mcs7840 MosChip, mcs7840 Datasheet - Page 32
mcs7840
Manufacturer Part Number
mcs7840
Description
Usb-2.0 To Four Serial Ports
Manufacturer
MosChip
Datasheet
1.MCS7840.pdf
(41 pages)
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Page 32
MCS7840
USB-2.0 to Four Serial Ports
Serial Port 1 – Device Confi guration Register 1
Reserved
DCR1
Bit[7]
[1:0]
[3:2]
Bit
4
5
6
7
Power-Down
Interrupt IN
Interrupt IN
Reserved
Endpoint
GPIO_I_
Endpoint
Bypass
Control
Status
Status
Name
Bit[6]
Tx_I_
INHB
PLL_
PMG
PMG
RW_
Power-Down
00:
01:
10:
11:
00:
01:
10:
11:
0:
1:
0:
1:
0:
1:
Bypass
Control
Bit[5]
PLL_
10 mA
12 mA
10 mA
12 mA
Enable the USB Remote Wakeup function
Inhibit the USB Remote Wakeup function
Enables PLL Power-Down
Disables PLL Power-Down
Interrupt Endpoint returns 5 Bytes of data.
Interrupt Endpoint returns 5 Bytes + 8 Bytes of the Bulk-In/Out
memory controller status
6 mA
8 mA (Default)
6 mA
8 mA (Default)
of Serial output signals TxD, DTR_n and RTS_n:
These two bits set the output current
These two bits set the output current
Bit[4]
INHB
RW_
RW_INH Remote Wake Inhibit:
of the GPIO lines:
Defi nition
Reserved
Bit[3]
Tx_I_
PMG
Bit[2]
Bit[1]
GPIO_I_
PMG
Default
Bit[0]
Value
01
01
0
0
0
1
Rev.
1.2
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