mcs7715 MosChip, mcs7715 Datasheet - Page 25

• Manufacturer Part Number: mcs7715
• Description: Usb 1.1 To Single Uart And Printer Port
• Manufacturer: MosChip

Rev. 1.6
Device Control Register
Register:
Description:
Offset:
Permissions:
Access Condition:
Note: Three bits (0, 1, & 3) of this register are logically inverted from the state of the electrical signals
appearing at the physical device pins they control. The physical pins for these three bits are all Active-
Low signals, so writing a “one” in this register will enable or activate the desired function.
The physical pin associated with Bit-2 (nINIT) of this register is also an Active-Low electrical signal.
This bit is not inverted however, so in order to start the Initialization process, this bit must be set LOW.
Bit
0*
1*
3*
2
4
5
6
7
Unused
Bit[7]
STROBE
AUTOFD
SLCTIN
Unused
Unused
Unused
Name
nINIT
DIR
DCR
Device Control Register
002
Read/Write
Application Number = 0x0100
Unused
Bit[6]
Logic 0 = Sets the nSTROBE pin to high.
Logic 1 = Sets the nSTROBE pin to low. PD7-PD0 data are latched into
Logic 0 = Sets the nAUTOFDX pin to high. No auto feed function.
Logic 1 = Sets the nAUTOFDX pin to low. Printer generates auto line feed
Logic 0 = Peripheral/printer starts its initialization routine.
Logic 1 = Normal Operation.
Logic 0 = Sets the nSLCTIN pin to high. Printer is not selected.
Logic 1 = Sets the nSLCTIN pin to low. Selects the printer.
Not uset set to 0
Logic 0 = PD7-PD0 pins are configured for output mode.
Logic 1 = PD7-PD0 pins are configured for input mode.
Not used, set to 0.
Not used, set to 0.
Bit[5]
DIR
printer
after each line is printed.
Unused
Bit[4]
USB 1.1 to Single UART and Printer Port
SLCTIN
Bit[3]
Description
Bit[2]
nINIT
MCS7715
AUTOFD
Bit[1]
STROBE
Bit[0]
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