pnx1500 NXP Semiconductors, pnx1500 Datasheet - Page 161

• Manufacturer Part Number: pnx1500
• Description: Pnx15xx Series Connected Media Processor
• Manufacturer: NXP Semiconductors

Philips Semiconductors
Volume 1 of 1
PNX15XX_SER_3
Product data sheet
2.2.2 The Clock Dividers
PLL Characteristics
Table 4: PLL Characteristics
The clock dividers allow to generate internally low jitter fixed clocks derived from the
1.728 GHz PLL. Resulting jitter is higher than the PLL jitter but remains less than 200
ps.
Table 5: Internal Clock Dividers
PLL Data
Input clock frequency
VCO input frequency
VCO output frequency
Output frequency
Jitter (high frequency)
Lock time
Duty Cycle
Clock Name
clk_192
clk_173
clk_157
clk_144
clk_133
clk_123
clk_115
clk_108
clk_102
clk_96
clk_86
clk_78
clk_72
clk_66
clk_62
clk_58
clk_54
clk_48
clk_39
clk_33
clk_24
clk_17
clk_13_5
Table 5
shows the 22 available internal clocks.
Rev. 3 — 17 March 2006
Clock Source
1.728 GHz
1.728 GHz
1.728 GHz
1.728 GHz
1.728 GHz
1.728 GHz
1.728 GHz
1.728 GHz
1.728 GHz
clk_192
clk_173
clk_157
clk_144
clk_133
clk_123
clk_115
clk_108
clk_192
clk_157
clk_133
clk_192
clk_133
clk_108
< 150 ps
< 100 s
50-50 (with P=1, 2, 3)
[37,63]-[63,37] (with P=0)
2MHz F
3MHz F
100MHz F
12.5MHz F
Divider Value
9
10
11
12
13
14
15
16
17
2
2
2
2
2
2
2
2
4
4
4
8
8
8
in
pd
vco
out
Chapter 5: The Clock Module
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
150MHz
27MHz
600MHz
600MHz
PNX15xx Series
Exact Frequency
192 MHz
172.8 MHz
157.0909 MHz
144 MHz
132.9231 MHz
123.4286 MHz
115.2 MHz
108 MHz
101.6471 MHz
96 MHz
86.4 MHz
78.54545 MHz
72 MHz
66.46155 MHz
61.7143 MHz
57.6 MHz
54 MHz
48 MHz
39.272725 MHz
33.230775 MHz
24 MHz
16.6153875 MHz
13.5 MHz
5-10