOUT High to BGH Deasserted Hold Time
Figure 17. External Port Bus Request and Grant Cycle Timing with Asynchronous BR
t
WBR
Rev. PrD | Page 31 of 56 | May 2006
t
t
t
SD
SD
SD
ADSP-BF538/ADSP-BF538F
t
t
DBG
DBH
Min
2 x t
SCLK
t
t
EBG
EBH
Max
4.5
4.5
3.6
3.6
3.6
3.6
t
t
t
SE
SE
SE
Unit
ns
ns
ns
ns
ns
ns
ns