adsp-21msp58 Analog Devices, Inc., adsp-21msp58 Datasheet - Page 31
adsp-21msp58
Manufacturer Part Number
adsp-21msp58
Description
Dsp Microcomputers
Manufacturer
Analog Devices, Inc.
Datasheet
1.ADSP-21MSP58.pdf
(40 pages)
- Current page: 31 of 40
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REV. 0
Parameter
Host Interface Port
Separate Data and Address (HMD1 = 0)
Read Strobe and Write Strobe (HMD0 = 0)
Timing Requirement:
t
t
t
t
t
Switching Characteristic:
t
t
t
t
t
t
NOTES
1
2
3
4
5
Start of Write = HWR Low and HSEL Low.
Start of Read = HRD Low and HSEL Low.
End of Write = HWR High or HSEL High.
End of Read = HRD High or HSEL High.
Read Pulse Width = HRD Low and HSEL Low, Write Pulse Width = HWR Low and HSEL Low.
HSU
HDSU
HWDH
HH
HRWP
HSHK
HKH
HDE
HDD
HRDH
HRDD
HA2-0 Setup before Start of Write or Read
Data Setup before End of Write
Data Hold after End of Write
HA2-0 Hold after End of Write or Read
Read or Write Pulse Width
HACK Low after Start of Write or Read
HACK Hold after End of Write or Read
Data Enabled after Start of Read
Data Valid after Start of Read
Data Hold after End of Read
Data Disabled after End of Read
HOST READ CYCLE
HOST WRITE CYCLE
Figure 21. Host Interface Port (HMD1 = 0, HMD0 = 0)
HD7–0
HD7–0
HA2–0
5
HA2–0
HACK
HSEL
HACK
HSEL
HWR
HRD
4
3
2
3
4
2
3, 4
t
1, 2
3, 4
H S U
1, 2
t
H D E
t
H D D
t
–31–
H S U
t
ADDRESS
H S H K
t
ADDRESS
t
t
H S H K
H R W P
H R W P
t
H D S U
DATA
DATA
t
t
H K H
t
H R D H
Min
5
5
3
3
20
0
0
0
0
H H
t
t
HRDD
H K H
t
H H
t
H W D H
ADSP-21msp58/59
Max
15
15
18
7
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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