ADSP-21266SKSTZ-1D Analog Devices Inc, ADSP-21266SKSTZ-1D Datasheet - Page 17

• Manufacturer Part Number: ADSP-21266SKSTZ-1D
• Description: 150 MHz, 32Bit DSP Processor PB Free
• Manufacturer: Analog Devices Inc
• Series: SHARC®r
• Type: Fixed/Floating Pointr

Specifications of ADSP-21266SKSTZ-1D

• Interface: DAI, SPI
• Clock Rate: 150MHz
• Non-volatile Memory: ROM (512 kB)
• On-chip Ram: 256kB
• Voltage - I/o: 3.30V
• Voltage - Core: 1.20V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 144-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Table 10. Clock Periods
1
Table 11. CLKOUT and CCLK Clock Generation Operation
Timing
Requirements
t
t
t
t
where:
Timing
Requirements
CLKIN
CCLK
SR = serial port-to-core clock ratio (wide range, determined by SPORT
CK
CCLK
SCLK
SPICLK
CLKDIV)
SPIR = SPI-to-core clock ratio (wide range, determined by SPIBAUD register)
SCLK = serial port clock
SPICLK = SPI clock
RESET
XTAL
Description
Input Clock
Core Clock
BUF
CLKIN
Description
CLKIN Clock Period
(Processor) Core Clock Period
Serial Port Clock Period = (t
SPI Clock Period = (t
4096 CLKIN
DELAY OF
CYCLES
DIVIDER
PMCTL
CLKIN
1
Calculation
1/t
Variable, see equation
CK
PLLI
CLK
RESETOUT
CCLK
Figure 6. Core Clock and System Clock Relationship to CLKIN
) × SPIR
CCLK
Rev. C | Page 17 of 44 | October 2007
) × SR
CLKOUT
CLK_CFGx/PMCTL
FILTER
LOOP
MULTIPLIER
PLL
PLL
VCO
Use the exact timing information given. Do not attempt to
derive parameters from the addition or subtraction of others.
While addition or subtraction would yield meaningful results
for an individual device, the values given in this data sheet
reflect statistical variations and worst cases. Consequently, it is
not meaningful to add parameters to derive longer times.
See
reference levels.
Timing requirements apply to signals that are controlled by cir-
cuitry external to the processor, such as the data input for a read
operation. Timing requirements guarantee that the processor
operates correctly with other devices.
Switching characteristics specify how the processor changes its
signals. Circuitry external to the processor must be designed for
compatibility with these signal characteristics. Switching char-
acteristics describe what the processor will do in a given
circumstance. Use switching characteristics to ensure that any
timing requirement of a device connected to the processor (such
as memory) is satisfied.
Figure 31 on Page 37
DIVIDER
PLL
CLK_CFGx/
PMCTL
PMCTL
under Test Conditions for voltage
DIVIDE
BY 2
BUF
MCLK
RESETOUT
CCLK
CLKOUT
CORERST
ADSP-21266