adaptor Cards USeR`S manUal

PCIe
®
Adaptor Cards
User’s Manual
Covering:
PCIEA Series
May 2013
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Copyright © 2013 Samtec, Inc.
2
Table of Contents
Introduction
Product Features............................................................................ 5
Functional Description
Data Path..........................................................................................7
Clocking............................................................................................7
Reset...............................................................................................7
Target Card Auxiliary Signal Isolation...............................................7
ON-Board Diagnostics
Diagnostic LEDs............................................................................. 8
Front Bracket LEDs......................................................................... 9
card configuration
Jumper Headers............................................................................. 9
Installation
Installing an Adaptor Card............................................................ 10
Installing an Active Optical Cable...................................................10
Installing a Copper Cable................................................................11
Removing AOCs / Copper Cables...................................................11
Technical Information
Design Specifications.....................................................................11
Ordering Information......................................................................11
PCIe® is a registered trademark of PCI-SIG®.
Note: Samtec PCIe® over Fiber systems have successfully passed the PCI-SIG® Compliance Workshop #85; however
as with all PCIe® based systems, there is a risk of interoperability issues with specific systems. Samtec recommends
discussing your system with our Optical Group prior to final design. Please contact [email protected]
3
Introduction
The PCIEA Series* are PCI Express® Gen 2 Compliant Switch Adaptor
Cards designed to optimize performance for PCIe® over Fiber
Applications enabling links up to 300 m in length. In addition to
supporting optical links, PCIe® over copper cable is also supported,
allowing use of cost effective copper cables for links up to 7 m.
*Mates with PCIEO Series Samtec active optical cable assemblies.
PCIe® x4 card
4
PCIe® x8 card
Introduction
Product Features
• PCIe® Base Spec 2.1
- Gen 1 (2.5 GT/s) compliant
- Gen 2 (5.0 GT/s) compliant
• Low profile card available with full size or low profile bracket
• Supports copper cables up to 7 m in length
• Supports Samtec Active Optical Cables (PCIEO Series) up to 300 m
• Enables Spread-spectrum Clock Support
• Supports PCIe® auxiliary signaling
- CPWRON
- CPERST#
- CPRSNT#
- CWAKE#
• Diagnostic LEDs
- link speed and width
- power
- sideband status
5
Functional Description
The block diagram of the adaptor card is shown in Figure 1
[PCIEA-8G2-H-01 shown].
Figure 1: Adaptor Card Functional Block Diagram
6
Functional Description
Data Path
The cards are based on a 24 lane, 6 port IDT PCIe® switch of which only 16
lanes are used for the x8 cards, and only 8 for the x4 cards. The other lanes
are powered off to minimize power consumption. Port0 is connected to the
card edge connector and Port8 is connected to the PCIe® External Cabling
Specifications compliant x8 cable connector. Port8 lanes are reversed for
maximum RF performance. Port0 and Port8 are configured as follows for
the host and target modes:
Ports
Host Mode
Target Mode
Port0
Upstream
Downstream
Port8
Downstream
Upstream
Clocking
The two 100 MHz clocks for the switch are supplied by an on-board
PCIe® Base Spec 2.1 compliant frequency generator. This generator also
supplies the constant clock source that drives the PCIe® cable connector
for the host card and the PCIe® edge connector for the target mode.
Reset
At power-up, the card is held in reset until the on-board generated
voltages are stable and the auxiliary signal PERST# is disabled.
Target Card Auxiliary Signal Isolation
The target card can be identified by the four optocouplers situated
above the cable cage. These provide electrical isolation for the auxiliary
signals when a copper cable is used to extend the PCIe® bus.
7
On-board diagnostics
Diagnostic LEDs
Diagnostic LEDs are included on both host and target adaptor cards.
Their functions are described in the below table.
