參數(shù)資料
型號: ADSP-2171BST-104
廠商: ANALOG DEVICES INC
元件分類: 數(shù)字信號處理
英文描述: DSP Microcomputer
中文描述: 24-BIT, 13 MHz, OTHER DSP, PQFP128
封裝: PLASTIC, TQFP-128
文件頁數(shù): 25/52頁
文件大小: 664K
代理商: ADSP-2171BST-104
ADSP-2171/ADSP-2172/ADSP-2173
REV. A
–25–
ADSP-2171/ADSP-2172
Parameter
Min
Max
Unit
Host Interface Port
Separate Data and Address (HMD1 = 0)
Read Strobe and Write Strobe (HMD0 = 0)
T iming Requirement:
t
HSU
t
HDSU
t
HWDH
t
HH
t
HRWP
HA2–0 Setup before Start of Write or Read
1, 2
Data Setup before End of Write
3
Data Hold after End of Write
3
HA2–0 Hold after End of Write or Read
3, 4
Read or Write Pulse Width
5
5
5
3
3
20
ns
ns
ns
ns
ns
Switching Characteristic:
t
HSHK
t
HK H
t
HDE
t
HDD
t
HRDH
t
HRDD
HACK
Low after Start of Write or Read
1, 2
HACK
Hold after End of Write or Read
3, 4
Data Enabled after Start of Read
2
Data Valid after Start of Read
2
Data Hold after End of Read
4
Data Disabled after End of Read
4
0
0
0
15
15
ns
ns
ns
ns
ns
ns
18
0
7
NOT ES
1
Start of Write =
HWR
Low and
HSEL
Low.
2
Start of Read =
HRD
Low and
HSEL
Low.
3
End of Write =
HWR
High or
HSEL
High.
4
End of Read =
HRD
High or
HSEL
High.
5
Read Pulse Width =
HRD
Low and
HSEL
Low, Write Pulse Width =
HWR
Low and
HSEL
Low.
DATA
HD15–0
HSEL
HWR
HACK
HA2–0
ADDRESS
t
HSU
t
HH
t
HWDH
t
HRWP
t
HSHK
t
HKH
t
HDSU
DATA
HD15–0
HSEL
HRD
HACK
HA2–0
ADDRESS
t
HSU
t
HH
t
HRWP
t
HRDH
t
HRDD
t
HKH
t
HSHK
t
HDE
t
HDD
Figure 14. Host Interface Port (HMD1 = 0, HMD0 = 0)
Host Write Cycle
Host Read Cycle
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ADSP-2171BST-133 DSP Microcomputer
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