TXCNT: Transmit FIFO Byte-Count Register (Endpoint-Indexed)
Write Only
Address: 36H
Default: XXXX_XXXX
System Reset or USB Reset
Bit
Bit
Function
Number
Mnemonic
Reserved:
7
-
Write zero to this bit.
Reserved:
6
-
Write zero to this bit.
Reserved:
5
-
Write zero to this bit.
Reserved:
4
-
Write zero to this bit.
Store transmits byte count. Maximum is 8 bytes.
3:0
TXBC[3:0]
Transmit Byte Count
TXCON: Transmit FIFO Control Register (Endpoint-Indexed)
Read/Write
Address: 34H
Default: 0XXX_XXXX
System Reset or USB Reset
Bit
Bit
Function
Number
Mnemonic
Transmit FIFO Clear:
Set this bit to flush the entire transmit FIFO. All FIFO statuses are reverted
7
TXCLR
to their reset states. Hardware clears this bit when the flush operation is
completed.
Reserved:
6
-
Write zero to this bit.
Reserved:
5
-
Write zero to this bit.
Reserved:
4
-
Write zero to this bit.
Reserved:
3
-
Write zero to this bit.
Reserved:
2
-
Write zero to this bit.
Reserved:
1
-
Write zero to this bit.
Reserved:
0
-
Write zero to this bit.
Note: Before write “1” to TXCLR, firmware must write “1” to RXFFRC.
MEGAWIN
MPC235 Data Sheet
25
MEGAWIN [ MEGAWIN TECHNOLOGY CO., LTD ]
