Integrated in the MAIN domain are five instances of high-speed differential interface implemented with Serializer/Deserializer (SERDES) Multi-protocol Multi-link modules:
- The 2L SerDes instantiations which are an implementation of a multi-protocol PCIe/USB/Ethernet PHY, consisting of a PIPE compliant multi-protocol (PCIe Gen1/2/3 and USB 3.0/3.1) PCS, IEEE 802.3 clause 72 link training modules, supporting different components (TAP controller, APB interface, PHY power control and Clock/Reset controller), and Physical Medium Attachment (PMA)
- The 4L SerDes is an implementation of a multi-protocol PHY, consisting of a PIPE compliant multi-protocol Physical Coding Sublayer (PCS), supporting components (TAP controller, APB interface, PHY power control and Clock/Reset controller), and PMA.
Device supports four 2L SerDes modules, each with the following main features:
- Two bidirectional lanes
- Supported lane configurations: x1 and x2
- Supported standards:
- PCIe Gen 1, 2 and 3
- USB 3.1 Gen 1
- Ethernet - SGMII/QSGMII
- Supports 'L1 PM Sub-states with CLKREQ' ECN
- Raw SerDes / Ethernet PHY 32/20-bit data interface with separate Rx and Tx source synchronous clocks
- For automotive safety applications, supports logic to monitor for successful PHY power state/data rate changes and generate an interrupt upon failure
- Provides option to automatically re-configure the PHY for a non-default configuration upon start-up (PHY auto-configuration)
- Supports multitude of high-speed data rates including (Gb/s): 1.25, 1.5, 2.5, 3.0, 3.125, 5.0, 6.0, 6.25, 8.0
- PHY (PMA integrated with PCS):
- ECNs included: L1 PM Sub-states CLKREQ; SRIS
- USB3.1 per Universal Serial Bus 3.1 Specification, Revision 1.0
- QSGMII Specification revision 1.2
- Selectable serial pin polarity reversal for both transmit and receive paths
- Up to two reference clock sources for mixed standard multi-lane link applications
- Capable of equalizing up to 30dB total loss channels
- Receiver data recovery path:
- Includes 5-tap DFE with adaptive training.
- Supports far-end transmit pre-cursor and post-cursor adaptive training
- Includes adaptive offset correction and gain control
- Periodic on-the-fly training updates maintain optimization with drifting environment
- Receiver clock recovery path:
- Tracks frequency offset of +/-5700ppm or greater where +/- 700 PPM is considered static and the remainder is from spread-spectrum techniques (SSC)
- Includes CTLE with adaptive equalization
- Includes adaptive phase offset correction
- Supports on-the-fly eye and bathtub curve diagramming with 8-bit voltage amplitude resolution and up to 1/64 UI time resolution
- Data path built-in self-test (BIST) with programmable pattern generation and error detection
- Serial bit stream and parallel word loopback for both line and parallel side
- Analog Test Bus (ATB) for internal node monitoring during characterization
- 8-bit ADC provides digitized ATB measurement results over configuration bus
- Supports DC and AC JTAG (boundary scan) per IEEE 1149.6
- Automatic calibration of pin termination resistors
Device supports one 4L SerDes with the following main features:
- Four bidirectional lanes
- Supported lane configurations: all lane configurations from x1 to x4
- Supported standards:
- SGMII/QSGMII
- Embedded DisplayPort Tx (UI_Rate_1 - UI_Rate_8)
- Single protocol, independent multiple links (where N is the number of lanes) support for:
- eDP Tx link can be 1, 2, or 4 lanes
- N SGMII links.
- Simultaneous multi-protocol support for various combinations (including Multiple Ethernet links + 1x eDP Tx link)
- Raw SerDes interface with separate Tx and Rx source synchronous clocks
- Supports PCIe 'L1 PM Sub-states with CLKREQ'
- For automotive safety applications, supports logic to monitor for successful PHY power state/data rate changes and generate an interrupt upon failure
- Dual on-chip PLLs which accepts a wide range of reference clocks
- Supports spread spectrum generation (up to 5000 PPM)
- PLL lock status
- Single off-chip resistor required
- Automatic calibration for on-chip termination resistors
- 20-bit/16-bit parallel data transceiver interface
- Support for external differential reference clock
- Support for internal single-ended reference clock
- Decision feedback equalization with 3-tap adaptive decision feedback equalization with adaptive CTLE and offset correction
- Supports bifurcation link combinations from 1 to 4 lanes per link
- Robust clock/data recovery tracks static frequency offset of +/- 350 PPM, and spread spectrum up to 5000 PPM
- Support for IEEE 1149.6 boundary scan
- Serial and parallel loop-back functions
- BIST functions for manufacturing test including multiple pattern generator/error detector
- Analog Test Bus for test and characterization
- 8-bit digitized ATB measurement system
- On demand eye/bathtub curve measurement capability