Texas Instruments TMS320C6722 사용자 설명서
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4.17.1 Clock Electrical Data/Timing
TMS320C6727, TMS320C6726, TMS320C6722
Floating-Point Digital Signal Processors
SPRS268E – MAY 2005 – REVISED JANUARY 2007
assumes testing over recommended operating conditions.
Table 4-39. CLKIN Timing Requirements
NO.
MIN
MAX
UNIT
1
f
osc
Oscillator frequency range (OSCIN/OSCOUT)
12
25
MHz
2
t
c(CLKIN)
Cycle time, external clock driven on CLKIN
20
ns
3
t
w(CLKINH)
Pulse width, CLKIN high
0.4t
c(CLKIN)
ns
4
t
w(CLKINL)
Pulse width, CLKIN low
0.4t
c(CLKIN)
ns
5
t
t(CLKIN)
Transition time, CLKIN
5
ns
6
f
PLL
Frequency range of PLL input
12
50
MHz
Peripheral and Electrical Specifications
101