SH7670 Datasheet, PDF (762/1292 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7670 Series

Section 17 USB 2.0 Host/Function Module (USB)
Bit
Bit Name
7
SQSET
6
SQMON
Initial
Value
0
0
R/W
R/W*¹
R
Description
Toggle Bit Set
This bit should be set to 1 to setDATA1 as the
expected value of the sequence toggle bit for the
next transaction of the pertinent pipe.
0: Invalid
1: Specifies DATA1.
Setting this bit to 1 through software allows this
module to set DATA1 as the expected value of the
sequence toggle bit of the pertinent pipe. This
module always sets this bit to 0.
Set the SQSET bit to 1 while CSSTS is 0 and PID is
NAK.
Before modifying this bit 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 through software is not necessary.
Toggle Bit Confirmation
Indicates the expected value of the sequence toggle
bit for the next transaction of the pertinent pipe.
0: DATA0
1: DATA1
When the pertinent pipe is not for the isochronous
transfer, this module allows this bit to toggle upon
normal completion of the transaction. However, this
bit is not allowed to toggle when a DATA-PID
disagreement occurs during the receiving transfer.
Rev. 1.00 Nov. 14, 2007 Page 736 of 1262
REJ09B0437-0100