CPS-16 Datasheet 47 April 6, 2016
1 Device Overview
The CPS-16, device number IDT80KSW0002, is a serial RapidIO (sRIO)
switch
whose functionality is central to routing packets for distribution among DSPs,
processors, FPGAs, other switches, or any other sRIO-based devices. It may
also be used in serial RapidIO backplane switching. The CPS-16 supports serial
RapidIO packet switching (unicast, multicast, and an optional broadcast) from
any of its 16 input ports to any of its 16 output ports.
2 Features
?
Interfaces - sRIO
16 bidirectional serial RapidIO (sRIO) lanes v 1.3
Port Speeds selectable: 3.125Gbps, 2.5Gbps, or 1.25Gbps
All lanes support short haul or long haul reach for each PHY speed
Configurable port count to up to sixteen 1x ports, four 4x ports, or
combinations of 1x and 4x ports (ex. twelve 1x ports and one 4x port)
Lanes can be configured as individual non-redundant 1x ports, as
part of a redundant 1x port, or as part of a 4x port
Support for two separate port rates for each quad
Supports standard 4 levels of priority
Error management support
?
Interfaces - I
2
C
Provides I
2
C port for maintenance and error reporting
Master or Slave Operation
Master allows power-on configuration from external ROM
Master mode configuration with external image compressing and
checksum
?
Performance
40 Gbps of peak switching bandwidth
Non-blocking data flow architecture within each sRIO priority
Very low latency for all packet length and load condition
Internal queuing buffer and retransmit buffer
Standard receiver based physical layer flow control
?
Features
Configurable for Cut Through or Store And Forward data flow
Device configurable through any of sRIO ports, I
2
C, or JTAG
Packet Trace. Each port provides the ability to match the first 160 bits
of any packet against up to 4 programmable comparison values to
copy the packet to a programmable output trace port
Packet Filter. Each port also provides the ability to filter the packet
based on comparisons against these same 4 programmable values
mentioned above.
Supports up to 10 simultaneous multicast masks
Broadcast support
Port Loopback Debug Feature
Software assisted error recovery, supporting hot swap
Ports may be individually turned off to reduce power
PMON counters for monitor and diagnostics. Per input port and
output port counters.
SerDes physical diagnostic registers
Embedded PRBS generation and detection with programmable poly-
nomials support Bit Error Rate (BER) testing
0.13um technology
Low power dissipation
Full JTAG Boundary Scan Support (IEEE1149.1 & 1149.6)
Package: 324-ball grid array, 19mm x 19mm, 1.0mm ball pitch
3 Block Diagram
Figure 1 Block diagram
Maintenance
&
Error
Management
ConfigurationJTAG I
2
C
Serial RapidIO 2.0 Switch
CPS-16
Ln0
Ln1
Ln2
Ln3
Ln5
Ln6
Ln7
Ln4
Ln8
Ln9
Ln10
Ln11
Ln13
Ln14
Ln15
Ln12
Datasheet
80KSW0002
16-Port Serial RapidIO®
Switch
IDT80KSW0002 Datasheet
CPS-16 Datasheet 47 April 6, 2016
4 Device Description
The CPS-16 is optimized for DSP cluster applications at board level. Its main function is to have a backplane interface which can connect to a back-
plane switch or directly to multiple RF cards. On the line card side it can also connect to multiple ports. It supports up to 16 ports which are configu-
rable as line card, or backplane ports. It is an end-point free (switch) device in an sRIO network.
The CPS-16 receives packets from up to 16 ports. The CPS offers full support for normal switching as well as enhanced functions:
1) Normal Switching: All packets are switched in accordance with standard serial RapidIO specifications, with packet destination IDs determining
how the packet is routed.
Three major options exist within this category:
a. Multicast: If a Multicast ID is received, the CPS-16 performs a multicast as defined in the sRIO multicast registers.
b. Unicast: All other operations are performed as specified in sRIO.
c. Maintenance packets: As specified by sRIO.
The sRIO Switch supports a peak throughput of 40 Gbps which is the line rate for 16 ports in 1x configuration, each at 2.5 Gbps (3.125 Gbps minus
the sRIO-defined 8b10b encoding), and switches dynamically in accordance with the packet headers and priorities.
2) Enhanced functions
Enhanced features are provided for support of system debug. These features which are optional for the user consist of two major functions:
a. Packet Trace: The Packet Trace feature provides at-speed checking of the first 160 bits (header plus a portion of any payload) of every incom-
ing packet against user-defined comparison register values. The trace feature is available on all serial RapidIO ports, each acting inde-
