Toshiba H1 Series - Manual (Page 446)

TMP92CZ26A
92CZ26A-443
(a) Single packet mode
This is data sequence of single packet mode when CPU bus interface is used.
Figure 3.16.15 is receiving sequence. Figure 3.16.16 is transmitting sequence.
Main of this chapter is access to FIFO. Data sequence with USB host refer to
chapter 5.
Endpoint 0 can’t be changed mode for exclusive single packet mode. Single
packet and dual packet of endpoint 1 to 3 can change by setting Epx_SINGLE
register. When transferring, don’t change packet.
Figure 3.16.15 Receiving Sequence in Single Packet Mode
IDLE
DATASET register
• Check bit of EPx_DSET_A
SIZE register
• Size of SIZE_A_L confirmation
•
Size of SIZE_A_H confirmation
RD receiving data of size in
appricable endpoint
DATASET
= 1
DATASET register
• Set bit of EPx_D SET_A
• Assert EPx_DATASET signal
• Clear receiving data in FIFO
• Clear applicable bit of DATASET
register
Interrupt by EPx_FULLA
Check DATASET register
Receive valid data
DATASET
= 0
Wait receiving data