R-Car/Boards/SILK:Hardware

This page contains information on R-Car/Boards/SILK hardware.

Power Plug
R-Car SILK board uses a 5.5 x 2.1mm barrel 5V power plug. It is a Center Positive power supply, indicating that the center (tip) of the output plug is positive (+), the outer barrel is negative (-).
 * North American Power Supply from Digikey - 5V@2.5A -CUI EPSA050250U-P5P-EJ
 * European Power Supply from Digikey - 5V@2.5A - CUI EPSA050250UE-P5P-EJ
 * Powe Supply from Sparkfun - 5V@2A - TOL-12889
 * Power Supply from Adafruit - 5V@2A - PRODUCT-ID:276
 * Power Supply from SeeedStudio - 5V@2A SKU: POW06182B

SW1 (SSI_DATA1 Routing)
SW1 selects the device to be connected to the SSI_DATA1/ETH_RXD0_B (GP-5-13) pin of the R-Car E2. The pin is normally set to receive mode.

SW2 (TRST# Pull-up)
SW2 selects whether to pull up or down the TRST# pin of the R-Car E2 JTAG interface.

SW3, SW4, SW6 (Push Buttons)
Active signal (low or high) for SW3-SW5 is selected by the corresponding bit of POSNEG register. Refer to to the section GPIO in the R-Car E2 Hardware Manual for details.

SW7 (Mode Setting A)
MD21 determines the mode of JTAG. Select OFF position to use JTAG debugger. MD19 determines SDRAM clock speed. It must remain in OFF position to select DDR3-1333.

SW9 (SPI Flash Memory Selection)
The R-Car  E2  Application  Development  board  is  equipped  with  the  SPI  flash  memory  of  512  Mbits  (U6: S25FL512SAGMFIG11) and the SPI flash memory of 32 Mbits (U7: S25FL032P0XMFI011). When SW9 is set to the pin 1 side, the SSL pin of the R-Car E2 is connected to the flash memory of 512 Mbits. When SW9 is set to the pin 3 side, the SSL pin of the R-Car E2 is connected to the flash memory of 32 Mbits.

SW10 (USB2.0 Channel 0 Host or Function Selection)
SW10 selects the mode of USB port 0 located on top of the USB connector.

SW12 (User-Defined Software Switch)
Before using SW12 as a general-purpose input switch, set up the GPSR3 register of the R-Car E2 to select the GPIO function and set the PUPR3 register to enable pulling up. For details, refer to the section on the Pin Function Controller (PFC) in the R-Car E2 Hardware Manual.

LEDs
LD1 (blue): indicates that 5V power has been applied to the board.

LD2 (red): indicates that the board is turned on and has 3.3V power.

Turning On and Off
Special sequence is required for turning on and off the power supply to the R-Car E2 SILK board:
 * To turn ON: Press SW11 once
 * To turn OFF: Long press SW11

HDMI (CN6)
Digital RGB888 signal from E-Car E2 DU0 is connected to Analog Devices ADV7511 HDMI transmitter. Internal registers of ADV7511 are accessible via I2C interface (slave addresses: 0x72 for writring, 0x73 for reading).

The following displays have been tested with SILK board:
 * Gechic On-Lap1502I Touch Monitor (Don't forget to set CONFIG_HID_MULTITOUCH and connect USB touchscreen)
 * Lilliput 10' with capacitive touch screen (NOTE: picture quality is not good due to limited native resolution]
 * Xenarc 7' capacitive touch

VGA (CN9)
Digital RGB666 signal from E-Car E2 DU1 is connected to Analog Devices ADV7123 video D/A converter. This signal is then feed to the CN9 VGA connector.

The following displays have been tested with SILK board:
 * Gechic On-Lap1502I Touch Monitor (Don't forget to set CONFIG_HID_MULTITOUCH and connect USB touchscreen)

External LCD display (CN8)
Renesas R-Car E2 SILK board has a dedicated connector for LCD-KIT-B01 touchscreen panel.

