MIPI interface

I. MIPI MIPI (Mobile Industry Processor Interface) yog ib lub ntsiab lus rau Mobile Industry Processor Interface.
MIPI (Mobile Industry Processor Interface) yog tus qauv qhib rau cov ntawv thov mobile processors pib los ntawm MIPI Alliance.

Cov lus qhia tshwj xeeb uas tau ua tiav thiab nyob hauv txoj kev npaj muaj raws li hauv qab no: Sau ib daim duab piav qhia ntawm no
Thib ob, MIPI ALLIANCE's MIPI DSI SPECIFICATION
1, npe txhais
CovCS ntawm DCS (DisplayCommandSet) yog txheej txheem txheej txheem ntawm cov lus txib rau cov zaub modules hauv hom lus txib.
DSI, CSI (DisplaySerialDisplay, CameraSerialInterface)
DSI txhais lub high-speed serial interface ntawm lub processor thiab cov zaub module.
CSI txhais qhov kev sib txuas ceev ceev ntawm lub processor thiab lub koob yees duab module.
D-PHY: Muab cov txheej txheem lub cev txhais rau DSI thiab CSI
2, DSI txheej txheej
DSI muab faib ua plaub txheej, sib xws rau D-PHY, DSI, DCS specification, hierarchical qauv daim duab raws li nram no:
PHY txhais qhov nruab nrab kis tau tus mob, lub input / output circuit, thiab lub moos thiab teeb liab mechanism.
Txoj Kev Tswj Txheej Txheem: Xa thiab sau cov ntaub ntawv ntws mus rau txhua txoj kab.
Low Level Protocol txheej: txhais li cas thav ntawv thiab cov kev daws teeb meem raug teeb tsa, tshawb pom qhov yuam kev, thiab lwm yam.
Daim ntawv thov txheej: piav qhia qib siab encoding thiab parsing cov ntaub ntawv ntws.

Sau ib daim duab piav qhia ntawm no
3, Hais kom ua thiab Video hom
DSI-compatible peripherals txhawb Command lossis Video kev khiav hauj lwm hom, hom twg yog txiav txim los ntawm peripheral architecture Command hom hais txog kev xa cov lus txib thiab cov ntaub ntawv mus rau tus maub los nrog cov zaub cache.Tus tswv tsev indirectly tswj lub peripheral los ntawm cov lus txib.
Kev hais kom ua hom siv ob-txoj kev interface Video hom hais txog kev siv cov duab tiag tiag los ntawm tus tswv tsev mus rau qhov khoom siv.Hom no tsuas yog kis tau ntawm kev kub ceev xwb.

