9397 750 13928 © Koninklijke Philips Electronics N.V. 2004. All rights reserved.
Product data Rev. 03 – 23 August 2004 23 of 31
Philips Semiconductors PNX2000
Audio video input processor
The supported crystal/external clock frequencies are 27 MHz and 13.5 MHz. The crystal
oscillator is follo w ed b y a selectable divide-by-two frequency divider giving three available
clock frequencies, as shown in Table 25.
The cr ys tal spec ification is:
•Package: surface mount.
•Accuracy: (±50 ppm).
•Temperature: (±50 p pm).
•Operating temperature range: −20 to +70 oC.
•Load capacitance: 30 pF.
Fig 4. Application diagram: (a) slave/test mode, (b) oscillation mode
Table 25: Primary clock settings
Clock/Crystal Input Divider setting Clock frequency
27 MHz x/1 27 MHz
27 MHz x/2 13.5 MHz
13.5 MHz x/1 13.5 MHz
13.5 MHz x/2 6.75 MHz
Table 26 : Crystal parameters
Oscillator
frequency (fc)
Crystal load
capacitanc e (CL)
Max.crystal series
resistance (RS)
External load
capacitors (Cx1; Cx2)
13.5 MHz
10 pF < 600 Ω2 x 18 pF
20 pF < 255 Ω2 x 38 pF
30 pF < 140 Ω2 x 58 pF
27 MHz
10 pF < 130 Ω2 x 18 pF
20 pF < 50 Ω38 pF; 18 pF
30 pF n.a. n.a.
osc_out
n.c.
osc_in
Cx2Cx1
on-chip
off-chip
(a) (b)
clock
xtm
clkout
pd
VSSA
XO
VDDA VSSA
VDDA
mce560
xtmpd
XO
clkout
osc_outosc_in