38K2 datasheet(82/358 Pages) RENESAS

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FUNCTIONAL DESCRIPTION

Rev.2.00

Oct 15, 2006

page 63 of 130

38K2 Group

REJ09B0338-0200

HARDWARE

HUB Related Registers

The HUB related registers are shown below.

Fig. 93 Structure of HUB interrupt source enable register

Fig. 94 Structure of HUB interrupt source register

DP1E

DP2E

b6:b2

HRWUE

–

HUB interrupt source enable register (HUBICON) [address 002816]

Bit name

Bit symbol

At reset

Function

H/W

S/W

HUB downstream port 1 interrupt

enable bit

HUB downstream port 2 interrupt

enable bit

Not used

HUB upstream port remote-

wakeup output enable bit

0 : Interrupt disabled

1 : Interrupt enabled

0 : Interrupt disabled

1 : Interrupt enabled

Write “0” when writing.

“0” is read when reading.

0 : Disabled

1 : Enabled

–: State remaining

DP1

DP2

b6:b2

HRWU

–

HUB interrupt source register (HUBIREQ) [address 002916]

Bit name

Bit symbol

At reset

Function

H/W

S/W

HUB downstream port 1

interrupt bit

HUB downstream port 1

interrupt bit

Not used

HUB upstream port remote

-wakeup output enable bit

This bit is set to “1” when any one of DP1 interrupt

source register’s bits at least is set to “1”.

This bit is cleared to “0” by clearing DP1 interrupt

source register to “0016”.

Writing to this bit causes no state change.

This bit is set to “1” when any one of DP2 interrupt

source register’s bits at least is set to “1”.

This bit is cleared to “0” by clearing DP2 interrupt

source register to “0016”.

Writing to this bit causes no state change.

Write “0” when writing.

“0” is read when reading.

0 : Remote-wakeup being not output

1 : Remote-wakeup being output

This bit change is not for a interrupt source.

When detecting 2.5

µs or more of K-signal on a

downstream port in Hub-suspended state, K-signal is

output on from a upstream port and this bit is

simultaneously set to “1”.

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

–: State remaining

000

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