參數(shù)資料
型號(hào)： MCS7840
廠商： Electronic Theatre Controls, Inc.
英文描述： USB-2.0 to Four Serial Ports
中文描述： 的USB 2.0 4個(gè)串行端口
文件頁數(shù)： 21/41頁
文件大小： 447K
代理商： MCS7840
MCS7840
USB-2.0 to Four Serial Ports
Rev.
1.2
Page 21
Con
fi
guration Options
Four serial ports can be con
fi
gured for operation.
To program and access the serial ports via software, endpoint numbers have been assigned so that serial
ports can be con
fi
gured from the USB side.
Endpoint
Type
Function
Size (Bytes)
(USB-1.1 / USB-2.0)
8 / 64
64 / 512
64 / 512
64 / 512
64 / 512
64 / 512
64 / 512
64 / 512
64 / 512
5 or 13 *
0
1
2
3
4
5
6
7
8
9
Control Endpoint
Bulk-In
Bulk-Out
Bulk-In
Bulk-Out
Bulk-In
Bulk-Out
Bulk-In
Bulk-Out
Interrupt
* Controlled by DCR1 bit-6
Default Functionality
Serial Port – 1
Serial Port – 1
Serial Port – 2
Serial Port – 2
Serial Port – 3
Serial Port – 3
Serial Port – 4
Serial Port – 4
Status Endpoint
Serial Port Set/Get Commands
Vendor commands are the vendor speci
fi
c USB setup commands. The purpose of the vendor commands is
to set/get the contents of the application registers. The following table provides information on the various
vendor speci
fi
c commands.
Windex [7:0] is the register index from where data is to be read.
Brequest speci
fi
es whether to read or write.
0x0E = write to the application register
0x0D = read from the application register
Wvalue speci
fi
es the application number and data to be written (ww = data).
0x01ww is the application number for Serial Port-1
0x02ww is the application number for Serial Port-2
0x03ww is the application number for Serial Port-3
0x04ww is the application number for Serial Port-4
0x09ww is the application number for EEPROM Write/Read
0x00ww is the application number provided for accessing the Control Registers which control the
UARTs. It is possible to enable higher BAUD rates, and features like auto hardware
fl
ow control using
the Control Registers
Note:
“N” in Wvalue and Register Name columns indicate the corresponding serial port number.
Windex is the offset of the register to read/write.
Wlength is the length of the data to read/write.
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參數(shù)描述
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