adsp-21992 Analog Devices, Inc., adsp-21992 Datasheet - Page 39

• Manufacturer Part Number: adsp-21992
• Description: Mixed Signal Dsp Controller With Can
• Manufacturer: Analog Devices, Inc.

External Port Bus Request/Grant Cycle Timing
Table 22
bus grant operations.
Table 22. External Port Bus Request and Grant Cycle Timing
1
2
t
These are timing parameters that are based on worst-case operating conditions.
HCLK
Parameter
Timing Requirements
t
t
Switching Characteristics
t
t
t
t
t
t
BS
BH
SD
SE
DBG
EBG
DBH
EBH
is the peripheral clock period.
and
1, 2
Figure 12
CLKOUT High to BR Deasserted Hold Time
CLKOUT High to xMS, Address, and RD/WR Disable
CLKOUT Low to xMS, Address, and RD/WR Enable
CLKOUT High to BG Asserted Setup
CLKOUT High to BG Deasserted Hold Time
CLKOUT High to BGH Asserted Setup
CLKOUT High to BGH Deasserted Hold Time
BR Asserted to CLKOUT High Setup
describe external port bus request and
Rev. A | Page 39 of 60 | August 2007
Min
4.6
0
0
0
0
0
0
Max
0.5t
4
4
4
4
4
HCLK
+ 1
ADSP-21992
Unit
ns
ns
ns
ns
ns
ns
ns
ns