Datasheet

Section 16 USB Function Module (USB)
R01UH0309EJ0500 Rev. 5.00 Page 965 of 1408
Sep 24, 2012
H8S/2456, H8S/2456R, H8S/2454 Group
16.3.18 Data Status Register 0 (DASTS0)
DASTS0 indicates whether the transmit FIFO buffers contain valid data. A bit is set when data is
written to the corresponding FIFO buffer and the packet enable state is set, and cleared when all
data has been transmitted to the host.
Bit Bit Name
Initial
Value R/W Description
7
6
5
4
3
2
1
⎯
⎯
⎯
⎯
⎯
⎯
⎯
0
0
0
0
0
0
0
⎯
⎯
⎯
⎯
⎯
⎯
⎯
Reserved
These bits are always read as 0. The write value
should always be 0.
0 EP0i DE 0 R EP0i Data Present
This bit is set when the endpoint 0i FIFO buffer
contains valid data.