oq2541u NXP Semiconductors, oq2541u Datasheet - Page 3

• Manufacturer Part Number: oq2541u
• Description: Sdh/sonet Data And Clock Recovery Unit Stm1/4/16 Oc3/12/48 Ge
• Manufacturer: NXP Semiconductors

Philips Semiconductors
BLOCK DIAGRAM
1999 May 27
handbook, full pagewidth
SDH/SONET data and clock recovery unit
STM1/4/16 OC3/12/48 GE
CREFQ
CREF
DINQ
DIN
i.c.
21
22
33
34
5
17
GND
13, 18, 19,
36, 40
2, 5, 8, 10, 11, 14, 17,
20, 23, 26, 29, 32, 35,
38, 41, 44, 47
FREQUENCY
ALEXANDER
DETECTOR
DETECTOR
(1000 ppm)
WINDOW
PHASE
LOCK
12
enable
LOS
DREF19
Fig.1 Block diagram.
39
FREQUENCY
DIVIDER 2
9
64/128
DREF39
3
DOUT1250
24
FREQUENCY
CAPDOQ
130 pF
27
DIVIDER 1
DOUT622
1/2/4/16
OQ2541
16
CAPUPQ
dt
28
DOUT155
integrating
15
proportional
130 pF
path
30
path
OQ2541HP; OQ2541U
AREF
V EE1
CONTROL
OUTPUT
CLOCK
2.5 GHz
POWER
DATA
25
AND
VCRO
48
ENL
V EE2
1
31
MBH972
42
43
45
46
37
Product specification
6
7
3
4
DOUT
DOUTQ
COUT
COUTQ
DLOOP
DLOOPQ
CLOOP
CLOOPQ
PC