ADSP-BF533 AD [Analog Devices], ADSP-BF533 Datasheet - Page 26

• Manufacturer Part Number: ADSP-BF533
• Description: Blackfin Embedded Processor
• Manufacturer: AD [Analog Devices]

ADSP-BF531/ADSP-BF532/ADSP-BF533
External Port Bus Request and Grant Cycle Timing
Table 19
bus grant operations.
Table 19. External Port Bus Request and Grant Cycle Timing
1
2
Parameter
Timing Requirements
t
t
Switching Characteristics
t
t
t
t
t
t
These are preliminary timing parameters that are based on worst-case operating conditions.
The pad loads for these timing parameters are 20 pF.
BS
BH
SD
SE
DBG
EBG
DBH
EBH
and
, 1, 2
ARE
BR
Figure 14
CLKOUT
AMSx
BGH
ABE1-0
AWE
BG
ADDR19-1
BR Asserted to CLKOUT High Setup
CLKOUT High to BR Deasserted Hold Time
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
describe external port bus request and
t
BS
Figure 14. External Port Bus Request and Grant Cycle Timing
Rev. 0 | Page 26 of 56 | March 2004
t
BH
t
t
t
SD
SD
SD
t
t
DBG
DBH
Min
4.6
0.0
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
ns