MC68HC08JB1 Datasheet, PDF (130/216 Pages) Motorola, Inc – Microcontrollers

9.8.11 USB Status Register 1
Address: $003E
Bit 7
6
5
4
3
2
1
Bit 0
Read: 0
TXACK TXNAK TXSTL
0
0
0
0
Write:
Reset: 0
0
0
0
0
0
0
0
= Unimplemented
U = Unaffected by reset
Figure 9-25. USB Status Register 2 (USR1)
TXACK — ACK Token Transmit Bit
This read-only bit indicates that an ACK token has been transmitted.
This bit is updated at the end of the data transmission.
1 = Last token transmitted for endpoint 0 was an ACK token
0 = Last token transmitted for endpoint 0 was not an ACK token
TXNAK — NAK Token Transmit Bit
This read-only bit indicates that a TXNAK token has been transmitted.
This bit is updated at the end of the data transmission.
1 = Last token transmitted for endpoint 0 was a NAK token
0 = Last token transmitted for endpoint 0 was not a NAK token
TXSTL — STALL Token Transmit Bit
This read-only bit indicates that a STALL token has been transmitted.
This bit is updated at the end of the data transmission.
1 = Last token transmitted for endpoint 0 was a STALL token
0 = Last token transmitted for endpoint 0 was not a STALL token
Technical Data
130
MC68HC08JB1 — Rev. 2.1
Freescale Semiconductor