adsp-2196m Analog Devices, Inc., adsp-2196m Datasheet - Page 40

• Manufacturer Part Number: adsp-2196m
• Description: Dsp Microcomputer
• Manufacturer: Analog Devices, Inc.

ADSP-2196
Host Port ACC Mode Read Cycle Timing
Table 17
on ACK, Ready, ALE, and ACC mode selection, see the Host port modes description
Table 17. Host Port ACC Mode Read Cycle Timing
1
40
t
the same time.
Parameter
Switching Characteristics
t
t
t
t
Timing Requirements
t
t
t
t
t
t
t
t
t
t
t
t
NH
RHKS
RHKH
RHS
RHH
CSAL
ALCS
RCSW
ALW
ALER
CSR
RCS
WAL
HKRD
ADW
WAD
RDH
are peripheral bus latencies (n t
and
This information applies to a product under development. Its characteristics and specifications are subject to change with-
out notice. Analog Devices assumes no obligation regarding future manufacturing unless otherwise agreed to in writing.
Figure 20
Description
HRD asserted to HACK asserted (setup, ACK Mode)
HRD de-asserted to HACK de-asserted (hold, ACK Mode)
HRD asserted to HACK asserted (setup, Ready Mode)
HRD asserted to HACK de-asserted (hold, Ready Mode)
HCMS or HCIOMS asserted to HALE asserted (delay)
HALE de-asserted to optional HCMS or HCIOMS
de-asserted
HRD de-asserted to HCMS or HCIOMS de-asserted
HALE asserted to HWR asserted
HALE de-asserted to HWR asserted
HCMS or HCIOMS asserted to HRD asserted
HRD de-asserted (after last byte) to HCMS or
HCIOMS de-asserted (ready for next read)
HWR de-asserted to HALE de-asserted (delay)
HACK asserted to HRD de-asserted (hold, ACK Mode)
Address valid to HWR de-asserted (setup)
HWR de-asserted to address invalid (hold)
HRD de-asserted to data invalid (hold)
describe host port read operations in Address Cycle Control (ACC) mode. For more information
HCLK
For current information contact Analog Devices at 800/262-5643
); these are internal DSP latencies related to the number of peripherals attempting to access DSP memory at
Min
1
0
1
1
0.5
1
1
1
1.5
1.5
4
1
1
on page
10.
September 2001
Max
1+t
2
1
2+t
2
NH
NH
1
1
REV. PrA
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns