Datasheet

Section 15 Universal Serial Bus Interface (USB)
REJ09B0140-0900 Rev. 9.00 Page 523 of 846
Sep 16, 2010
H8S/2215 Group
Bit Bit Name Initial Value R/W Description
3 EP2iALL
EMPTYS
1 R EP2i FIFO All Empty Status
EP2i FIFO has a dual FIFO configuration. This flag is
set to 1 if both FIFOs are empty. (Corresponds to a
UDSR/EP2iDE negative-polarity signal.)
2 EP2oREADY 0 R EP2o Data Ready
EP2o FIFO has a dual-FIFO configuration. This flag is
set if there is a valid data in at least one EP2o FIFO.
This flag is cleared to 0 if there is no valid data in
EP2o FIFO. This flag is a status flag and cannot be
cleared. The corresponding interrupt output is EXIRQ0
or EXIRQ1.
1 EP2iTR 0 R/(W)
*
EP2i Transmit Request
Set to 1 if the EP2i FIFO is empty when an IN token is
sent from the host to EP2i. The corresponding
interrupt output is EXIRQ0 or EXIRQ1.
0 EP2iEMPTY 1 R EP2i FIFO Empty
EP2i FIFO has a dual-FIFO configuration. This flag is
set if at least one EP2i FIFO is empty. This flag is
cleared to 0 if EP2i FIFO is full. This flag is a status
flag and cannot be cleared. The corresponding
interrupt output is EXIRQ0 or EXIRQ1.
Note: * The write value should always be 0 to clear this flag.