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Section 26 USB 2.0 Host/Function Module
R01UH0134EJ0400 Rev. 4.00 Page 1467 of 2108
Sep 24, 2014
SH7262 Group, SH7264 Group
Bit Bit Name
Initial
Value R/W Description
15 to 0 TRNCNT[15:0] All 0 R/W This module increments the value of these bits by
one when all of the following conditions are satisfied
on receiving the packet.
TRENB is 1.
(TRNCNT set value current counter value + 1)
on receiving the packet.
The payload of the received packet agrees with
the set value in the MXPS bits.
This module clears the value of these bits to 0 when
any of the following conditions are satisfied.
All the following conditions are satisfied.
TRENB is 1.
(TRNCNT set value = current counter value + 1)
on receiving the packet.
The payload of the received packet agrees with
the set value in the MXPS bits.
All the following conditions are satisfied.
TRENB is 1.
This module has received a short packet.
The following condition is satisfied.
The TRCLR bit has been set to 1.
For the pipe in the transmitting direction, set these
bits to 0.
When the transaction counter is not used, set these
bits to 0.
Modify these bits while CSSTS is 0, PID is NAK, and
TRENB is 0.
Before modifying these bits after modifying the PID
bits for the corresponding pipe from BUF to NAK,
check that CSSTS and PBUSY are 0. However, if the
PID bits have been modified to NAK by this module,
checking PBUSY is not necessary.
To modify the value of these bits, set TRNCNT to 1
before setting TRENB to 1.