Toshiba TLCS-900/H1 Series Manual page 378

Original cmos 32-bit microcontroller

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Table of Contents

1000: FIFO_ENABLE

1001: INIT_DESCRIPTOR

1010: FIFO_CLEAR

1011: STAL_CLEAR

This COMMAND sets FIFO of corresponding endpoint to enable (EP1 to EP3).

If FIFO is set to disable by FIFO_DISABLE COMMAND, this command is used for

release of disable condition. If set while receiving packet, this becomes valid from next

token. If USB_RESET is detected from host and RESET COMMAND execute and

transfer mode is set by using SET_CONFIG and SET_INTERFACE request, the

corresponding endpoint enters FIFO_ENABLE condition.

This COMMAND is used if descriptor RAM is rewritten during system operation (EP0).

If UDC detects USB_RESET from host controller, it reads content of descriptor RAM

automatically, and it performs relevant settings.

If descriptor RAM is changed during system operation, it must read setting again.

Therefore, execute this command. When connected to USB host, this function starts

reading automatically. Therefore, in this case, it is not necessary to execute this

This COMMAND initializes FIFO of corresponding endpoint (EP1 to EP3).

However, EPx_STATUS<TOGGLE> is not initialized.

If resetting by software, execute this COMMAND.

This command Initializes the following item.

・Clear STALL of relevant endpoint.

・Set to FIFO_ENABLE condition.

・Clear the data in FIFO

This COMMAND clear STALL of corresponding endpoint (EP1 to EP3).

If clearing only STALL of endpoint, execute this COMMAND.