Txhawm rau txo qhov nyuaj thiab txuag cov nqi, cov tshuab video nkaus xwb yuav tsuas muaj ib txoj hauv kev cov ntaub ntawv xwb
Taw qhia rau D-PHY
1, D-PHY piav qhia txog synchronous, high-speed, low-power, low-cost PHY.
Ib qho PHY configuration suav nrog
Ib txoj kab moos
Ib los yog ntau tshaj cov ntaub ntawv kab
PHY teeb tsa rau ob txoj kab yog qhia hauv qab no
Sau ib daim duab piav qhia ntawm no
Peb hom kab loj
Ib-txoj kev moos Kab
Ib-txoj kev data Lane
Ob-txoj kev data Lane
D-PHY kis tau tus mob hom
Tsawg-power (Low-Power) teeb liab hom (rau kev tswj): 10MHz (max)
High-speed teeb liab hom (rau cov ntaub ntawv ceev kis tau tus mob): 80Mbps rau 1Gbps / Txoj kab
D-PHY cov txheej txheem qis qhia tau hais tias qhov tsawg kawg nkaus ntawm cov ntaub ntawv yog ib byte
Thaum xa cov ntaub ntawv, nws yuav tsum qis qis rau pem hauv ntej thiab siab hauv qab.
D-PHY rau cov ntawv thov mobile
DSI: Zaub serial interface
Ib txoj kab moos, ib txoj kab los yog ntau dua cov ntaub ntawv
CSI: Lub Koob Yees Duab Serial Interface
2, Txoj kab module
PHY muaj D-PHY (Lane Module)
D-PHY tuaj yeem muaj:
Tsawg-power transmitter (LP-TX)
Tsawg-power receiver (LP-RX)
Kev kub ceev transmitter (HS-TX)
High-speed txais (HS-RX)
Tsawg-power Competitive Detector (LP-CD)
Peb hom kab loj
Ib-txoj kev moos Kab
Master: HS-TX, LP-TX
Tus qhev: HS-RX, LP-RX
Ib-txoj kev data Lane
Master: HS-TX, LP-TX
Tus qhev: HS-RX, LP-RX
Ob-txoj kev data Lane
Master, Slave: HS-TX, LP-TX, HS-RX, LP-RX, LP-CD
3, Txoj kab hauv xeev thiab voltage
Txoj Kev Xeev
LP-00, LP-01, LP-10, LP-11 (ib zaug xwb)
HS-0, HS-1 (qhov txawv)
Txoj kab hluav taws xob (tus qauv)
Lub hwj chim: 0-1.2V
Hwj chim: 100-300mV (200mV)
4, kev ua haujlwm hom
Peb hom kev khiav hauj lwm rau Data Lane
Kev khiav tawm hom, High-Speed ​​hom, Tswj hom
Cov xwm txheej tshwm sim los ntawm lub xeev nres ntawm kev tswj hwm yog:
Kev thov kev khiav tawm (LP-11-LP-10-LP-00-LP-01-LP-00)
Kev thov hom kev kub ceev (LP-11-LP-01-LP-00)
Kev thov hloov pauv (LP-11-LP-10-LP-00-LP-10-LP-00)
Kev khiav tawm hom yog kev ua haujlwm tshwj xeeb ntawm cov ntaub ntawv Txoj kab hauv LP xeev
Hauv hom no, koj tuaj yeem nkag mus rau qee qhov haujlwm ntxiv: LPDT, ULPS, Trigger
Cov Ntaub Ntawv Txoj Kev nkag mus rau hom Escape ntawm LP-11- LP-10-LP-00-LP-01-LP-00
Ib zaug nyob rau hauv Escape hom hom, tus xa yuav tsum xa 1 8-ntsis hais kom ua teb rau qhov kev thov
Kev khiav tawm hom siv Spaced-One-Encoding Kub
Ultra-Low Power State
Hauv lub xeev no, kab yog khoob (LP-00)
Lub xeev lub zog qis qis ntawm Clock Lane
Clock Lane nkag mus rau ULPS xeev ntawm LP-11-LP-10-LP-00
- Tawm hauv lub xeev no ntawm LP-10, TWAKEUP, LP-11, TWAKEUP tsawg kawg yog 1ms
High-speed cov ntaub ntawv kis tau tus mob
Txoj cai ntawm kev xa cov ntaub ntawv ceev ceev yog hu ua cov ntaub ntawv ceev ceev lossis ua kom tawg (tawg)
Txhua lub qhov rooj Lanes pib synchronously thiab lub sijhawm kawg yuav txawv.
Lub moos yuav tsum nyob rau hauv high-speed hom
Cov txheej txheem hloov mus rau hauv txhua hom kev ua haujlwm
Cov txheej txheem nkag mus rau hom kev khiav: LP-11- LP-10- LP-00-LP-01-LP-01-LP-00- Nkag Code-LPD (10MHz)
Cov txheej txheem ntawm kev khiav tawm hom: LP-10-LP-11
Cov txheej txheem nkag mus rau hom kev kub ceev: LP-11- LP-01-LP-00-SoT (00011101) - HSD (80Mbps rau 1Gbps)
Cov txheej txheem ntawm kev tawm hauv high-ceev hom: EoT-LP-11
Tswj hom - BTA cov txheej txheem kis tau tus mob: LP-11, LP-10, LP-00, LP-10, LP-00
Tswj hom - BTA tau txais txheej txheem: LP-00, LP-10, LP-11

