MIPI® PHY Modules for SoC Development, Validation and Compliance Testing
Surender SharmaSam W. Beal
Arasan Chip Systems
Surender SharmaArasan Chip Systems
(408) [email protected]
Sam W. BealArasan Chip Systems
(408) [email protected]
MIPI PHY Modules for SoC Development, Validation and
Compliance Testing
MIPI Interfaces are used in a wide range of mobile devices, from smartphones to tablets with new applications emerging beyond mobile. SoC designers typically use FPGA-based prototyping boards for design, debug, validation and compliance.
Low-power high-speed SLVS I/Os for camera, display and storage (CSI, DSI, UFS) are typically not supported by FPGA vendors. Arasan has developed PHY modules to support this need.
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Outline
D-PHY and M-PHY Overview
Hardware PrototypingUse CasesArasan UFS HVP System
Arasan PHY ModulesD-PHY Module, System ExampleM-PHY Module, System Example
Summary
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What is D-PHY?
D-PHY OverviewMIPI defined I/O for display (DSI) and camera (CSI)
High-speed (HS) Low Power (LP) ModesHS SLVS 200mV differential up to 1.5GbpsLP LVCMOS 1.2V single-ended low speedSeparate clock and data lanes (up to 4 data lanes)
Not supported in standard FPGAs
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D-PHY Functional Diagram
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What is M-PHY?
M-PHY Overview• MIPI defined I/O for high speed and very low power• Adopted by JEDEC for next generation mobile storage (UFS)• Adopted by PCI-SIG for mobile PCIe• Adopted by USB for USB 3 chip to chip (SSIC)
High-speed / Low Power / Low pin count• 1 or 2 lanes SerDes• HS 1.2Gbps – 5.9Gbps (Gear 1, 2, 3)• LS 10Kbps – 576Mbps (Gear 0-7)
Not supported in standard FPGAs
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M-PHY Module InterfaceReference MPHY Module Interface (RMMI)
Physical Media Interface
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Hardware Prototyping – Use Cases
HostBoard
PHYTarget
PHY
Early Software Development
SoC Validation
SoC Demonstration
Compliance Testing
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Arasan UFS HVP Example
Memory CPU FPGA
Host Platform
ConnectivityIP BoardMotherboard
UFS Device or Host
Software Stack and Drivers for Linux
UFS & UniPro
Host RTL IP
M-PHYDigital & Analog IP
Device Platform
FPGA
Connectivity IP Board
MemoryCPU
Motherboard
UFS Device or Host
Software Stack and Drivers for Linux
UFS & UniPro DeviceRTL IP
M-PHYDigital & Analog IP
Hardware Platform Enables Early Software Development & Device Testing
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D-PHY Module
D-PHYTest Chip
FMC Connector SMA Connectors
PHY Protocol Interface PPI Physical Media Interface
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D-PHY Module Example
DSI Configuration
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D-PHY Development – loopback test
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M-PHY Module
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M-PHY Module
The board consists of ACS MIPI M-PHY test chipPower supply regulatorMultiple test points and mode switchesHigh speed SMA for differential signalingSamtec FMC for board to board connection
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