SH7670 Datasheet, PDF (739/1292 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
Initial
Value R/W
Description
1,0
PID[1:0]
00
R/W Even if software modifies the PID bits to NAK after
this module has issued S-SPLIT of the split
transaction for the selected pipe (while CSSTS
indicates 1), this module continues the transaction
until C-SPLIT completes. On completion of C-
SPLIT, this module sets PID to NAK.
(2) When the function controller function is selected
This module modifies the setting of these bits as
follows.
• This module modifies PID to NAK on receiving
the setup packet. Here, this module sets VALID
to 1. Software cannot modify the setting of PID
until software sets VALID to 0.
• This module sets PID to STALL (11) on
receiving the data of the size exceeding the
maximum packet size when software has set
PID to BUF.
• This module sets PID to STALL (1x) on
detecting the control transfer sequence error.
• This module sets PID to NAK on detecting the
USB bus reset.
This module does not reference to the setting of the
PID bits while the SET_ADDRESS request is
processed (auto processing).
Notes: 1. This bit is always read as 0. Only 1 can be written to.
2. Only 1 can be written to.
Rev. 1.00 Nov. 14, 2007 Page 713 of 1262
REJ09B0437-0100