SH7670 Datasheet, PDF (771/1292 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7670 Series

Bit
Bit Name
8
SQCLR
Section 17 USB 2.0 Host/Function Module (USB)
Initial
Value
0
R/W
R/W*¹
Description
Toggle Bit Clear*³*⁴
This bit should be set to 1 to clear the expected
value (to set DATA0 as the expected value) of the
sequence toggle bit for the next transaction of the
pertinent pipe.
0: Invalid
1: Specifies DATA0.
Setting this bit to 1 through software allows this
module to set DATA0 as the expected value of the
sequence toggle bit of the pertinent pipe. This
module always sets this bit to 0.
When the host controller function is selected, setting
this bit to 1 for the pipe for bulk OUT transfer, this
module starts the next transfer of the pertinent pipe
with the PING token.
Set the SQCLR bit to 1 while CSCTS 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.
Rev. 1.00 Nov. 14, 2007 Page 745 of 1262
REJ09B0437-0100