mcs7840 MosChip, mcs7840 Datasheet - Page 33

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

Rev.
Serial Port 1 – Device Confi guration Register 2
Note: Wake up defi ned above can work only when DCR0[6] = 0 and DCR1[4] = 0.
1.2
SHDN_
DCR2
Bit[7]
POL
Bit
0
1
2
3
4
5
6
7
Reserved
Reserved
SHDN_
EWU_
EWU_
EWU_
EWU_
EWU_
RWU_
Name
Bit[6]
Mode
DCD
DSR
CTS
POL
Rx
RI
0:
1:
0:
1:
0:
1:
0:
1:
0:
1:
0:
1:
Reserved
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.
Pin 12 Active Low Shut-Down Signal.
Pin 12 Active High Shut-Down 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:
SHDN Polarity:
Defi nition
EWU_
Bit[3]
DSR
USB-2.0 to Four Serial Ports
EWU_
Bit[2]
RI
MCS7840
EWU_
Bit[1]
DCD
Default
EWU_
Bit[0]
Value
CTS
0
0
1
0
0
1
0
0
Page 33