adsp-21msp58 Analog Devices, Inc., adsp-21msp58 Datasheet - Page 32

• Manufacturer Part Number: adsp-21msp58
• Description: Dsp Microcomputers
• Manufacturer: Analog Devices, Inc.

ADSP-21msp58/59
Parameter
Host Interface Port
Separate Data and Address (HMD1 = 0)
Read Strobe and Write Strobe (HMD0 = 1)
Timing Requirement:
t
t
t
t
t
Switching Characteristic:
t
t
t
t
t
t
NOTES
1
2
3
HSU
HDSU
HWDH
HH
HRWP
HSHK
HKH
HDE
HDD
HRDH
HRDD
Start of Write or Read = HDS Low and HSEL Low.
End of Write or Read = HDS High and HSEL High.
Read or Write Pulse Width = HDS Low and HSEL Low.
HA2-0, HRW Setup before Start of Write or Read
Data Setup before End of Write
Data Hold after End of Write
HA2-0, HRW 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 WRITE CYCLE
HOST READ CYCLE
Figure 22. Host Interface Port (HMD1 = 0, HMD0 =1)
HD7–0
HA2–0
HACK
HD7–0
3
HSEL
HA2–0
HACK
HSEL
HRW
HDS
HRW
HDS
2
2
1
2
1
2
t
t
2
1
H S U
H S U
t
–32–
H D E
t
2
H D D
t
1
ADDRESS
H S H K
t
t
ADDRESS
H S H K
t
H R W P
H R W P
t
H D S U
DATA
DATA
Min
5
5
3
3
20
0
0
0
0
t
t
t
H R D H
H H
H H
t
HRDD
t
H W D H
t
t
H K H
H K H
Max
15
15
18
7
REV. 0
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns