Nissan B8260-7991L In-Dash Navigation Unit Teardown

Overview / Main Features

The Nissan HC510D-A (model B8260-7991L) under analysis here is a Japanese domestic market 2-din in-dash navigation unit featuring 7-inch touchscreen, DVD player, built-in 12Seg tuner, 40GB 2.5-in ATA hard disk drive and Bluetooth connectivity (for mobile phone connectivity to Nissan's CarWings telematics service). The Nissan HC510D-A also features a collision-avoidance electronics based on the DSSS standard (Driving Safety Support System) which relies on optional safety beacon kit.

The Nissan HC510D-A is sold with a range of accessories and options which leverages the onboard graphics processing capabilities of the in dash unit to perform functions such as parking assist and lane departure warning via external vehicle camera feeds.

Nissan B8260-7991L In-Dash Navigation Unit Main Image

Automobile OEM

Released

2010 Model Year

Pricing and Availability

Pricing - The Nissan HC510D-A (model B8260-7991L) is listed on Nissan (Japanese) website for 279,900 Yen or approximately $3300 USD.

Availability - Japanese Domestic Automobile Market

Volume Estimations

For the purposes of this teardown analysis, we have applied a lifetime production volume of approximately 144,000 units.

As a reminder, teardown volume production assumptions are primarily used for our cost analysis in terms of amortized NRE and tooling costs, especially for custom components specific to the model being analyzed (mechanical components especially). Unless assumed volumes are different by an order of magnitude, minor changes in volume (say 1 million vs. 2) rarely have a large net effect on our final analysis because of this.

Nissan B8260-7991L In-Dash Navigation Unit - Main PCB Top and Bottom

Market sector / performance

According to IHS iSuppli Automotive OEM profile, "For 2011 models, Nissan offers factory installed Carwings in-vehicle navigation system on 16 of the 26 models. Further, ""Like its counterpart in North America, Nissan used navigation systems supplied by Xanavi, a joint venture of Nissan and Hitachi until the company merged with Clarion in 2008."

Nissan B8260-7991L In-Dash Navigation Unit Cost Analysis

Main Cost Drivers ~85% of Total Materials Cost

Toshiba Mobile Display - LT070AB2LA00 - Display Module Value Line Item - 7.0' Diagonal, 262k Color TFT LCD, Active Matrix Transmissive, 800 x 480 Pixels, LED Backlight

CD/DVD RW Drive - Slim Internal Type, Slot Load

Manufacturing Cost

Hitachi Global Storage - HEJ425040F9AT00 - Hard Drive - 40GB, 2.5', ATA-6, 4260RPM, 8MB Buffer

Digital TV Tuner Module

Renesas - R8A77700BDA01BGV - MPU - SoC, 32-Bit Renesas SH-4A RISC Core, 2D/3D Graphics Engine, GPS Baseband Processing, USB OTG, CAN Interface, 400MHz

Touchscreen Assembly - 7' Diagonal, 4-Wire Resistive, Glass, w/ Flex Kapton PCB

AM / FM Radio Tuner Module - FM 64 MHz to 108 MHz & US Weather Band & AM 31m, 41m and 49m Bands

8-Layer - FR4 / RCF HDI, 2+4+2

8-Layer - FR4 / RCF HDI, 2+4+2, Lead Free

Direct Materials + Manufacturing $620.09

What Is Not Included in our Cost Analysis

The total materials and manufacturing costs reported in this analysis reflect ONLY the direct materials cost (from component vendors and assorted EMS providers), AND manufacturing with basic test. Not included in this analysis are costs above and beyond the material manufacture of the core device itself - cost of intellectual property, royalties and licensing fees (those not already included into the per component price), software, software loading and test, shipping, logistics marketing and other channel costs including not only EMS provider and the OEM's margin, but that of other resellers. Our cost analysis is meant to focus on those costs incurred in the manufacture of the core device and exceptionally in some circumstances the packaging and literature as well.

Manufacturing Notes

Country of Origin / Volume Assumptions

Based on device markings, we've based our analysis with the final assembly in Japan. Furthermore, we have assumed that custom mechanicals (plastics, metals, etc.) were also sourced in Japan.

Country of origin assumptions relate directly to the associated cost of manufacturing, where calculated by iSuppli. In the cases of 'finished' sub-assemblies (such as display module), we do not calculate internal manufacturing costs, but rather assess the market price of the finished product in which case country of origin assumptions may or may not have a direct effect on pricing.

Remember also that labor rates are applied directly only to hand inserted components and systems in our bill of materials, and although regional assumptions do, these new rates do not have a direct effect on our modeled calculations of placement costs for automated SMD assembly lines. "Auto" inserted components (such as SMT components) placement costs are calculated by an iSuppli algorithm which allocates a cost per component based on the size and pincount of the device. This calculation is affected by country or region of origin as well.

Design for Manufacturing / Device Complexity

The Nissan HC510D-A in-dash unit has an overall component count of 5608 (excluding box contents), of which 1677 components reside on the Main PCB, 1321 on the DTV PCB and 945 on the Video Processing PCB. In comparison, Toyota NHDT-W60G in-dash navigation unit has a lower overall component count of 4329.

Component counts have a direct bearing on the overall manufacturing cycle times and costs, and also can increase or decrease overall yields and re-work. Our calculations of manufacturing costs factor counts and more qualitative complexities in the design. The cost of manufacturing is also, to some extent, decreased in this case because of assumed labor rate applied for Japan.

Note that manual labor has a much smaller effect on auto-insertion assembly lines (for the Main PCB, for example), where manufacturing costs are much more capital equipment intensive and driven by these investment costs.

Design Notes

The double-din Nissan HC510D-A in-dash navigation head-end unit features a 7 inch diagonal format color display with LED backlighting. Touch overlay on the unit is a 4-wire resistive touchscreen. Toshiba Mobile Display is the component supplier for the 800 x 480 pixel 7-inch automotive TFT.

On the Main PCB, the Nissan head-end unit features a 32-bit Renesas MPU and a Xanavi telematics chip (likely supporting the Nissan CarWings & Navigation service platform). Other significant components include a DSP from Texas Instruments.

The next major assembly is the DTV PCB which includes a significant A/V Processing chip from Sanyo and another MPU from Renesas that runs the 12Seg DTV. The DTV demodulator and tuners solutions are provided by Toshiba and MaxLinear.

The other major component of note is the Toshiba video processor on the Video Processor PCB which handles some of the more sophisticated vision protocols like parking assistance and lane departure detection.

Here is a summary of the major components used in the Nissan HC510D-A design:

Display / Touchscreen

• Display Module - Toshiba Mobile Display - LT070AB2LA00, 7.0' Diagonal, 262K Color TFT LCD, 800 x 480 pixels, 197um x 172um Pixel Size, 157.2mm x 82.3mm Viewable Area, 10 LEDs Backlight
• Touchscreen Assembly - 7' Diagonal, 4-Wire Resistive, Glass, w/ Flex Kapton PCB

Storage

• Hard Drive - Hitachi Global Storage - HEJ425040F9AT00, 40GB, 2.5', ATA-6, 4260RPM, 8MB Buffer

Main PCB

MCU

• MPU - Renesas - R8A77700BDA01BGV, SoC, 32-Bit Renesas SH-4A RISC Core, 2D/3D Graphics Engine, GPS Baseband Processing, USB OTG, CAN Interface, 400MHz

I/O & Interface

• ASIC - Xanavi Informatics Corporation - XI019B, Telematics
• USB Controller - Seiko Epson Corporation - S2R72C05F15E2, USB2.0, Up to 480Mbps, Host/Slave, 2-Channel DMA

A/V Processing

• DSP (Audio Decoder / Post Processor) - Texas Instruments - TMS320D610A003PYP, 32/64-Bit, Floating-Point, 1800MIPS @ 225MHz, 50 GPIO Pins, 16-Bit Host Port Interface, Dolby / Fraunhoffer / DTS Compatible
• ATRAC Encryption/Decryption IC - Sony - CXD5070-101GG, 16-Bit Host Interface, Supports ATRAC Audio Device and ATRAC CD

GPS

• GPS - JRC - DLTS0031

DTV PCB

A/V & Processing

• A/V Processing IC - Sanyo Semiconductor - LC74156PNB, Terrestrial DTV Receiver, MPEG-2/H.264 Video Decoder, AAC / BC Audio Decoder, TS Decoder, NTSC Encoder, ISDB Support OSD, Video Scaler, NTSC Encoder

MCU

• MPU - Renesas - HD6417750RBG200, 32-Bit RISC, SH-4 Core, 16KB Instruction Cache, 32KB RAM, 200 MHz, w/ PLL

I/O & Interface

• Demodulator - Toshiba Semiconductor - TC90504IXBG, OFDM, ISDB-T, Four-Branch Diversity Reception, IF Signal Input in the Range of 4 MHz to 57MHz, MPEG-2 TS Output, w/ Error Correction
• Digital TV Tuner Module - Panasonic
• Tuner - Maxlinear - MxL131RF, 44MHz to 885MHz, Supports 13-Segment ISDB-T, Programmable IF Output / Spectrum Inversion, I2C Compatible Interface
• Tuner - Maxlinear - MxL131RF, 44MHz to 885MHz, Supports 13-Segment ISDB-T, Programmable IF Output / Spectrum Inversion, I2C Compatible Interface

Memory

• SDRAM - Micron - MT46V16M16P-6T IT:K, DDR333, 256Mb (4M x 16 x 4banks), 6ns @ CL=2.5
• SDRAM - Micron - MT48LC16M16A2P-75 IT:D, 256Mb (4M x 16 x 4banks), PC133, 7.5ns @ CL=3
• Flash - Toshiba Semiconductor - TC58FVM6B5BTG65, NOR, 64Mb, 65ns, 0.13um Process

Video Processing PCB

A/V Processing

• Video Processor - Toshiba Semiconductor - TC90196BFG, Dual-Picture, 2-Channel Color Decoder (PAL & NTSC), w/ 16Mbit DRAM, Support for WVGA & WQVGA Panels

MCU

• MCU - Renesas - M30281FATHP#U3,16-bit M16C/60 Core, 96KB + 4KB Flash ROM + 8KB RAM, 10-bit x 16-Ch ADC, 2-Channel DMA, 20MHz, w/ PLL