Datasheet is available in Japanese.

I2C interface is available for getting touchscreen data.

Analog In/Out
AKM AK4643 audio codec is integrated on Renesas R-Car E2 SILK board.

AK4643 is in slave mode after reset and can be switched to master by writing to a special resiter via I2C interface. It is assumed that SSI_DATA0 is set to transmit mode and SSI_SDATA1 is set to receive mode.

HDMI (CN6)
TBD Describe Audio Out through HDMI connector

Debug Interface (CN1)
Renesas R-Car E2 SILK board includes 20-pin header for attaching ARM JTAG debugger. TCK, TDI and TMS have internal 1.8V pull-up resistors. An additional resistor can be soldered to the board to add 1.8V pull-up to ASEBRK pin. Refer to Board manual for more information.

MicroSD card slot
MicroSD card slot (CN4) is connected to SD card host interface SDHI1 of R-Car E2. When GP4_26 is set to 1, power is supplied. When GP4_26 is set to 0, power is shut off.

eMMC
8GB eMMC MTFC8GLWDQ-3M AIT Z (U5) is installed on Renesas R-Car E2 SILK board. It is connected to the SoC via 8-bit MMC interface.

eMMC is gouverned by JESD84-B50 standard.

Ethernet
R-Car E2 SILK board has one 10/100 Ethernet port compliant with IEEE 802.3u. Micrel KSZ8041 (U13) PHY is used, in RMII mode. The port is Auto MDI/MDI-X Since Ethernet AVB and EthetMAC use same pins of E2, they cannot be used simultaneously. EtherMAC_B can be used with Ethernet AVB.

R-Car_E2:Ethernet performance

Video In
Video Input interface on SILK board could be used for misc. sources of standard analog baseband television signals compatible with NTSC, PAL. (For example: traditional analog CCTV or car front/rear cameras, media players)

Video signal from Video In connector is converted with the help of Analog Devices ADV7180 into 4:2:2 component 8-bit ITU-R BT.656 video data and passed to R-Car E2 VIN0 interface

R-Car_E2_SILK_Board:Testing Video In/VIN0

USB
CN2 USB type A connector has two ports. Upper port is Ch 0, Lower port is Ch 1. USB 2.0 mode is supported to the corresponding USBx_OVC pin.

In host mode, each port is current-limited at 2.4 A by ROHM BD82065FVJ. Overcurrent is reported to Renesas R-Car E2.

USB Host
USB host mode is possible for both Ch 0 and Ch 1. For Ch0, SW10 should be switched to pin 1 side.

USB Function
USB function mode is possible for Ch0 when SW10 is set to pin 3 side. VBUS from CN2/lower is routed to USB0_OVC/VBUS pin of Renesas R-Car E2.

Refer to R-Car E2 hardware manual for more information.

Debug Serial (CN13)
Renesas R-Car E2 debug interface SCIF2 is exposed to microUSB connector (CN13) via Silicon Labs CP2102. Refer to R-Car_E2_SILK_Board for configuring and using the interface.

CP2102 is self powered and requires no power over USB. Keep in mind, that CP2102 will not be detected b the host PC until Renesas R-Car E2 SILK board is connected to 5 V power source.

EXIO (JP1, JP2)
Renesas R-Car E2 board includes two EXIO connectors. Both are "Box Wafer, 2.0-mm pitch".

JP1 has I2C interface, connected to SDA3/SCL3 of Renesas R-Car E2.

U17 - Placeholder
U17 can be used to connect Apple Authentication IC (I2C4 on SILK)

Integrated WiFi/Bluetooth Module
Information regarding on-board WiFi/BT module will be made available later (January 2015)

USB Bluetooth
TBD

USB 3G Modem
TBD

USB Video Camera
TBD

USB HID
TBD

USB Ethernet
TBD

USB GPS
TBD

USB CAN
TBD

USB Radio
TBD