cx28250 Mindspeed Technologies, cx28250 Datasheet - Page 198
![no-image](/images/manufacturer_photos/0/4/449/mindspeed_technologies_sml.jpg)
cx28250
Manufacturer Part Number
cx28250
Description
Cx28250 Atm Physical Interface Phy Devices
Manufacturer
Mindspeed Technologies
Datasheet
1.CX28250.pdf
(213 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
cx28250-23ES
Manufacturer:
MNDSPEED
Quantity:
5 510
Company:
Part Number:
cx28250-23ES
Manufacturer:
JST
Quantity:
5 510
Company:
Part Number:
cx28250-26
Manufacturer:
MARVELL
Quantity:
28
Company:
Part Number:
cx28250-26
Manufacturer:
MINDSPEED
Quantity:
745
- Current page: 198 of 213
- Download datasheet (3Mb)
Appendix A PECL Applications
A.3 CX28250 to 5 V PMD Outputs
A-6
A.3 CX28250 to 5 V PMD Outputs
The recommended termination and level shifting circuit for connecting 5.0 V
PECL outputs to the CX28250 3.3 V PECL inputs is illustrated in
The line termination impedance is demonstrated in the following equation:
generally V
CX28250 is:
of 340 mV .
The outputs of the 5 V PECL should be biased at around V
If you select:
R
R
R
Z
Then the low level input voltage, V
This is well below the maximum of V
Given that the V
Not only is this above the minimum (V
0
6
7
8
= 50 Ω
= 82.5 Ω
= 56 Ω
= 75 Ω
Mindspeed Technologies
cc
-2.0. Therefore:
oh
for 5 V PECL is around V
V il
V
3.0V
=
ih
Z 0
----------------------------------- -
(
=
R
=
=
6
5.0
-----------------------
(
3.7
+
R
(
----------------------------------- -
(
(
------------------------------------- -
R
(
R
7
R
R
R
il
×
7
6
+
×
7
7
, going to the CX28250 is:
6
+
+
™
R
+
+
R
ref
R
+
8
ref
R
R
8
8
R
R
-0.06 V .
R
)
ATM Physical Interface (PHY) Devices
8
7
8
8
+0.06), but it provides a differential
7
)
+
)
)
=
×
+
×
R
=
R
R
cc
2.1V
V
8
6
8
)
1.76V
-1.3 V , then V
cc
)
ref
28250-DSH-002-C
ih
, which is
for the
Figure
CX28250
A-4.
Related parts for cx28250
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![CX29702G-14](/images/manufacturer_photos/0/4/449/mindspeed_technologies_tmb.jpg)
Part Number:
Description:
Framer SDH ATM/POS/STM-1 SONET/STS-3 3.3V 272-Pin BGA
Manufacturer:
Mindspeed Technologies
![RS8234EBGC](/images/manufacturer_photos/0/4/449/mindspeed_technologies_tmb.jpg)
Part Number:
Description:
RS8234EBGC ATM XBR SAR
Manufacturer:
Mindspeed Technologies
Datasheet:
![CN8236EBGB](/images/manufacturer_photos/0/4/449/mindspeed_technologies_tmb.jpg)
Part Number:
Description:
ATM SAR 155Mbps 3.3V ABR/CBR/GFR/UBR/VBR 388-Pin BGA
Manufacturer:
Mindspeed Technologies
Datasheet:
![M28529G-12](/images/manufacturer_photos/0/4/449/mindspeed_technologies_tmb.jpg)
Part Number:
Description:
ATM IMA 8.192Mbps 1.8V/3.3V 484-Pin BGA
Manufacturer:
Mindspeed Technologies
Datasheet:
![CN8237EBGB](/images/manufacturer_photos/0/4/449/mindspeed_technologies_tmb.jpg)
Part Number:
Description:
ATM SAR 622Mbps 3.3V ABR/CBR/GFR/UBR/VBR 456-Pin BGA
Manufacturer:
Mindspeed Technologies
Datasheet:
![28234G-15](/images/manufacturer_photos/0/4/449/mindspeed_technologies_tmb.jpg)
Part Number:
Description:
RS8234EBGD ATM XBR SAR, ROHS
Manufacturer:
Mindspeed Technologies
![M28353G-15](/images/manufacturer_photos/0/4/449/mindspeed_technologies_tmb.jpg)
Part Number:
Description:
3-PORT T3/E3/STS-1 LIU WITH/ DJAT IC (ROHS)
Manufacturer:
Mindspeed Technologies
![CX28229G-14](/images/manufacturer_photos/0/4/449/mindspeed_technologies_tmb.jpg)
Part Number:
Description:
ATM IMA 800Mbps 1.8V/3.3V 256-Pin BGA
Manufacturer:
Mindspeed Technologies
Datasheet:
![CX29704G-14](/images/manufacturer_photos/0/4/449/mindspeed_technologies_tmb.jpg)
Part Number:
Description:
Framer SDH ATM/POS/STM-1 SONET/STS-3 3.3V 272-Pin BGA
Manufacturer:
Mindspeed Technologies
![28228-12](/images/manufacturer_photos/0/4/449/mindspeed_technologies_tmb.jpg)
Part Number:
Description:
Manufacturer:
Mindspeed Technologies
Datasheet:
![CX28229-14](/images/manufacturer_photos/0/4/449/mindspeed_technologies_tmb.jpg)
Part Number:
Description:
Manufacturer:
Mindspeed Technologies
Datasheet:
![CX29610-12](/images/manufacturer_photos/0/4/449/mindspeed_technologies_tmb.jpg)
Part Number:
Description:
Manufacturer:
Mindspeed Technologies
Datasheet:
![M02045-2Y03-T](/images/manufacturer_photos/0/4/449/mindspeed_technologies_tmb.jpg)
Part Number:
Description:
Manufacturer:
Mindspeed Technologies
Datasheet:
![RS8973EPF](/images/manufacturer_photos/0/4/449/mindspeed_technologies_tmb.jpg)
Part Number:
Description:
Manufacturer:
Mindspeed Technologies
Datasheet:
![CX28985](/images/manufacturer_photos/0/4/449/mindspeed_technologies_tmb.jpg)
Part Number:
Description:
Manufacturer:
Mindspeed Technologies
Datasheet: