Overview
Atria Logic Pvt. Ltd. provides the complete design services for PCI Express. (2.5GT/s, 5GT/s) Our expertise overs the breadth of PCI-SIG’s 3.0 specification of PCIe. We have a highly skilled team of experts who can deliver the services on PCIe physical layer including
MAC
PCS
PIPE interface (8 bit, 16 bit and 32 bit interface)
Scrambler
The PHY layer is essentially the PIPE (Physical Interface for PCIe Express). The designed PIPE interface follows the INTEL’s PIPE spec. This Intel's spec is being used by other vendors like Xilinx, Altera and PLDA with slight modifications in LTSSM and power management states. However the basic Interface mentioned in Intel's spec is maintained by all vendors and so our design.
The main goal of Physical Layer is to establish the physical connection or channel for proper communication of transactions coming from above layer (Transaction Layer and Data Link Layer).
The main functions of Tx side of PHY layer are listed below
Link training through ordered sets TS1 & TS2
Insertion of SKP ordered sets every 1538 symbols for elastic buffer overflow/underflow management.
Sending Logical Idles in particular state of LTSSM and whenever there is no data available to send.
Sending ElOS (Electrical Idle) as dictated by ASPM and Software Power management.
Sending FTS(Fast Training Sequence) ordered sets whiling coming back to active state from Low power state.
Generation of PIPE signals which includes
Tx_data[32 or 16 bit]
D/K [4 or 2bit]
Tx_Elec_Idle
Tx_Compliance
Rate[1:0]
Width [1:0]
Pwr_dwn[2:0]
Reset_PhY
TxdetectRx
Insertion of STP, SDP, END kontrol characters (Implemented in DLL)
All the Data packets except Kontrol characters and ordered sets will pass through scrambler.
Learn more about Single-Protocol PHY IP core
High Bandwidth Memory (HBM) is a high-performance 3D-stacked DRAM. It is a technology which stacks up DRAM chips (memory die) vertically on a high speed logic layer which are connected by vertical interconnect technology called TSV (through silicon via) which reduces the connectivity impedance and thereby total power consumption.
With ever increasing need for very high operating frequency of graphics (GPU) or general purpose (CPU) processors, the limited memory bandwidth forms a bottleneck to extract maximum performance out of a system. To add to this, low power consumption, form factor of the memory devices also play significant roles in optimal and efficient solutions.
UniversalFlash Storage (UFS) was created for mobile applications and computer systems requiring high performance and low power consumption. These systems typically use embedded Flash based on the JEDEC standard eMMC. UFS was defined by JEDEC as the evolutionary replacement for eMMC offering significantly higher memory bandwidth. The standard builds on existing standards such as the SCSI command set, the MIPI Alliance M-PHY and UniPro as well as eMMC form factors to simplify adoption and development.
In this paper, we introduce a new high-level, dataflow programming language called C~ (“C flow”) that further increases productivity by raising the level of abstraction from behavioral descriptions, while overcoming the limitations of C for hardware design. We present the syntax and semantics of this language, and the framework that provides hardware and software code generation. This paper illustrates the benefits of using C~ for hardware design of a IEEE 802.3 MAC, synthesized for FPGA and for 90nm CMOS technology.
Universal Flash Storage (UFS) was created for mobile applications and computer systems requiring high performance and low power consumption. These systems typically use embedded Flash based on the JEDEC standard eMMC. UFS was defined by JEDEC as the evolutionary replacement for eMMC offering significantly higher memory bandwidth. The standard builds on existing standards such as the SCSI command set, the MIPI Alliance M-PHY and UniProSM as well as eMMC form factors to simplify adoption and development.
Since MIPI and MDDI standards both target interfaces to cameras and displays on mobile devices, are two separate standards really needed?
