ds96-039wdsp ETC-unknow, ds96-039wdsp Datasheet - Page 95

• Manufacturer Part Number: ds96-039wdsp
• Description: Clarification Serial Control Register Description Dsp1620/27/28/29 Devices
• Manufacturer: ETC-unknow

DSP1628 Digital Signal Processor
10 Timing Characteristics for 2.7 V Operation
10.7 External Memory Interface
The following timing diagrams, characteristics, and requirements do not apply to interactions with delayed external
memory enables unless so stated. See the DSP1611/17/18/27 Digital Signal Processor Information Manual for a
detailed description of the external memory interface including other functional diagrams.
* W = number of wait-states.
Table 78. Timing Characteristics for External Memory Enables (EROM, ERAMHI, IO, ERAMLO)
Table 79. Timing Characteristics for Delayed External Memory Enables (ioc = 0x000F)
93
ENABLE
Abbreviated Reference
Abbreviated Reference
CKO
V
V
V
V
OH
OH
OL
OL
t33
t33
t34
t33
CKO to Delayed ENABLE Active (low to low)
CKO to ENABLE Active (low to low)
CKO to ENABLE Inactive (low to high)
Figure 18. Enable Transition Timing
W* = 0
Parameter
Parameter
t34
(continued)
Min
–1
0
Min
T/2
Lucent Technologies Inc.
Max
4.5
5
T/2 + 7
Max
February 1997
Unit
ns
ns
Unit
ns
5-4020 (C).b