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(9) Remote wake-up control register (REMWUP)
This register transmits the Resume signal to perform remote wakeup.
Remote wakeup must be performed after confirming that bus idle has continued longer than 5 ms.
REMWUP is set with a 1-bit or 8-bit memory manipulation instruction.
RESET input sets REMWUP to 08H.
Symbol
7
6
REMWUP
0
0
PULLDM
0
D- (TXDM) is fixed to low output.
1
D- (TXDM) is fixed to high output.
PULLDP
0
D+ (TXDP) is fixed to low output.
1
D+ (TXDP) is fixed to high output.
PULLEN
0
Output from transmit buffer is input to USB driver.
1
Level set to PULLDP or PULLDM is input to USB driver.
WAKEUP
0
No data is sent.
1
Pin status set to PULLDP or PULLDM is output.
CHAPTER 8
Figure 8-19. Format of Remote Wakeup Control Register
5
4
<3>
0
0
PULLDM PULLDP PULLEN WAKEUP
D- lead low/high fixed output setting
D+ lead low/high fixed output setting
D+/D- lead fixed output enable
User's Manual U12978EJ3V0UD
USB FUNCTION
<2>
<1>
<0>
Wakeup signal output
Address
After reset
R/W
FF6AH
08H
R/W
121
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