ADSP-2186LKST-115 Analog Devices Inc, ADSP-2186LKST-115 Datasheet - Page 32

• Manufacturer Part Number: ADSP-2186LKST-115
• Description: IC DSP CONTROLLER 16BIT 100LQFP
• Manufacturer: Analog Devices Inc
• Series: ADSP-21xxr
• Type: Fixed Pointr

Specifications of ADSP-2186LKST-115

• Rohs Status: RoHS non-compliant
• Interface: Host Interface, Serial Port
• Clock Rate: 28.8MHz
• Non-volatile Memory: External
• On-chip Ram: 40kB
• Voltage - I/o: 3.30V
• Voltage - Core: 3.30V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 100-LQFP

ADSP-2184L/ADSP-2185L/ADSP-2186L/ADSP-2187L
IDMA Write, Long Write Cycle
Table 22. IDMA Write, Long Write Cycle
1
2
3
4
5
Parameter
Timing Requirements:
t
t
t
Switching Characteristics:
t
t
Start of Write = IS Low and IWR Low.
If Write Pulse ends before IACK Low, use specifications t
If Write Pulse ends after IACK Low, use specifications t
This is the earliest time for IACK Low from Start of Write. For IDMA Write cycle relationships, please refer to the ADSP-2100 Family User’s Manual.
For the ADSP-2185L, and the ADSP-2187L, this specification is 4 ns min., and 15 ns max.
IKW
IKSU
IKH
IKLW
IKHW
IACK Low Before Start of Write
IAD15–0 Data Setup Before End of Write
IAD15–0 Data Hold After End of Write
Start of Write to IACK Low
Start of Write to IACK High
IAD15–0
IACK
IWR
IS
4
5
IKSU
1
IDSU
, t
t
IK W
, t
IKH
Figure 24. IDMA Write, Long Write Cycle
Rev. C | Page 32 of 48 | January 2008
IDH
.
.
2, 3, 4
2, 3, 4
t
IKH W
t
IKSU
t
IK LW
DATA
t
IK H
Min
0
0.5t
2
1.5t
CK
CK
+ 10
Max
17
Unit
ns
ns
ns
ns
ns