pendently from one another. If the trace feature is enabled for a given port, every incoming packet is checked for a match against up to 4
comparison registers. In the event of a match, either of two possible user defined actions may take place:
i) not only does the packet route normally through the switch to its appropriate destination port, but this same packet is replicated and sent to
a “trace port.” The trace port itself may be any of the standard serial RapidIO ports. The port used for the trace port is defined by the user
through simple register configuration.
ii) the packet is dropped.
If there is no match, the packets route normally through the switch with no action taken.
The Packet Trace feature can be used during system bring-up and prototyping to identify particular packet types of interest to the user. It might
be used in security applications, where packets must be checked for either correct or incorrect tags in either of the header or payload. Identi-
fied (match) packets are then routed to the trace port for receipt by a host processor, which can perform an intervention at the software level.
b. Port Loopback: The CPS-16 offers internal loopback for each port that may be used for system debug of the high speed sRIO ports. By
enabling loopback on a given port, packets sent to the port’s receiver are immediately looped back at the physical layer to the transmitter -
bypassing the higher logical or transport layers.
c. Broadcast: Each multicast mask can be configured so that the source port is included among the destination ports of that multicast operation.
The CPS-16 can be programmed through any one or combination of sRIO, I
2
C, or JTAG. Note that any sRIO port may be used for programming. The
CPS-16 can also configure itself on power-up by reading directly from ROM over I
2
C in master mode.
IDT80KSW0002 Datasheet
CPS-16 Datasheet 47 April 6, 2016
5 Applications
Central switch based wireless processing
Figure 2 Application Overview
Note: The CPS-16 provides direct support for backplane connections using the serial RapidIO standard. The addition of an appropriate bridge (e.g.,
CPRI
sRIO) allows for further backplane flexibility, accommodating designs based on a wide range of standards such as CPRI, OBSAI, GbE or
PCIe.
In a macro wireless station, a switch-based raw data combination and distribution architecture is widely adopted. Switch based architecture provides
high flexibility and high resource efficiency. The raw data from the Radio Unit is distributed to one or more processing cards by unicast or multicast.
Aggregating raw data from processing cards to a buffer-less chain can be done by a fast non-blocking switch.
Media Gateway and general processing
Note: The CPS-16 provides direct support for backplane connections using the serial RapidIO standard.
Though SAR and RTP is usually processed by NP/Processor, DSP is more efficient for TDM conversion and compression. A low jitter switch enables
the full utilization of DSP processing power. Priority support, fast switching, and multicasting will differentiate class of traffic to provide QoS.
6 Functional Overview
IDT’s CPS-16 is optimized for either board-level DSP/ASIC cluster applications or module-level distributed processing application. Up to 16 serial
RapidIO ports fully meet the standard V1.3 specification. The physical lanes may be configured to work at 3.125Gbps, 2.5Gbps or 1.25Gbps and in
short haul or long haul.
The CPS-16 switch has a sustained 40Gbps bandwidth. Also three major options exist within this category:
a. Multicast: If a Multicast ID is received, the CPS-16 performs a multicast as defined by the device’s configurable sRIO multicast
mask registers. Also optional for broadcast.
b. Unicast: All other operations are performed as specified in sRIO.
c. Maintenance packets: As specified in sRIO.
The CPS-16 supports a “Store and Forward” and an optional “Cut Through” packet forward methodology. Refer to “CPS-16 User Manual” for details.
The CPS-16 can be programmed through a CPU or a DSP connected to one of the sRIO ports of the device or with a CPU connected to an I
2
C or
JTAG bus. It can also work along with a I
2
C configuration memory. This option is added to allow the CPS-16 to work in “remote stand alone” mode.
80KSW 0002
Serial RapidIO
DSPDSP
CPU
To/From
TDM based
To/From
IP based
WAN/Public

80KSW0002ALG

Mfr. #:
Manufacturer:
IDT
Description:
Switch ICs - Various 80KSW0002 Central Packet SW-16 ports
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

Products related to this Datasheet