1. Renesas Electronics America Inc. RX USB Peripheral The Renesas RX USB peripheral a.k.a. USBC_597IP_PP Ver. 1.00

2. 2 Course Introduction Purpose Understand features of the RX USB peripheral “597”. Objectives Learn some fundamental concepts and capabilities of connecting and using this USB peripheral. Content 15 slides 5 questions Learning Time 20 minutes

3. 3 RX USB Peripheral Features The 597 USB peripheral (USBC_597IP_PP) USB2.0 compliant Full-speed Can support two root hubs Includes transceiver with a hardware scheduler  FW need only do basic scheduling HW supports Host, Function, OTG Supports all transfer types Control Bulk Interrupt Isochronous MCU may have multiple USB blocks! The R8A66597 USB external USB controller Two ports, High-Speed

4. 4 Features..

5. 5 Features… HOST controller specialised to easily support subset of USB2.0.  More suited for embedded systems

6. 6 Features… One or more USB ports may have selectable Host/Function/OTG Example Two ports Both are selectable Host/Function/OTG USB RX USB PHY USB Host Device OTG Selectable per channel

7. 7 Pin Mode Host/Function/OTG Example

8. 8 USB Function Connection Example MCU can be bus or self powered D+ pulled high when set to Function (to tell a Host it is connected)

9. 9 USB Host Connection Example When Host, add weak pulldown resistors for D+ and D-

10. 10 USB OTG Connection Example When Function, DPUPE will pull up D+ When Host, DPRPD and DPRD will provide pulldown of D+ and D-

11. 11 The Pipes Pipe 0 is designated for Control transfers Default Control Pipe, 64-byte fixed single buffer. Pipe 1-2: Bulk or Isochronous “Continuous transfers”, programmable buffer size. (Up to 2-kbytes, double buffer can be specified) Pipe 3-5: Bulk “Continuous transfers”, programmable buffer size. (Up to 2-kbytes, double buffer can be specified) Pipe 6-9: Interrupt 64-byte fixed single buffer Host Function Endpoint X RAM of endpoint X Host uses a Function ‘device address’ and EP# associated with certain Pipe to access Function data. To access EPx: Device Address + EP# = Pipe N Pipe N

12. 12 Setting Up a Pipe Select the pipe  PIPESEL register Set pipe’s device address endpoint number with the PIPECFG and PIPEMAXP registers Later, transmit data by writing to the FIFO with pipe selected by “Curpipe” Pipes can be used dynamically; only when data needs to be sent!  Pipes are reused; not “locked” to certain address and endpoint

13. 13 Internal main bus 1 Internal main bus 2 Peripheral bus 3 Multi-layer internal bus Peripheral bus 3 Clocks

14. 14 PCLK ICLK Clocks..

15. 15 Field Firmware Update over USB See also “ Device Firmware Upgrade ” class, in RI tutorial IV; “ USB Classes”. Using USB Boot Mode MCU (RX) has built-in USB command set – User mat (flash memory) programmed by commands from external USB host – The Renesas FDT PC-application. Using proprietary loader Devote a block of user flash for bootloader Host: – New application image retreived from e.g. USB stick – Stick image to contain header showing it is new application Function: – Host to send code sequence and new download image Reflash application blocks, and reboot

16. 16 Course Summary “RX USB Peripheral” The USB Peripheral Features Pin Modes and connections Function Host OTG The Pipes Clocks Update of Application In-field over USB

18. Renesas Electronics America Inc. Thank You