r5s77631ay266bgv Renesas Electronics Corporation., r5s77631ay266bgv Datasheet - Page 1390

• Manufacturer Part Number: r5s77631ay266bgv
• Description: Renesas 32-bit Risc Microcomputer Superhtm Risc Engine Family Sh-4a Series
• Manufacturer: Renesas Electronics Corporation.

Section 31 Multimedia Card Interface (MMCIF)
31.3.23 Chattering Elimination Pulse Setting Register (CHATR)
CHATR specifies the cycle of the chattering elimination pulse to eliminate the chattering that
arises in the card identification signal.
Chattering elimination pulse cycle Term (sec) = 2
Rev. 1.00 Oct. 01, 2007 Page 1324 of 1956
REJ09B0256-0100
Bit
7 to 5
4 to 0
Pck1:
Chattering: An unstable state in which ON and OFF repeatedly occur immediately after the
Bit Name

CHAT
Peripheral clock 1
switching of the card identification signal.
Initial value:
Initial
Value
000
10011
R/W:
Bit:
—
R
7
0
R/W
R
R/W
—
R
6
0
Description
The read value is 0. The write value should be 0.
Frequency for Chattering Elimination Pulse Cycle
00000 to 01000 and 11000 to 11111: setting prohibited
—
R
5
0
R/W
char
4
1
/Pck1 frequency (MHz)
R/W
3
0
CHAT
R/W
2
0
R/W
1
1
R/W
0
1