TH6503 Datasheet, PDF (12/24 Pages) List of Unclassifed Manufacturers – USB Low-Speed Interface

TH6503 USB Low-Speed Interface
Register
Description
(continued)
EP0/1/2 FIFO (write only)
Internal Address: b000, b001 or b010
Size:
8 bytes
The device user data is stored temporarily at this location for transfer to the USB host.
• the address b000 indicates a data transfer from EP0
• the address b001 indicates a data transfer from EP1
• the address b010 indicates a data transfer from EP2
• only one of the three addresses may be used at any one time; FIFO is used alternately, de-
pending on the device function
• will be flushed with a new SETUP token for as long as bit SET in CntOutRegister is set
SerialFlagRegister (write only)
Internal address: b100
Size:
8 bits
All endpoints must remain deactivated until USB reset has been decoded (Statusregister <6>).
Bit
Number
7-6
5
4
3
2
1
0
Bit
Mnemonic
X
EO2
Reset
Status
0
0
EO1
0
EI2
0
EI1
0
EI0
0
EO0
0
Function
reserved - must be set to 0
Enable EP2 OUT
activate endpoint 2 OUT
? Microcontroller can set the bit after detecting a USB reset in order to
enable data transfers from the USB host via EP2
? If set the CntOut Register bit <7-6> indicates the source of the last OUT
transfer binary coded
Enable EP1 OUT
activate endpoint 1 OUT
? Microcontroller can set the bit after detecting a USB reset in order to
enable data transfers from the USB host via EP1
? If set the CntOut Register bit <7-6> indicates the source of the last OUT
transfer binary coded
Enable EP2 IN
activate endpoint 2 IN
? Microcontroller can set the bit after detecting a USB reset in order to
enable data transfers to the USB host via EP2
Enable EP1 IN
activate endpoint 1 IN
? Microcontroller can set the bit after detecting a USB reset in order to
enable data transfers to the USB host via EP1
Enable EP0 IN
activate endpoint 0 (IN transfer)
? is set automatically after detecting a USB reset to enable IN control
transfers to the USB host
Enable EP0 OUT
activate endpoint 0 (OUT transfer)
? is set automatically after detecting a USB reset to enable OUT control
transfers to the USB host
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