XC68HC08KH12 Motorola, XC68HC08KH12 Datasheet - Page 133

• Manufacturer Part Number: XC68HC08KH12
• Description: MICROCONTROLLER
• Manufacturer: Motorola

MC68HC(7)08KH12
MOTOROLA
—
Rev. 1.0
RSEQ — HUB Endpoint 0 Receive Sequence Bit
SETUP — HUB SETUP Token Detect Bit
TX1ST — HUB Transmit First Flag
TX1STR — Clear HUB Transmit First Flag
RPSIZ3-RPSIZ0 — HUB Endpoint 0 Receive Data Packet Size
This read only bit indicates the type of data packet last received for
HUB Endpoint 0 (DATA0 or DATA1).
This read only bit indicates that a valid SETUP token has been
received.
This read only bit is set if the HUB Endpoint 0 Data Transmit Flag
(TXDF) is set when the USB control logic is setting the HUB Endpoint
0 Data Receive Flag (RXDF). In other words, if an unserviced
Endpoint 0 Transmit Flag is still set at the end of an endpoint 0
reception, then this bit will be set. This bit lets the firmware know that
the Endpoint 0 transmission happened before the Endpoint 0
reception. Reset clears this bit.
Writing a logic 1 to this write only bit will clear the TX1ST bit if it is set.
Writing a logic 0 to the TX1STR has no effect. Reset clears this bit.
These read only bits store the number of data bytes received for the
last OUT or SETUP transaction for HUB Endpoint 0. These bits are
not affected by reset.
1 = DATA1 Token received in last HUB Endpoint 0 Receive
0 = DATA0 Token received in last HUB Endpoint 0 Receive
1 = Last token received for hub endpoint 0 was a SETUP token
0 = Last token received for hub endpoint 0 was not a SETUP token
1 = IN transaction occurred before SETUP/OUT
0 = IN transaction occurred after SETUP/OUT
Universal Serial Bus Module (USB)
I/O Register Description of the HUB function
Universal Serial Bus Module (USB)
Advance Information
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