PEF22827EL-V11 Lantiq, PEF22827EL-V11 Datasheet - Page 286

• Manufacturer Part Number: PEF22827EL-V11
• Manufacturer: Lantiq

Specifications of PEF22827EL-V11

• Lead Free Status / RoHS Status: Supplier Unconfirmed

12.6.4.4 DCXO Characteristics
Table 105
Table 105
Parameter
Tolerance External
Crystal
Center Frequency
Tuning Range
Step Size
Frequency coding
DCXO_FO
The DCXO frequency is controlled directly via the DCXO register. The DCXO register
can be accessed via the serial control interface.
12.7
This chapter describes the following electrical characteristics for the Line Driver Block:
•
•
•
•
12.7.1
Table 106
Preliminary Data Sheet
Absolute Maximum Ratings – Line Driver Block
Operating Range – Line Driver Block
DC Characteristics – Line Driver Block
AC Characteristics – Line Driver Block
describes the electrical characteristics of the DCXO.
lists the absolute maximum ratings for the Line Driver block.
Electrical Characteristics – Line Driver Block
Absolute Maximum Ratings – Line Driver Block
DCXO Characteristics
Min.
-50
25
0
(
+120)
Values
Typ.
±120
<0.3
286
Max.
50
38.88
5
255
( -
120)
Electrical Characteristics - Overview
Unit Notes
ppm
MHz ± 50 ppm, Nominal values
ppm
ppm
cod
e
(pp
m)
- 25/27.27/29.7/ 32.4/
35.64/ 38.88MHz. See
“Operating Range –
Analog Block” on
Page 281
Crystal spec (38.88 MHz):
f
C1 >= 35 fF
R1 <= 30 Ohm
C0 = 8 pF
CL
CL = 22 pF to 50 pF
nom
nom
= 38.88 MHz
= 31.3 pF
Rev. 1.1, 2005-01-30
VDSL6100i
PEF 22827