LED
Name
1
CPERST#
2
CPRSNT#
3
4
5
6
7
CPWRON
CWAKE#
RST
AUX
PGOOD
State
Auxiliary Signal CPERST# is high
Red
Auxiliary Signal CPERST# is low (generating reset)
Off
Auxiliary Signal CPRSNT# is low (downstream system is connected)
Red
Auxiliary Signal CPRSNT# is high
Off
Auxiliary Signal CPWRON is high (power good)
Red
Auxiliary Signal CPWRON is low
Off
Auxiliary Signal CWAKE# is high
Red
Auxiliary Signal CWAKE# is low
Off
IDT switch operating normally
Red
IDT switch is held in reset
Off
Aux 3.3 V power supply not present
Green
8
Card generated 1.0 V, 2.5 V and 3.3 V power rails are not stable at correct voltage
Green
Card generated 1.0 V, 2.5 V and 3.3 V power rails are stable and at correct voltage
Gen 1 speed (2.5 GT/s) physical link
Green
Gen 2 speed (5.0 GT/s) physical link
Off
Card Edge
Activity
Green
10*
Cable Link
Width
Green
Card Edge
Link Width
No Link
Amber
9
11*
Aux 3.3 V power supply present
Off
Off
Card Edge
Link Speed
Description
Off
Off
Off
Green
No Activity
Active data transfer through card edge connector
No Physical Link negotiated
Physical link negotiated. Link width corresponds to number of lit LEDs
No Physical Link negotiated
Physical link negotiated. Link width corresponds to number of lit LEDs
*x8 card shown; x4 cards have only 4 LEDs for banks 10 and 11
8
On-board diagnostics
Front Bracket LEDs
In addition, there are two LEDs on the front bracket of the card. These
are labeled “Link” and “Activity” and their function is:
Name
State
Off
No Link
Link
Amber
Gen 1 speed (2.5 GT/s) physical link
Green
Gen 2 speed (5.0 GT/s) physical link
Activity
Description
Off
No Activity
Green
Active data transfer through cable
Card configuration
Jumper Headers
There are several jumper connectors on the adaptor card. Their stuffing is
dependent on whether the card is a host or a target. In the below table, the
shipped condition is bolded for the host and underlined for the target.
Number
Host/Target
JP3
Target
JP4
Target
JP5
JP7
Both
Both
Description
Jumper installed
Enables IDT reset from CPERST#
Jumper not installed
Do not reset IDT on CPERST#
Jumper installed
Connects CPERST# and PERST#
Jumper not installed
Isolates PERST# from CPERST#
Jumper installed
CWAKE# is held low at cable connector*
Jumper not installed
CWAKE# is propagated
Open
No power supplied to cable connector
Jumper installed on pins 1 and 2
Cable is powered by card generated 3.3 V
Jumper installed on pins 1 and 3
Cable is powered by 3.3 V Aux
* PCIe-over-Fiber AOCs that support sideband propagation will not work in this configuration. If this option is required then the
option “NO Sidebands” needs to be chosen when ordering the cables.
9
Installation
Warning
!
Adaptor Cards and Active Optical Cables are ESD sensitive. Always
take suitable precautions when installing cards and AOCs to prevent
damage to these components.
Installing an Adaptor Card
1. Power down the host system.
2. Open the chassis per manufacturer’s instructions.
3. Identify an empty PCIe® x8 or x16 socket to use. Note, not all sockets support x8 or x16 PCIe® lanes even though they have sockets.
It is recommended to check the system manual to confirm socket
capabilities. The adaptor cards will automatically reconfigure for
lower lane counts; however, throughput will be reduced.
4. Remove the blanking plate corresponding to the identified
PCIe® socket.
5. Insert the adaptor into the socket, ensuring that the card
is well seated.
6. Secure the card with the removed screw from step 4.
7. Close the chassis.
8.When powering up, ensure a cable is connected and the downstream
device is powered up first.
Installing an Active Optical Cable
1. Ensure that upstream and downstream systems are powered down.
2. Identify the host end and target end of the AOC. The host end should
be installed in the upstream port and the target end should be installed
in the downstream port.
3. Based on step 2, insert the correct end of the AOC fully into the chosen
port. Note: The port housing is polarized and the connector can only
be inserted one way.
4. Ensure the latch mechanism interlocks with the cutouts in the
port housing.
10
InSTALLATION
Installing a Copper Cable
1. Ensure that upstream and downstream systems are powered down.
2. Copper cable connectors are identical and no care needs to be taken
with where each end needs to be plugged.
3. Ensure the latch mechanism interlocks with the cutouts in the
port housings.
Removing AOCs/Copper Cables
1. Both cable types have a latching mechanism to prevent accidental removal.
The latching mechanism needs to be released prior to removal.
a. For optical cables, this is achieved by squeezing the ridged lever
on the end closest to the fiber entry
b. For copper cables, this is achieved by pulling the green plastic
release latch
Technical Information
Design Specifications
PCIEA Series cards have been designed to meet the following parameters:
Specification
Unit
Min
Operating Temperature
°C
0
Typ
Max
55
Relative Humidity
%
5
95
Altitude
m
0
Power Consumption
W
Shock
G
Notes
Noncondensing
3000
9
30
Acceleration Peak
Ordering Information
PCIe® Adaptor Cards
PCIEA - XXX -
Product Category
Speed
x4 channel device
x8 channel device
X
- 01
4G2
8G2
Type
Host Card
Target Card
H
T
11
For more information visit
www.samtec.com/active-optics or contact
Samtec’s Optical Group at [email protected]
All designs, specifications and components are
preliminary and subject to change without notice.
SUDDEN SERVICE