h8s-2158 Renesas Electronics Corporation., h8s-2158 Datasheet - Page 630

• Manufacturer Part Number: h8s-2158
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

Section 18 Universal Serial Bus Interface (USB)
Rev. 3.00 Jan 25, 2006 page 578 of 872
REJ09B0286-0300
Bit
4
3
Bit Name Initial Value R/W
EP3TF
EP2TF
0
0
R/(W) * Endpoint 3 Transfer Failure Flag
R/(W) * Endpoint 2 Transfer Failure Flag
Description
Indicates that the endpoint 3 host input transfer has been
completed abnormally.
0: Indicates that the endpoint 3 is in a transfer wait state.
[Clearing condition]
1: Indicates that the endpoint 3 host input transfer (IN
[Setting conditions]
Indicates that the endpoint 2 host input or output transfer
has been completed abnormally.
0: Indicates that the endpoint 2 is in a transfer wait state.
[Clearing condition]
1: Indicates that the endpoint 2 host input transfer (IN
[Setting conditions]
transaction) has been completed abnormally.
transaction) or output transfer (OUT transaction) has
been completed abnormally.
0 is written to EP3TF after EP3TF = 1 has been read.
An ACK handshake cannot be achieved after IN
token has been received and data has been
transferred.
Data cannot be sent because the FIFO is empty after
an IN token has been received (NAK transmission).
0 is written to EP2TF after EP2TF = 1 has been read.
An ACK handshake cannot be achieved after IN
token has been received and data has been
transferred.
Data cannot be sent because the FIFO is empty after
an IN token has been received (NAK transmission).
Data cannot be received because the FIFO is full
after an OUT token has been received (NAK
transmission).
A communication error occurs after the OUT token
has been received.