CC2564_15 Datasheet, PDF (13/47 Pages) Texas Instruments – Bluetooth® and Dual-Mode Controller

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V_Fref [V]
2.1
V_{high_min}
1.0
CC256x
SWRS121D – JULY 2012 – REVISED JANUARY 2014
0.37
V_{low_max}
–0.2
t
clksqtd_wrs064
Figure 3-4. External Fast Clock (Square Wave, DC-Coupled)
Figure 3-5 and Figure 3-6 show the clock configuration when using a sine wave, DC-coupled external
source for the fast clock input.
FREFP
CC256x
FREFM
VDD_IO
SWRS121-007
Figure 3-5. Clock Configuration (Sine Wave, DC-Coupled)
V_IN
1.6 V
VPP = 0.4 – 1.6 Vp-p
V_dc = 0.2 – 1.4 V
0
Figure 3-6. External Fast Clock (Sine Wave, DC-Coupled)
t
SWRS097-023
3.4.2.2 External F_REF Sine Wave, AC-Coupled
Figure 3-7 and Figure 3-8 show the configuration when using a sine wave, AC-coupled external source for
the fast-clock input.
FREFP
CC256x
68 pF
FREFM
VDD_IO
SWRS121-008
Figure 3-7. Clock Configuration (Sine Wave, AC-Coupled)
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