ADSP-2181BST-115 Analog Devices Inc, ADSP-2181BST-115 Datasheet - Page 24

• Manufacturer Part Number: ADSP-2181BST-115
• Description: IC DSP CONTROLLER 16BIT 128TQFP
• Manufacturer: Analog Devices Inc
• Series: ADSP-21xxr
• Type: Fixed Pointr

Specifications of ADSP-2181BST-115

• Rohs Status: RoHS non-compliant
• Interface: Synchronous Serial Port (SSP)
• Clock Rate: 28.8MHz
• Non-volatile Memory: External
• On-chip Ram: 80kB
• Voltage - I/o: 5.00V
• Voltage - Core: 5.00V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 128-TQFP, 128-VQFP

ADSP-2181
Parameter
IDMA Read, Short Read Cycle
Timing Requirements:
t
t
Switching Characteristics:
t
t
t
t
t
NOTES
1
2
Start of Read = IS Low and IRD Low.
End of Read = IS High or IRD High.
IKR
IRP
IKHR
IKDH
IKDD
IRDE
IRDV
IACK Low before Start of Read
Duration of Read
IACK High after Start of Read
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
IACK
IRD
IS
Figure 18. IDMA Read, Short Read Cycle
1
1
t
IKR
t
IRDE
2
2
t
IKHR
t
IRDV
–24–
t
IRP
PREVIOUS
DATA
Min
0
15
0
0
t
IKDD
t
IKDH
Max
15
12
15
REV. D
Unit
ns
ns
ns
ns
ns
ns
ns