Peripheral Control Module

11.8.13.6Reset Interrupt Request (RSTIR)

The reset interrupt request register will be set if the REM bit in the UDC control register is cleared and the host issues a reset. When the host issues a reset, the entire UDC is reset. The RSTIR bit retains its state so software can determine that the design was reset.

 

Address: 0h 8000 0030

UDCSR

Read/Write (Clear)

Bit

7

6

5

4

3

2

1

0

 

 

 

 

 

 

 

 

 

 

 

 

 

Res.

RSTIR

RESIR

SUSIR

TIR

RIR

EIR

 

 

 

 

 

 

 

 

 

 

Reset

0

0

0

0

0

0

0

0

Bit

Name

 

Description

 

 

 

0

EIR

Endpoint 0 interrupt request (read/write clear).

 

 

1

– Endpoint 0 needs service.

 

 

 

1

RIR

Receive interrupt request (read/write clear).

 

 

1

– Receive endpoint (1) needs service.

 

 

 

2

TIR

Transmit interrupt request (read/write clear).

 

 

1

– Transmit endpoint (2) needs service.

 

 

 

3

SUSIR

Suspend interrupt request (read/write clear).

 

 

1

– UDC received suspend signalling from the host.

 

 

 

4

RESIR

Resume interrupt request (read/write clear).

 

 

1

– UDC received resume signalling from the host.

 

 

 

5

RSTIR

Reset interrupt request (read/write clear).

 

 

1

– UDC was reset by the host.

 

 

 

7..6

Reserved.

 

 

Always reads zero.

 

 

 

 

SA-1100 Developer’s Manual

11-77

Page 227
Image 227
Intel SA-1100 manual Reset Interrupt Request Rstir, Udcsr, Rstir Resir Susir TIR RIR EIR