6.144-Gbps Support Capability In Cyclone V Gt Devices - Altera Cyclone V Device Handbook

CV-53004
2013.10.17
Figure 4-30: Example of the OBSAI BTS Architecture
Using the deterministic latency option, you can implement the CPRI data rates in the following modes:
• Single-width mode—with 8/10-bit channel width
• Double-width mode—with 16/20-bit channel width
Table 4-10: Sample Channel Width Options for Supported Serial Data Rates
Serial Data Rate (Mbps)
614.4
1228.8
2457.6
3072
4915.2
(13)
6144

6.144-Gbps Support Capability in Cyclone V GT Devices

Cyclone V GT devices support a 6.144 Gbps data rate for the CPRI protocol only. For CPRI 6.144-Gbps
transmit jitter compliance, Altera recommends you use only up to three full-duplex channels for every two
transceiver banks. The transceivers are grouped in banks of three channels. For transceiver bank information,
refer to the Transceiver Architecture in Cyclone V Devices chapter.
The maximum number of CPRI channels allowed for 9-channel and 12-channel devices is as follows. The
same limitation applies to devices with fewer transceiver channels.
(13)
6144 Mbps is supported only for the CPRI protocol in the C5 and I5 speed grades.
Transceiver Protocol Configurations in Cyclone V Devices
Send Feedback
Baseband
Transport Module
RP2 (1)
Interface Switch
Proprietary
Control
Module(s)
& Clock
(1) RP = Reference Point
Single Width
8-Bit
Yes Yes
Yes Yes
No Yes
No Yes
No No
No No
6.144-Gbps Support Capability in Cyclone V GT Devices
System Software
RF Module
Module
RP3 (1)
BB
RFM
Clock and Sync
RP1 (1)
Power System
Channel Width (FPGA-PCS Fabric)
16-Bit 16-Bit
No
Yes
Yes
Yes
No
No
Control
Module
Double-Width
32-Bit
No
Yes
Yes
Yes
Yes
Yes
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