SH7216 Group

USB Function Module: USB Mass Storage Class

REJ06B0897-0100/Rev.1.00

July 2009

Page 3 of 32

2.

Overview

This program performs control transfer, bulk transfer, and processing for Mass Storage Class commands that use the

USB function module (USB).

The features of the USB Function Module contained in the SH7216 are listed below.

• Automatic processing of USB protocol

• Automatic processing of USB standard commands for endpoint 0 (some commands need to be processed through

the firmware)

• Full-speed transfer supported

• Interrupt request: Various interrupt signals needed for USB transmission and reception are generated.

• Clock: External input clock generated by the USB oscillator (48 MHz)

• Low power consumption mode provided.

• Internal USB transceiver

• Endpoint configurations: The configurations are indicated in table 1.

Table 1

Endpoint Configurations

Endpoint Name

Name

Transfer Type

Max. Packet Size

FIFO Buffer Capacity

DMA Transfer

EP0s

Setup

8 bytes

8 bytes

—

EP0i

Control In

16 bytes

16 bytes

—

Endpoint 0

EP0o

Control Out

16 bytes

16 bytes

—

Endpoint 1

EP1

Bulk-in

64 bytes

64

× 2 (128) bytes

Possible

Endpoint 2

EP2

Bulk-out

64 bytes

64

× 2 (128) bytes

Possible

Endpoint 3

EP3

Interrupt In

16 bytes

16 bytes

—

Endpoint 4

EP4

Bulk-in

64 bytes

64

× 2 (128) bytes

Possible

Endpoint 5

EP5

Bulk-out

64 bytes

64

× 2 (128) bytes

Possible

Endpoint 6

EP6

Interrupt In

16 bytes

16 bytes

—

Endpoint 7

EP7

Bulk-in

64 bytes

64 bytes

—

Endpoint 8

EP8

Bulk-out

64 bytes

64 bytes

—

Endpoint 9

EP9

Interrupt In

16 bytes

16 bytes

—

Figure 1 shows an example of a system configuration.

SH7216 CPU board

USB cable

Host PC equipped with USB

Windows® 2000, Windows® XP,

Windows® Vista, Mac OS9

Figure 1 System Configuration Example