Lub xeev hloov daim duab

Sau ib daim duab piav qhia ntawm no
Introduction to DSI
1, DSI yog Lane extensible interface, 1 moos Kab / 1-4 cov ntaub ntawv Txoj kab
DSI-compatible peripherals txhawb 1 lossis 2 hom kev ua haujlwm yooj yim:
Hom lus txib (zoo ib yam li MPU interface)
Video hom (zoo ib yam li RGB interface) - Cov ntaub ntawv yuav tsum raug xa mus rau hauv hom kev kub ceev kom txhawb nqa cov ntaub ntawv hloov hauv 3 hom
Non-burst Synchronous mem tes hom
Non-Burst Synchronous Event Hom
Hom tawg
Kis hom:
High-speed signaling mode (High-Speed ​​signaling mode)
Tsawg-power signaling mode (Low-Power signaling mode) - tsuas yog cov ntaub ntawv kab 0 ( moos txawv lossis tuaj ntawm DP, DN).
Ncej hom
Short thav duab: 4 bytes (taag)
Ntev thav duab: 6 mus rau 65541 bytes (variable)
Ob qho piv txwv ntawm cov ntaub ntawv ceev ceev Lane kis tau tus mob
Sau ib daim duab piav qhia ntawm no
2, luv ncej qauv
Ncej taub hau (4 bytes)
Data Identification (DI) 1 byte
Ncej cov ntaub ntawv - 2 bytes (ntev tsau rau 2 bytes)
Error Detection (ECC) 1 byte
Ncej loj
Qhov ntev yog tsau rau 4 bytes
3, ntev ncej qauv
Ncej taub hau (4 bytes)
Data Identification (DI) 1 byte
Cov ntaub ntawv suav - 2 bytes (tus naj npawb ntawm cov ntaub ntawv sau)
Error Detection (ECC) 1 byte
Cov ntaub ntawv sau (0 rau 65535 bytes)
Length s.WC?bytes
Xaus ntawm ncej: checksum (2 bytes)
Ncej loj:
4 s (0 rau 65535) thiab 2 s 6 rau 65541 bytes
4, thav duab cov ntaub ntawv hom Ntawm no yog cov duab piav qhia ntawm tsib, MIPI DSI teeb liab ntsuas piv txwv 1, MIPI DSI teeb liab ntsuas daim ntawv qhia 2 hauv Low Power mode, MIPI D-PHY thiab DSI kis tau tus mob hom thiab kev ua haujlwm hom...D-PHY thiab DSI kis tau tus mob hom, tsis tshua muaj zog (Low-Power) teeb liab hom (rau kev tswj): 10MHz (max) - High Speed ​​signal mode (rau high-speed data transmission): 80Mbps to 1Gbps / Lane - D-PHY mode kev khiav hauj lwm - Kev khiav tawm hom, High-Speed ​​(Burst) m ode, Tswj hom, DSI hom kev ua hauj lwm, Command hom (zoo ib yam li MPU interface) - Video hom (zoo ib yam li rGB interface) - Cov ntaub ntawv yuav tsum tau kis nyob rau hauv high-ceev hom 3, cov lus xaus me me - hom kev sib kis thiab kev ua haujlwm yog cov ntsiab lus sib txawv...Cov kis tau tus mob ntawm High-Speed ​​yuav tsum tau siv nyob rau hauv Video hom kev khiav hauj lwm hom.Txawm li cas los xij, hom lus txib hom feem ntau yog siv los nyeem thiab sau cov ntawv sau npe thaum LCD modules pib, vim tias cov ntaub ntawv tsis raug yuam kev thiab yooj yim los ntsuas ntawm qhov nrawm.Video hom tseem tuaj yeem xa cov lus qhia siv High-Speed, thiab Command Hom kuj tseem tuaj yeem siv High-Speed ​​operating hom, tab sis nws tsis tsim nyog ua li ntawd.