mcs7840 MosChip, mcs7840 Datasheet - Page 35

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

Rev.
Serial Port (2, 3, & 4) – Device Confi guration Register 1
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.
1.2
Reserved
DCR1
Bit[7]
[1:0]
[3:2]
Bit
4
5
6
7
Reserved
Reserved
Reserved
Reserved
Reserved
Name
Bit[6]
Tx_I_
INHB
PMG
RW_
00:
01:
10:
11:
0:
1:
Reserved
Bit[5]
10 mA
12 mA
Enable the USB Remote Wakeup function
Inhibit the USB Remote Wakeup function
6 mA
8 mA (Default)
of Serial output signals TxD, DTR_n and RTS_n:
These two bits set the output current
Bit[4]
INHB
RW_
RW_INH Remote Wake Inhibit:
Defi nition
Reserved
Reserved
Reserved
Reserved
Bit[3]
Tx_I_
PMG
USB-2.0 to Four Serial Ports
Bit[2]
MCS7840
Bit[1]
Reserved
Default
Bit[0]
Value
00
01
0
0
0
1
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