BU90T81-E2

LVDS Interface ICs 27bit LVDS Transmitter BU90T81 ●General Description The BU90T81 transmitter operates from 20MHz to 112MHz wide clock range, and 27bits data of parallel LVCMOS level inputs(R/G/B24bits and VSYNC,HSYNC,DE) are converted to four channels of LVDS data stream. Data is transmitted seven times (7X) stream and reduce cable number by 3(1/3) or less. The BU90T81 operates from a single 1.8V supply for low power. And the BU90T81 has low swing mode to be able to expect further low power and low EMI . ●Key Specifications ▆Supply Voltage range ▆Operating frequency ▆Operating Temperature Range ▆Power Consumption ●Features ▆24bits data of parallel LVCMOS level inputs are converted to four channels of LVDS data stream. ▆Support clock frequency from 20MHz up to 112MHz. ▆Low power 1.8V CMOS design ▆Power down mode ▆Clock edge selectable ▆Support 6bit/8bit mode selectable ▆Support reduced swing LVDS for low EMI. ▆Support LVDS Outputs pin reverse function ▆Support spread spectrum clock generator input ●Applications ▆Tablet ▆Netbook PC ▆Digital Picture Frame ●Packages VBGA048W040 1.65 to 1.95 V 20 to 112MHz –20 to 85℃ 50mW(Typ) 4.00 ㎜×4.00 ㎜×0.90 ㎜ ●Block Diagram LVCMOS Input LVDS CLKIIN (20-112MHz) PLL Output TCLK +/(20-112MHz) 8 R[7:0] TA +/8 G[7:0] TB +/- 8 B[7:0] Parallel to Serial HSYNC TC +/- VSYNC DE TD +/FLIP 6B8B RS[1:0] RF XRST Figure-1 Block Diagram ○Product structure：Silicon monolithic integrated circuit ○This product is not designed protection against radioactive rays www.rohm.com © 2012 ROHM Co., Ltd. All rights reserved. TSZ22111・14・001 1/11 TSZ02201-0L2L0V100010-1-2 23.JAN.2012 Rev.001 Datasheet BU90T81 ●Pin Configuration Top view 1 2 3 4 5 6 7 A G[5] G[7] R[1] R[3] R[5] R[6] R[7] B - G[6] R[0] R[2] R[4] TA- TA+ C G[3] G[4] GND RS[1] RS[0] TB- TB+ D G[1] G[2] RF VDD VDD TC- TC+ E G[0] B[7] FLIP 6B8B GND TCLK- TCLK+ F B[6] B[5] B[2] B[0] G B[4] B[3] B[1] HSYNC VSYNC CLKIN XRST DE TD- TD+ 48pin VBGA Figure-2 Pin Diagram (Top View) ●Pin Description Pin Name TA+/-, TB+/-, TC+/-,TD+/TCLK+/- Pin No. Type B7,B6,C7,C6,D7,D6,F7,F6 LVDS OUT E7,6 R[7:0] A7,A6,A5,B5,A4,B4,A3,B3 G[7:0] A2,B2,A1,C2,C1,D2,D1,E1 B[7:0] HSYNC,VSYNC, DE CLKIN E2,F1,F2,G1,G2,F3,G3,F4 XRST G7 RF D3 CMOS IN Descriptions LVDS Data out LVDS Clock out Pixel and control data inputs G4,G5,F5 G6 Clock input Power Down H：Normal operation L：Power down ( all LVDS output signal are Hi-z) Input CLK Triggering Edge Select. H：Rising edge L：Falling edge LVDS swing mode select RS[1:0] C3,C5 CMOS IN RS0 L H L H LVDS swing TYP=160ｍV TYP=200ｍV TYP=350ｍV Reserved 6bit/8bit mode select H : 6bit mode(FLIP=L TD+/- is