Basic Mode

Many applications require proprietary functionality not offered by mainstream protocols. For these applications, Altera® transceivers offer 'basic' mode. Basic mode allows access to the building blocks within the transceiver. These can be individually configured or bypassed to meet your proprietary transceiver requirements.

Tables 1 and 2 list the basic modes available in Altera's transceiver devices and provide a list of the transceiver physical coding sublayer (PCS) blocks available in this mode.

Table 1. 3G/6G Basic Modes and PCS Blocks

Transceiver Feature Stratix® V
Stratix IV
Stratix II GX FPGAs Arria® II
Arria V
Cyclone® IV GX FPGAs
Data Rates (Gbps)0.6 to 8.50.6 to 8.5
(Stratix IV GT, Stratix IV GX)
0.6 to 6.3750.6 to 6.3750.6 to 10.3750.6 to 3.125
Basic Mode Channel BondingYesYesNoYesYesYes
Possible Reference Clock (MHz)50.0 to 622.0850.0 to 622.0850.0 to 622.0850.0 to 622.0827 to 7105.0 to 472.5
FPGA Bus Width (Bits)8, 10, 16, 20, 32, 408, 10, 16, 20, 32, 408, 10, 16, 20, 32, 408, 10, 16, 208, 10, 16, 20, 32, 40, 808, 10, 16, 20
8B/10B Encode/DecodeCheckCheckCheckCheckCheckCheck
Dedicated Synchronization State MachineCheckCheckCheckCheckCheckCheck
Word AlignCheckCheckCheckCheckCheckCheck
Rate MatchCheckCheckCheckCheckCheckCheck
Byte Serialize/ DeserializeCheckCheckCheckCheckCheckCheck
Phase Compensation FIFOCheckCheckCheckCheckCheckCheck
Dynamic ReconfigurationCheckCheckCheckCheckCheckCheck
Byte OrderingCheckCheckCheckCheckCheckCheck
Single Bit SlipCheckCheckCheckCheckCheckCheck

Table 2. 10G Basic Modes and PCS Blocks

Transceiver Feature Stratix V GT, GX, and GS FPGAs Stratix IV GT FPGAs
Data Rates (Gbps)9.9 to 12.59.9 to 11.3
Basic Mode Channel BondingYesYes
Possible Reference Clock (MHz)50.0 to 622.0850.0 to 622.08
FPGA Bus Width (Bits)32, 40, 6440
Word AlignCheckCheck
Phase Compensation FIFOCheckCheck
Dynamic ReconfigurationCheckCheck
64B/66B Encode/DecodeCheck-
Gearbox (Reduction/Expansion)Check-
Block SynchronizationCheck-
Receive Bit SlipCheck-
Transmit Bit SlipCheck-


Basic mode is available as a transceiver configuration option within Quartus® Prime design software. Once you select basic mode, Quartus Prime design software guides you through configuration options for each of the available blocks. Collateral is also available to support the basic transceiver modes, including a generic characterization report, user guides, transceiver simulation models, and design kits for industry-standard PCB and layout simulation tools.