SM320F28335-EP_12 Datasheet, PDF (108/167 Pages) Texas Instruments – Digital Signal Controller (DSC)

SM320F28335-EP
SPRS581D – JUNE 2009 – REVISED MAY 2012
Table 6-3. Clocking and Nomenclature (150-MHz devices)
On-chip oscillator
clock
t_c(OSC), Cycle time
Frequency
XCLKIN ⁽¹⁾
t_c(CI), Cycle time
Frequency
SYSCLKOUT
t_c(SCO), Cycle time
Frequency
XCLKOUT
t_c(XCO), Cycle time
Frequency
HSPCLK ⁽²⁾
t_c(HCO), Cycle time
Frequency
LSPCLK ⁽²⁾
t_c(LCO), Cycle time
Frequency
ADC clock
t_c(ADCCLK), Cycle time
Frequency
(1) This also applies to the X1 pin if a 1.9-V oscillator is used.
(2) Lower LSPCLK and HSPCLK will reduce device power consumption.
(3) This is the default reset value if SYSCLKOUT = 150 MHz.
MIN
28.6
20
6.67
4
6.67
2
6.67
0.5
6.67
13.3
40
NOM
13.3 ⁽³⁾
75 ⁽³⁾
26.7 ⁽³⁾
37.5 ⁽³⁾
Table 6-4. Clocking and Nomenclature (100-MHz devices)
On-chip oscillator
clock
t_c(OSC), Cycle time
Frequency
XCLKIN ⁽¹⁾
t_c(CI), Cycle time
Frequency
SYSCLKOUT
t_c(SCO), Cycle time
Frequency
XCLKOUT
t_c(XCO), Cycle time
Frequency
HSPCLK ⁽²⁾
t_c(HCO), Cycle time
Frequency
LSPCLK ⁽²⁾
t_c(LCO), Cycle time
Frequency
ADC clock
t_c(ADCCLK), Cycle time
Frequency
(1) This also applies to the X1 pin if a 1.8-V oscillator is used.
(2) Lower LSPCLK and HSPCLK will reduce device power consumption.
(3) This is the default reset value if SYSCLKOUT = 100 MHz.
MIN
28.6
20
10
4
10
2
10
0.5
10
20
40
NOM
20 ⁽³⁾
50 ⁽³⁾
40 ⁽³⁾
25 ⁽³⁾
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MAX
50
35
250
150
500
150
2000
150
150
75
25
UNIT
ns
MHz
ns
MHz
ns
MHz
ns
MHz
ns
MHz
ns
MHz
ns
MHz
MAX
50
35
250
100
500
100
2000
100
100
50
25
UNIT
ns
MHz
ns
MHz
ns
MHz
ns
MHz
ns
MHz
ns
MHz
ns
MHz
108 Electrical Specifications
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