adsp-2186n Analog Devices, Inc., adsp-2186n Datasheet - Page 32

• Manufacturer Part Number: adsp-2186n
• Description: Dsp Microcomputer
• Manufacturer: Analog Devices, Inc.

ADSP-218xN
Memory Write
Table 19. Memory Write
1
2
Parameter
Switching Characteristics:
t
t
t
t
t
t
t
t
t
t
w = wait states 3 t
xMS = PMS, DMS, CMS, IOMS, BMS.
DW
DH
WP
WDE
ASW
DDR
CWR
AW
WRA
WWR
CK
Data Setup before WR High
Data Hold after WR High
WR Pulse Width
WR Low to Data Enabled
A13–0, xMS Setup before WR Low
Data Disable before WR or RD Low
CLKOUT High to WR Low
A13–0, xMS Setup before WR Deasserted
A13–0, xMS Hold after WR Deasserted
WR High to RD or WR Low
.
ADDRESS LINES 1
DATA LINES 2
BMS, CMS,
DMS, PMS,
CLKOUT
IOMS
WR
1 ADDRESS LINES FOR ACCESSES ARE:
RD
BDMA: A13–0 (14 LSBs), D23–16 (8 MSBs)
I/O SPACE: A10–0
EXTERNAL PM AND DM: A13–0
1
2
Rev. A | Page 32 of 48 | August 2006
Figure 30. Memory Write
t
CWR
t
ASW
t
WDE
2 DATA LINES FOR ACCESSES ARE:
BDMA: D15–8
I/O SPACE: D23–8
EXTERNAL DM: D23–8
EXTERNAL PM: D23–0
t
AW
t
WP
t
DW
t
WRA
Min
0.5t
0.25t
0.5t
0
0.25t
0.25t
0.25t
0.75t
0.25t
0.5t
t
DH
CK
CK
CK
CK
CK
CK
CK
CK
CK
– 4 + w
– 3 + w
– 3
t
– 1
– 3
– 3
– 2
– 5 + w
– 1
WWR
t
DDR
Max
0.25t
CK
+ 4
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns