SH7720 Datasheet, PDF (1062/1524 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series

Section 30 SIM Card Module (SIM)
Initial
Bit Bit Name Value R/W Description
1
WAIT_ER 0
R/W Wait Error
Indicates the wait timer error status.
0: Indicates that the interval between the start of two
successive characters has not exceeded the etu set by
SCWAIT.
[Clearing conditions]
• On reset
• When 0 is written to the WAIT_ER flag
1: Indicates that the interval between the start of two
successive characters has exceeded the etu set by
SCWAIT.
[Setting conditions]
• In T = 0 mode, when the interval between the start of a
character to be received and immediately preceding
transmitted or received character exceeds the (value of 60
× SCWAIT: Operation wait time) etu.
• In T = 1 mode, when the interval between the start of two
successive received characters exceeds the (SCWAIT
value: Character protection time) etu.
Notes: 1. Even if the RE bit in SCSCR is cleared to 0, the
WAIT_ER flag is unaffected, and the previous state
is retained.
2. In T = 0 mode, even if the setting condition for the
WAIT_ER flag is satisfied when the RE bit is set to
1, the WAIT_ER flag may not be set to 1. In this
case, the RE bit has been set to 1, then the
WAIT_ER flag is set to 1 after 60 × (SCWAIT + n)
etu (n ≥ 0: depending on the timing for setting the
RE bit to 1) since the last transmission or reception.
3. In T = 0 mode, if the WAIT_ER flag does not need
to be set to 1 after 60 × (SCWAIT + n) etu since the
last transmission or reception, the mode should be
changed from T = 0 to T = 1, and changed to T = 0
again by the PB bit in SCSCMR. In T = 1 mode, if
the WAIT_ER flag does not need to be set to 1 after
(SCWAIT) etu since the last reception, the mode
should be changed from T = 1 to T = 0, and
changed to T = 1 again by the PB bit in SCSCMR.
Rev. 3.00 Jan. 18, 2008 Page 1000 of 1458
REJ09B0033-0300