ADSP-2187LBST-160 Analog Devices Inc, ADSP-2187LBST-160 Datasheet - Page 33

• Manufacturer Part Number: ADSP-2187LBST-160
• Description: IC DSP CONTROLLER 16BIT 100TQFP
• Manufacturer: Analog Devices Inc
• Series: ADSP-21xxr
• Type: Fixed Pointr

Specifications of ADSP-2187LBST-160

• Rohs Status: RoHS non-compliant
• Interface: Host Interface, Serial Port
• Clock Rate: 40MHz
• Non-volatile Memory: External
• On-chip Ram: 160kB
• Voltage - I/o: 3.30V
• Voltage - Core: 3.30V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 100-TQFP, 100-VQFP
• Device Core Size: 16b
• Format: Fixed Point
• Clock Freq (max): 40MHz
• Mips: 40
• Device Input Clock Speed: 40MHz
• Ram Size: 160KB
• Program Memory Size: 96KB
• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (min): 3V
• Operating Supply Voltage (max): 3.6V
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 100
• Package Type: LQFP
• Lead Free Status / Rohs Status: Not Compliant

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