38K2 datasheet(86/358 Pages) RENESAS

86 / 358 page

FUNCTIONAL DESCRIPTION

Rev.2.00

Oct 15, 2006

page 67 of 130

38K2 Group

REJ09B0338-0200

HARDWARE

Fig. 99 Structure of DP2 interrupt source register

(2) Downstream port 2

PTDIS2

PTCON2

PTERR2

PTRSM2

PTCHG2

b7:b5

–

DP2 interrupt source register (DP2REQ) [address 002B16]

Bit name

Bit symbol

At reset

Function

H/W

S/W

Downstream port 2 disconnect

detection interrupt bit

Downstream port 2 connect

detection interrupt bit

Downstream port 2 port error

interrupt bit

Downstream port 2 resume

interrupt bit

Downstream port 2 bus-change

detection interrupt bit

Not used

0: No interrupt request issued

1: Interrupt request issued

This bit is set to “1” when detecting a bus-disconnect

state (2.5

µs or more of SE0) on a downstream port 2 in

DSCONN2 = “1”.

“0” can be set by software, but “1” cannot be set.

0: No interrupt request issued

1: Interrupt request issued

This bit is set to “1” when detecting a bus-connect

state (2.5

µs or more of J- or K- state) on a downstream

port 2 in DSCONN2 = “0”.

“0” can be set by software, but “1” cannot be set.

0: No interrupt request issued

1: Interrupt request issued

This bit is set to “1” when an error occurs on a

downstream port 2.

“0” can be set by software, but “1” cannot be set.

0: No interrupt request issued

1: Interrupt request issued

This bit is set to “1” when detecting a resume signal

on a downstream port 2 in the condition of HUB

suspended or port suspended state.

“0” can be set by software, but “1” cannot be set.

0: No interrupt request issued

1: Interrupt request issued

This bit is set to “1” when detecting a bus-change of a

downstream port 2 in the condition of HUB suspended

state. It is also “1” in the internal clock halted.

“0” can be set by software, but “1” cannot be set.

Write “0” when writing.

“0” is read when reading.

–: State remaining

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