Hiz) (FLIP=H TA+/- is Hiz) L : 8bit mode LVDS output pin reverse select. H : Reverse L : Normal 6B8B E4 FLIP E3 VDD D4,D5 POWER GND C3,E5 GND www.rohm.com © 2012 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 RS1 L L H H 2/11 1.8V Power supply Ground Pins TSZ02201-0L2L0V100010-1-2 23.JAN.2012 Rev.001 Datasheet BU90T81 ●Absolute Maximum Ratings Rating Parameter Symbol Units Min Max Supply Voltage VDD -0.3 2.5 V Input Voltage VIN -0.3 VDD+0.3 V Output Voltage VOUT -0.3 VDD+0.3 V Storage Temperature Range Tstg -55 125 ℃ ●Operating Ratings Rating Units Symbol Parameter Min Typ Max Supply Voltage VDD 1.65 1.8 1.95 V Operating Temperature Range Topr -20 - 85 ℃ Operating frequency Fmax 20 - 112 MHz Conditions ●Package Power Package Power Dissipation (mW) De-rating (mW/℃)＊１ VBGA048W040 800＊１ 8.0＊１ *１:Package power when mounting on the PCB board. The size of PCB board The material of PCB board : 114.3×76.2×1.6（mm3） : The FR4 glass epoxy board. ●DC characteristics Table 1 : LVCMOS DC Specifications（VDD=1.65V～1.95V, Ta=-20℃～+85℃） Rating Symbol Parameter Units Min Typ Max VIH High Level Input Voltage VDD×0.7 - VDD V VIL Low Level Input Voltage GND - VDD×0.3 V IINC Input Current -10 - +10 μA Conditions 0V≤VIN≤VDD Table2: LVDS Transmitter DC Specifications（VDD=1.65V～1.95V, Ta=-20℃～+85℃） Rating Symbol VOD Parameter Differential Output Voltage Units Min Typ Max 250 350 450 mV 130 200 270 mV 110 160 210 mV Conditions RS[1:0]= HL RL=100Ω RS[1:0]= LH RS[1:0]= LL ΔVOD Change in VOD between complementary output states - - 35 mV VOC Common Mode Voltage 1.125 1.25 1.375 V ΔVOC Change in VOC between complementary output states - - 35 mV IOS Output Short Circuit Current -90 - - mA VOUT=0V IOZ Output TRI-STATE Current -10 - +10 μA XRST=0V, VOUT=0V to VDD www.rohm.com © 2012 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 3/11 RL=100Ω TSZ02201-0L2L0V100010-1-2 23.JAN.2012 Rev.001 Datasheet BU90T81 ●AC characteristics Table 3 : Switching Characteristics（VDD=1.8V, Ta=25℃ RL=100Ω CL=5ｐF RS[1:0]=HL） Parameter Symbol Min Typ Max Units tTCP CLK OUT Period 8.93 - 50 ns tTCIT CLK IN Transition time - - 5.0 ns tTCH CLK IN High Time 0.35tTCP 0.5tTCP 0.65tTCP ns tTCL CLK IN Low Time 0.35tTCP 0.5tTCP 0.65tTCP ns tTS LVSMOS Data Set up to CLK IN 2.5 - - ns tTH LVCMOS Data Hold from CLK IN 0 - - ns LVDS Transition Time - 0.6 1.5 ns CLKOUT=112MHz - - 200 ｐs CLKOUT=112MHz - - 200 ｐs tLVT Differential Output Set up Time Differential Output Hold time TTSUP TTHLD tTOP6 Output Data Position 6 tTOP5 Output Data Position 5 tTOP4 Output Data Position 4 tTOP3 Output Data Position 3 tTOP2 Output Data Position 2 tTOP1 Output Data Position 1 tTOP0 Output Data Position 0 tTPLL Phase Locked Loop Set Time tTCP - TTHLD 7 tTCP - TTHLD 3 7 tTCP - TTHLD 4 7 tTCP 5 - TTHLD 7 tTCP - TTHLD 6 7 tTCP - TTHLD 7 7 tTCP 8 - TTHLD 7 2 tTCP 7 tTCP 3 7 tTCP 4 7 tTCP 5 7 tTCP 6 7 tTCP 7 7 tTCP 8 7 tTCP + TTSUP 7 tTCP 3 + TTSUP 7 tTCP 4 + TTSUP 7 tTCP 5 + TTSUP 7 tTCP 6 + TTSUP 7 tTCP 7 + TTSUP 7 tTCP 8 + TTSUP 7 2 - 2 - 10 ns ns ns ns ns ns ns ｍs ●AC Timing Diagrams LVCMOS Input tTCP CLKIN LVCMOS Input 90% t TCH 90% RF=L 10% CLKIN 10% V DD /2 V DD/2 tTCL tTCIT tTCIT V DD/2 tTS RF=H tTH LVDS Output Vdiff=(Tx+)-(Tx-) DATA_IN Tx+ Vdiff CL RL 80% V DD/2 80% 20% V DD/2 tTCD TCLK+ 20% V OC Tx- TCLK- LVDS Output Load tLVT t LVT x=A,B,C.D,CLK DATA_IN= R[7:0], G[7:0], B[7:0], VSYNC, HSYNC, DE Figure-3 LVCMOS Input AC Timing Diagrams www.rohm.com © 2012 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 4/11 TSZ02201-0L2L0V100010-1-2 23.JAN.2012 Rev.001 Datasheet BU90T81 TCLK OUT (Differential) TA+/- G[2] R[7] R[6] R[5] R[4] R[3] R[2] TB+/- B[3] B[2] G[7] G[6] G[5] G[4] G[3] TC+/- DE VSY NC HSY NC B[7] B[6] B[5] B[4] TD+/- L B[1] B[0] G[1] G[0] R[1] R[0] Previous Cycle tTOP1 tTOP0 tTOP6 tTOP5 tTOP4 tTOP3 tTOP2 Next Cycle Figure-4 LVDS Output AC Timing Diagrams ●Phase Locked Loop Set Time 1.65 V DD V DD V DD×0.7 XRST tTPLL CLKIN V diff=0V TCLK+/- Figure-5 Phase Locked Loop Set Time www.rohm.com © 2012 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 5/11 TSZ02201-0L2L0V100010-1-2 23.JAN.2012 Rev.001 Datasheet BU90T81 ●Supply Current Table 4: Supply Current (6B8B = L) Symbol ITCCG ITCCW ITCCS Parameter Min Rating Typ Max - 30.4 - mA RL=100Ω,CL=5pF VDD=1.8V,RS[1:0]=HL Gray Scale Pattern f=85MHz - 22.5 - mA RL=100Ω,CL=5pF VDD=1.8V,RS[1:0]=LH Gray Scale Pattern f=85MHz - 20.4 - mA RL=100Ω,CL=5pF VDD=1.8V, RS[1:0]=LL Gray Scale Pattern f=85MHz - 32.4 - mA RL=100Ω,CL=5pF VDD=1.8V, RS[1:0]=HL Worst case Pattern f=85MHz - 24.5 - mA RL=100Ω,CL=5pF VDD=1.8V, RS[1:0]=LH Worst case Pattern f=85MHz - 22.4 - mA RL=100Ω,CL=5pF VDD=1.8V, RS[1:0]=LL Worst case Pattern f=85MHz - - 10 μA Transmitter Supply Current Transmitter Supply Current Transmitter Power Down Supply Current Units Conditions XRST=L Gray Scale Pattern CLKIN D[0] D[1] D[2] D[3] D[4] D[5] D[6] D[7] D=R,G,B Figure -6 Gray Scale Pattern Worst Case Pattern (Maximum Power condition) CLKIN D[0] D[1] D[2] D[3] D[4] [ D[5] D[6] D[7] D=R,G,B Figure -7 Worst Case Pattern www.rohm.com © 2012 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 6/11 TSZ02201-0L2L0V100010-1-2 23.JAN.2012 Rev.001 Datasheet BU90T81 ●LVDS Data Output Table for Function of FLIP pin Table 5: LVDS Data Output Pin Name Output Pin Names Pin No FLIP=L FLIP=H B7 TA+ TD- B6 TA- TD+ C7 TB+ TCLK- C6 TB- TCLK+ D7 D6 E7 TC+ TCTCLK+ TCTC+ TB- E6 TCLK- TB+ F7 F6 TD+ TD- TATA+ TA- TA+ TD+ TD- TB- TB+ TCLK+ TCLK- TC- TC+ TCLK- TCLK+ TD- TD+ FLIP=L TC+ TC- TB+ TB- TA+ TA- FLIP=H ●LVCMOS Data Inputs Pixel Map Table Table 6: LVCMOS Data Inputs Pixel Map Table TFT Panel Data LSB 24Bit 18Bit R0 - BU90T81 Input R0 R1 - R0 R2 R0 R1 R3 R1 R2 R4 R2 R3 R5 R3 R4 R6 R4 R5 MSB R7 R5 R6 LSB G0 - R7 G1 - G0 G2 G0 G1 G3 G1 G2 G4 G2 G3 G5 G3 G4 G6 G4 G5 MSB G7 G5 G6 LSB B0 - G7 MSB B1 - B0 B2 B0 B1 B3 B1 B2 B4 B2 B3 B5 B3 B4 B6 B4 B5 B7 B5 B6 VSYNC VSYNC B7 HSYNC HSYNC HSYNC DE DE DE www.rohm.com © 2012 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 7/11 TSZ02201-0L2L0V100010-1-2 23.JAN.2012 Rev.001 Datasheet BU90T81 ●LVDS Output Data Mapping TCLK OUT (Differential) TA+/- G[2] R[7] R[6] R[5] R[4] R[3] R[2] TB+/- B[3] B[2] G[7] G[6] G[5] G[4] G[3] TC+/- DE VSY NC HSY NC B[7] B[6] B[5] B[4] TD+/- L B[1] B[0] G[1] G[0] R[1] R[0] Figure-8 LVDS output mapping (6B8B=L, FLIP=L) TCLK OUT (Differential) TA+/- G[2] R[7] R[6] TB+/- B[3] B[2] G[7] G[6] G[5] G[4] G[3] TC+/- DE VSY NC HSY NC TD+/- R[5] B[7] R[4] B[6] R[3] B[5] R[2] B[4] Hiz Figure-9 LVDS output mapping (6B8B=H, FLIP=L) www.rohm.com © 2012 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 8/11 TSZ02201-0L2L0V100010-1-2 23.JAN.2012 Rev.001 Datasheet BU90T81 ●Typical Application Circuit ( 24bit mode) Example BU90T81: LVCMOS Data Input /rising edge/200mV swing output/normal output mapping Figure-10 Application Circuit (24bit mode) www.rohm.com © 2012 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 9/11 TSZ02201-0L2L0V100010-1-2 23.JAN.2012 Rev.001 Datasheet BU90T81 ●Typical Application Circuit ( 18bit mode) Example BU90T81: LVCMOS Data Input /rising edge/200mV swing output/normal output mapping Figure-11 Application Circuit (18bit mode) ●Status of this document The Japanese version of this document is formal specification. A customer may use this translation version only for a reference to help reading the formal version. If there are any differences in translation version of this document formal version takes priority www.rohm.com © 2012 ROHM Co., Ltd. All rights reserved. TSZ22111・15・001 10/11 TSZ02201-0L2L0V100010-1-2 23.JAN.2012 Rev.001 Datasheet Notice Precaution on using ROHM Products 1. Our Products are designed and manufactured for application in ordinary electronic equipments (such as AV equipment, OA equipment, telecommunication equipment, home electronic appliances, amusement equipment, etc.). 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