7643 datasheet(65/424 Pages) RENESAS

65 / 424 page

Rev.2.00

Aug 28, 2006

page 48 of 103

REJ09B0133-0200

OVERVIEW

FUNCTIONAL DESCRIPTION

7643 Group

[USB Interrupt Status Registers 1 and 2] USBIS1, USBIS2

The USB interrupt status registers are used to indicate the condi-

tion that caused a USB function interrupt to be generated. Each

status flag and bit can be cleared to “0” by writing “1” to the corre-

sponding bit. Make sure to write to/read from the USB interrupt

status register 1 first and then USB interrupt status register 2.

USB interrupt status register 1 (address 005216)

USBIS1

USB endpoint 0 interrupt status flag (INTST0)

0: Except the following conditions

1: Set at any one of the following conditions:

• A packet data of endpoint 0 is successfully received

• A packet data of endpoint 0 is successfully sent

• DATA_END bit of endpoint 0 is cleared to “0”

• FORCE_STALL bit of endpoint 0 is set to “1”

• SETUP_END bit of endpoint 0 is set to “1”.

Reserved bit (“0” at read/write)

USB endpoint 1 IN interrupt status flag (INTST2)

0: Except the following condition

1: Set at which of the following condition:

• A packet data of endpoint 1 is successfully sent

USB endpoint 1 OUT interrupt status flag (INTST3)

0: Except the following conditions

1: Set at any one of the following conditions:

• A packet data of endpoint 1 is successfully received

• FORCE_STALL bit of endpoint 1 is set to “1”.

USB endpoint 2 IN interrupt status flag (INTST4)

0: Except the following condition

1: Set at which of the following condition:

• A packet data of endpoint 2 is successfully sent

USB endpoint 2 OUT interrupt status flag (INTST5)

0: Except the following conditions

1: Set at any one of the following conditions:

• A packet data of endpoint 2 is successfully received

• FORCE_STALL bit of endpoint 2 is set to “1”.

Reserved bit (“0” at read/write)

Fig. 38 Structure of USB interrupt status register 1

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