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ROHM BU7964GUW Data Manual

Summary

This high-performance Mobile Shrink Data Link (MSDL) transceiver offers a specialized differential serial interface connecting LCD display modules directly to the phone's host CPU. Achieving data rates up to 1350 Mbps, it minimizes wire count while maintaining low power consumption and EMI performance—ideal for complex mobile designs like hinge phones. This documentation provides detailed technical specifications, operational parameters, pin layouts, and electrical ratings required for engineers designing compact, reliable LCD display interfaces tailored specifically for the mobile device industry.

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MSDL (Mobile Shrink Data Link) Transceivers for Mobile Phones

Data rate 1350Mbps RGB Interface

No.10058EAT04

BU7964GUW

●Description BU7964GUW is a differential serial interface connecting mobile phone LCD modules to the host CPU. Unique technology is utilized for lower power consumption and EMI. MSDL minimizes the number of wires required - an important consideration in hinge phones - resulting in greater reliability and design flexibility.

●Features 1) MSDL3 high-speed differential interface with a maximum transfer rate of 1350 Mbps. 2) Compatible with24-bit RGB video mode for LCD controller-to-LCD interface. 3) Pixel clock frequency range from 4 to 45MHz. 4) Depending on the data transfer rate, either, two or three differential data channels can be selected.

●Applications Serial Interface for LCD Display Interface of Mobile Devices Application.

●Absolute Maximum Ratings

Parameter Symbol Ratings Unit Remarks

DVDD -0.3 ~ +2.5 V -

Power Supply Voltage

MSVDD -0.3 ~ +2.5 V -

-0.3 ~ MSVDD+0.3 V I/O terminals of MSVDD line

Input Voltage VIN

-0.3 ~ DVDD+0.3 V I/O terminals of DVDD line -0.3 ~ MSVDD+0.3 V I/O terminals of MSVDD line

Output Voltage VOUT

-0.3 ~ DVDD+0.3 V I/O terminals of DVDD line

Input Current IIN -10 ~ +10 m A - Output Current IOUT -70 ~ +70 m A - Preservation Temperature Tstg -55 ~ +125 ℃ -

●Operating Conditions

Ratings

Parameter Symbol Unit Conditions

Min Typ Max

Supply Voltage for DVDD VDVDD 1.65 1.80 1.95 V

VDVDD = VMSVDD

Supply Voltage for MSVDD VMSVDD 1.65 1.80 1.95 V Data Transmission Rate DR 120 - 450 Mbps/ch Operating Temperature Range Topr -30 25 85 ℃ -

www.rohm.com 2010.04 - Rev.A

© 2010 ROHM Co., Ltd. All rights reserved.

Page Summary Contents For ROHM BU7964GUW Data Manual

Page 1 MSDL (Mobile Shrink Data Link) Transceivers for Mobile Phones Data rate 1350Mbps RGB Interface No.10058EAT04 BU7964GUW ●Description BU7964GUW is a differential serial interface connecting mobile phone...
Page 2 BU7964GUW Technical Note ●Package View 1PIN MARK BU7964 LOT NO. 63-φ0.295±0.05 0.05 SABM (UNIT:mm) Fig.1. Package View (VBGA063W50) www.rohm.com 2010.04 - Rev.A © 2010 ROHM Co., Ltd. All rights reserv...
Page 3 BU7964GUW Technical Note ●Block Diagram MSVDD DVDD High Speed I/F Serial Error Detection Parallel Logic CLK - Timing PCLK PLL PCLK CLK + Generator Control Reset Monitor Generator Control DRVR F_XS Log...
Page 4 BU7964GUW Technical Note ●Pin Layout A TEST0 PD19 PD17 PD16 PD14 PD13 PD10 CPO B PCLK PD18 PD15 PD12 PD11 PD9 PD8 C PD22 PD20 PLL_BW0 DVDD N.C. F_XS PD7 PD6 D PD23 PD21 N.C. DGND DGND DVDD PD4 PD5 E P...
Page 5 BU7964GUW Technical Note ●Pin Functions Table 1. Power Supply and Ground Power Supply / Ground: 10-pin Name Width Functions DVDD 3 Logic core, CMOS I/O power supply. MSVDD 2 Analog core power supply. ...
Page 6 BU7964GUW Technical Note Table 5. Control Control: 8-pin Name Width Level I/O Functions Shutdown Equivalent Schematic Shutdown pin. XSD 1 CMOS I ‘L’: shutdown. Input A ‘H’: normal operation. LS0 1 Sel...
Page 7 BU7964GUW Technical Note ●Operation Control MSDL3 Channel Count Selection Pins LS0 and LS1 are used to control the high-speed data channel count and data format. High-speed data channel count, data fo...
Page 8 BU7964GUW Technical Note ●Power Modes BU7964UW has three power modes. 1) Shutdown Mode BU7964GUW goes to Shutdown Mode when XSD = ‘L.’ AII logic circuits are initialized in the Shutdown Mode. All high...
Page 9 BU7964GUW Technical Note ●Link Error Detection Detection of Parity Error BU7964GUW counts the number of ‘H’ bits in PD[26:0] and CP in every pixel information received and detects parity error as foll...
Page 10 BU7964GUW Technical Note ●Electrical Characteristics 1) DC Characteristics Table 10. Digital Input / Output DC Characteristics Ta=25°C, DVDD=MSVDD=1.80V and DGND=MSGND=0.00V, unless otherwise noted. L...
Page 11 BU7964GUW Technical Note 2) AC Characteristics Parallel Data Output Timing 0.7×DVDD P [2 : 0] 0.5×DVDD 0.3×DVDD PCL 0.5×DVDD t R _DUTY _PCLK Fig.9. Parallel Data Output Timing Table 12. Parallel Data ...
Page 12 BU7964GUW Technical Note 3) Power-On / Off Sequence Power-On Sequence Fig.10 shows power-on sequence of BU7964GUW. DVDD , MSVDD of Tx t TX_VDD_XSD XSD of Tx t TX_IN_VAL PCLK of Tx Provided Stopped t T...
Page 13 BU7964GUW Technical Note Power-Off Sequence Fig.11 shows the power-off sequence of BU7964GUW. PCLK of Tx Stopped Provided t TX_OUT_INV Valid Tx MSDL 3 Output t RX_OUT_INV Initial Value Valid Outputs R...
Page 14 BU7964GUW Technical Note ●Frequency Change Sequence Fig.12 shows the frequency change sequence of BU7964GUW. DVDD , MSVDD of Tx and Rx t TX_XSD_OUT t TX_IN_XSD XSD of Tx PCLK of Tx Frequency Frequency...
Page 15 BU7964GUW Technical Note ●High-Speed Channel Characteristic Table 16. High-speed channel characteristic Ta=25°C, DVDD=MSVDD=1.80V and DGND=MSGND=0.00V, unless otherwise noted. Limits Parameter Symbol ...
Page 16 BU7964GUW Technical Note MSDL 3 TX MSDL 3 RX MSVDD Transmission I LEA ILEA MSVDD RT RR VI+ Logical output from VI- MSDL 3 RX RT RR Logical input MSGND VO - MSVDD MSDL 3 TX I LEA _T ILEA _R IPUL V C Li...
Page 17 BU7964GUW Technical Note ●Application Circuit Example 100p×3 100p×2 100p×2 100p×3 se MPU Video Mode GND GND LCD Controller CLK+ CLK+ CLK- CLK- Pixel clock PCLK PCLK Pixel clock HS,VS,DE D1+ D1+ PD[26:...
Page 18 BU7964GUW Technical Note ●Ordering Part Number Part No. Part No. Package Packaging and forming specification GUW: VBGA063W050 E2: Embossed tape and reel VBGA063W050 <Tape and Reel information> 1...
Page 19 Notice No copying or reproduction of this document, in part or in whole, is permitted without the consent of ROHM Co.,Ltd. The content specified herein is subject to change for improvement without not...

Manual Details

Brand ROHM
Pages 19
File Size 407.13 KB
Published June 16, 2026
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Frequently Asked Questions

What is the maximum data transfer rate?

1350 Mbps.

Is it compatible with RGB displays?

Yes, supports 24-bit RGB video mode.

What is the operating temperature range?

-30°C to 85°C.

How many differential data channels are used?

Two or three channels, depending on data transfer rate.