ADSP-2185LBST-160 Analog Devices Inc, ADSP-2185LBST-160 Datasheet - Page 33
ADSP-2185LBST-160
Manufacturer Part Number
ADSP-2185LBST-160
Description
IC DSP CONTROLLER 16BIT 100LQFP
Manufacturer
Analog Devices Inc
Series
ADSP-21xxr
Type
Fixed Pointr
Specifications of ADSP-2185LBST-160
Rohs Status
RoHS non-compliant
Interface
Host Interface, Serial Port
Clock Rate
40MHz
Non-volatile Memory
External
On-chip Ram
80kB
Voltage - I/o
3.30V
Voltage - Core
3.30V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
100-LQFP
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ADSP-2185LBST-160
Manufacturer:
ADI
Quantity:
6 500
IDMA Read, Long Read Cycle
Table 23. IDMA Read, Long Read Cycle
1
2
3
4
5
6
Parameter
Timing Requirements:
t
t
Switching Characteristics:
t
t
t
t
t
t
t
t
Start of Read = IS Low and IRD Low.
End of Read = IS High or IRD High.
For the ADSP-2185L, and the ADSP-2187L, this specification is 4 ns min., and 15 ns max.
For the ADSP-2187L, this specification is 10 ns max.
DM read or first half of PM read.
Second half of PM read.
IKR
IRK
IKHR
IKDS
IKDH
IKDD
IRDE
IRDV
IRDH1
IRDH2
IACK Low Before Start of Read
End of Read After IACK Low
IACK High After Start of Read
IAD15–0 Data Setup Before IACK Low
IAD15 –0 Data Hold After End of Read
IAD15–0 Data Disabled After End of Read
IAD15–0 Previous Data Enabled After Start of Read
IAD15–0 Previous Data Valid After Start of Read
IAD15–0 Previous Data Hold After Start of Read (DM/PM1)
IAD15–0 Previous Data Hold After Start of Read (PM2)
IAD15–0
IACK
IRD
IS
2
1, 3
t
1
IRDE
t
IKR
Figure 25. IDMA Read, Long Read Cycle
ADSP-2184L/ADSP-2185L/ADSP-2186L/ADSP-2187L
Rev. C | Page 33 of 48 | January 2008
2
t
IRDV
t
2
IRDH1 OR
t
IKHR
PREVIOUS
4
DATA
t
IRDH2
6
5
t
IKDS
READ
DATA
t
IRK
Min
0
2
0.5t
0
0
2t
t
CK
CK
t
– 5
IKDD
CK
– 5
– 10
t
IKDH
Max
17
10
15
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns