mcs7840 MosChip, mcs7840 Datasheet - Page 36

• Manufacturer Part Number: mcs7840
• Description: Usb-2.0 To Four Serial Ports
• Manufacturer: MosChip

Page 36
MCS7840
USB-2.0 to Four Serial Ports
Serial Port (2, 3, & 4) – Device Confi guration Register 2
The Confi guration Registers for these three Serial Ports are all identical.
They are very similar to Serial Port 1, but have a few less confi guration options.
Note: Wake up defi ned above can work only when DCR0[6] = 0 and DCR1[4] = 0.
Reserved
DCR2
Bit[7]
Bit
0
1
2
3
4
5
6
7
Reserved
Reserved
Reserved
EWU_
EWU_
EWU_
EWU_
EWU_
RWU_
Name
Bit[6]
Mode
DCD
DSR
CTS
Rx
RI
0:
1:
0:
1:
0:
1:
0:
1:
0:
1:
0:
1:
RWU_
Bit[5]
Mode
Disabled
Enable Wake Up Trigger on CTS State Changes.
Disabled
Enable Wake Up Trigger on DCD State Changes.
Disabled
Enable Wake Up Trigger on RI State Changes.
Disabled
Enable Wake Up Trigger on DSR State Changes.
Disabled
Enable Wake Up Trigger on RXD State Changes.
Engages Remote Wakeup,
The device issues Disconnect Signal.
engages remote wakeup,
the Device issues resume signal.
EWU_
Bit[4]
Enable Wake Up Trigger on DCD:
Enable Wake Up Trigger on DSR:
Enable Wake Up Trigger on RXD:
Enable Wake Up Trigger on CTS:
Rx
Enable Wake Up Trigger on RI:
Remote Wakeup Mode:
Defi nition
Reserved
Reserved
EWU_
Bit[3]
DSR
EWU_
Bit[2]
RI
EWU_
Bit[1]
DCD
Default
EWU_
Bit[0]
Value
CTS
0
0
1
0
0
1
0
0
Rev.
1.2