ADSP-2181BST-133 Analog Devices Inc, ADSP-2181BST-133 Datasheet - Page 16

• Manufacturer Part Number: ADSP-2181BST-133
• Description: IC DSP CONTROLLER 16BIT 128TQFP
• Manufacturer: Analog Devices Inc
• Series: ADSP-21xxr
• Type: Fixed Pointr

Specifications of ADSP-2181BST-133

• Rohs Status: RoHS non-compliant
• Interface: Synchronous Serial Port (SSP)
• Clock Rate: 33.3MHz
• 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
• Device Core Size: 16b
• Architecture: Enhanced Harvard
• Format: Fixed Point
• Clock Freq (max): 33.3MHz
• Mips: 33.3
• Device Input Clock Speed: 33.3MHz
• Ram Size: 80KB
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (min): 4.5V
• Operating Supply Voltage (max): 5.5V
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 128
• Package Type: TQFP
• Lead Free Status / RoHS Status: Not Compliant

ADSP-2181
Parameter
Bus Request/Grant
Timing Requirements:
t
t
Switching Characteristics:
t
t
t
t
t
t
NOTES
xMS = PMS, DMS, CMS, IOMS, BMS.
1
2
BR is an asynchronous signal. If BR meets the setup/hold requirements, it will be recognized during the current clock cycle; otherwise the signal will be recognized on
BGH is asserted when the bus is granted and the processor requires control of the bus to continue.
BH
BS
SD
SDB
SE
SEC
SDBH
SEH
the following cycle. Refer to the ADSP-2100 Family User’s Manual, Third Edition for BR/BG cycle relationships.
BR Hold after CLKOUT High
BR Setup before CLKOUT Low
CLKOUT High to xMS,
RD, WR Disable
xMS, RD, WR
Disable to BG Low
BG High to xMS,
RD, WR Enable
xMS, RD, WR
Enable to CLKOUT High
xMS, RD, WR
Disable to BGH Low
BGH High to xMS,
RD, WR Enable
PMS, DMS
CLKOUT
CLKOUT
BMS, RD
BGH
WR
BR
BG
2
2
t
Figure 10. Bus Request–Bus Grant
SD
t
1
BH
1
t
t
BS
t
SDBH
SDB
–16–
Min
0.25t
0.25t
0
0
0.25t
0
0
CK
CK
CK
+ 2
+ 17
– 4
t
t
SEH
SE
t
SEC
Max
0.25t
CK
+ 10
REV. D
Unit
ns
ns
ns
ns
ns
ns
ns
ns