m66291 Renesas Electronics Corporation., m66291 Datasheet - Page 14

• Manufacturer Part Number: m66291
• Description: Assp Usb2.0 Device Controller
• Manufacturer: Renesas Electronics Corporation.

M 6 6 2 9 1 G P / H P
2.2 Remote Wakeup Register
R e v 1 . 0 1
(1) WKUP (Remote Wakeup) Bit (b0)
b15
15~1
Remote Wakeup Register (REMOTE_WAKEUP)
0
0
-
b
0
This bit controls the output of the remote wakeup signal (K state output).
This bit is valid only when the device state is “suspend” (DVSQ bits = “1xx”). The writing of “1” to this bit is
ignored when the device state is not suspend.
When “1” is written to this bit, the K state is output for 10 ms. The bit is automatically cleared to “0” after K
state output.
The bus idle state continues (this WKUP bit = “1”) for 2 ms after the Suspend state is detected when “1” is
written to this bit before outputting the K state for 10 ms.
The 2 ms and 10 ms time intervals are counted using a clock. Make sure that the counting stops if the clock is
not supplied (Note).
2 0 0 4 . 1 1 . 0 1
Note :
Reserved. Set it to “0”.
WKUP
Remote Wakeup
14
0
0
-
SCKE bit = “0” when XCKE bit = “1 ”, or XCKE bit = “0”.
13
0
0
-
p a g e 1 4 o f 1 2 2
12
0
0
-
Bit name
11
0
0
-
10
0
0
-
9
0
0
-
0 :
1 :
0 :
1 :
Read
Write
8
0
0
-
Do not output the remote wakeup signal
Output the remote wakeup signal
Invalid (Ignored when written)
Output the remote wakeup signal
7
0
0
-
6
0
0
-
Function
5
0
0
-
4
0
0
-
3
0
0
-
2
0
0
-
<H/W reset : H'0000>
<S/W reset : H'0000>
<Address : H’02>
<USB bus reset : ->
1
0
0
-
R
0
WKUP
b0
0
0
-
W
0