adsp-21992 Analog Devices, Inc., adsp-21992 Datasheet - Page 21

• Manufacturer Part Number: adsp-21992
• Description: Mixed Signal Dsp Controller With Can
• Manufacturer: Analog Devices, Inc.

Table 7. Recommended Operating Conditions—ADSP-21992BST
1
2
3
4
Table 8. Recommended Operating Conditions—ADSP-21992YST
1
2
3
4
Parameter
V
V
AVDD
CCLK
HCLK
CLKIN
T
T
Parameter
V
V
AVDD
CCLK
HCLK
CLKIN
T
T
The HCLK frequency may be made to appear at the dedicated CLKOUT pin of the device. For low power operation, however, the CLKOUT pin can be disabled.
The peripherals operate at the HCLK rate, which may be selected to be equal to CCLK or CCLK 2, up to a maximum of a 80 MHz HCLK for the ADSP-21992BST.
In order to attain the correct CCLK and HCLK values, the input clock frequency or crystal frequency depends on the internal operation of the clock generation PLL
The maximum junction temperature is limited to 140°C in order to meet all of the electrical specifications. It is ultimately the responsibility of the user to ensure that
The HCLK frequency may be made to appear at the dedicated CLKOUT pin of the device. For low power operation, however, the CLKOUT pin can be disabled.
The peripherals operate at the HCLK rate, which may be selected to be equal to CCLK or CCLK 2, up to a maximum of an 50 MHz HCLK for the ADSP-21992YST.
In order to attain the correct CCLK and HCLK values, the input clock frequency or crystal frequency depends on the internal operation of the clock generation PLL
The maximum junction temperature is limited to 140°C in order to meet all of the electrical specifications. It is ultimately the responsibility of the user to ensure that
circuit and the associated frequency ratio.
the power dissipation of the ADSP-21992 (including all dc and ac loads) is such that the maximum junction temperature limit of 140°C is not exceeded.
circuit and the associated frequency ratio.
the power dissipation of the ADSP-21992 (including all dc and ac loads) is such that the maximum junction temperature limit of 140°C is not exceeded.
DDINT
DDEXT
JUNC
AMB
DDINT
DDEXT
JUNC
AMB
4
4
1, 2
1, 2
3
3
Conditions
Internal (Core) Supply Voltage
External (I/O) Supply Voltage
Analog Supply Voltage
DSP Instruction Rate, Core Clock
Peripheral Clock Rate
Input Clock Frequency
Silicon Junction Temperature
Ambient Operating Temperature
Conditions
Internal (Core) Supply Voltage
External (I/O) Supply Voltage
Analog Supply Voltage
DSP Instruction Rate, Core Clock
Peripheral Clock Rate
Input Clock Frequency
Silicon Junction Temperature
Ambient Operating Temperature
Rev. A | Page 21 of 60 | August 2007
3.135
2.375
–40
3.135
2.375
Min
2.375
0
0
0
Min
2.375
0
0
0
–40
Typ
2.5
3.3
2.5
Typ
2.5
3.3
2.5
Max
2.625
3.465
2.625
160
80
160
140
+85
Max
2.625
3.465
2.625
100
50
100
140
+125
ADSP-21992
Unit
V
V
V
MHz
MHz
MHz
Unit
V
V
V
MHz
MHz
MHz
C
C
C
C