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Section 26 USB 2.0 Host/Function Module
Page 1456 of 2108 R01UH0134EJ0400 Rev. 4.00
Sep 24, 2014
SH7262 Group, SH7264 Group
PID Transfer Type
Transfer Direction
(DIR Bit) Operation of This Module
01 (BUF) Isochronous Transmitting
direction (DIR = 1)
Transmits data in response to the token
from the USB host if the corresponding
FIFO buffer is ready for transmission.
Transmits the zero-length packet if not
ready.
10 (STALL) or
11 (STALL)
Bulk or interrupt Operation does not
depend on the
setting.
Returns STALL in response to the token
from the USB host.
Isochronous Operation does not
depend on the
setting
Returns nothing in response to the
token from the USB host.
(2) PIPEnCTR (n = 6 to 9)
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Bit:
Initial value:
R/W:
0000000000000000
R R R/W* R/W R R R/W R/W* R/W* R R R R R R/W R/W
BSTS — CSCLR CSSTS — — ACLRM SQCLR SQSETSQMONPBUSY — — — PID[1:0]
Bit Bit Name
Initial
Value R/W Description
15 BSTS 0 R Buffer Status
Indicates the FIFO buffer status for the pertinent
pipe.
0: Buffer access is disabled.
1: Buffer access is enabled.
The meaning of this bit depends on the settings of
the DIR, BFRE, and DCLRM bits as shown in table
26.10.
14 0 R Reserved
This bit is always read as 0. The write value should
always be 0.