r5s77631ay266bgv Renesas Electronics Corporation., r5s77631ay266bgv Datasheet - Page 1318

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

Section 30 SIM Card Module (SIM)
30.3.6
SCSSR is an 8-bit readable/writable register that indicates the operating state of the smart card
interface.
Rev. 1.00 Oct. 01, 2007 Page 1252 of 1956
REJ09B0256-0100
Bit
7
Bit Name
TDRE
Serial Status Register (SCSSR)
Initial
Value
1
Initial value:
R/W:
Bit:
R/W
R/W
TDRE
R/W
7
1
RDRF ORER
R/W
Description
Transmit Data Register Empty
Indicates that data was transferred from the transmit data
register (SCTDR) to the transmit shift register (SCTSR),
and that the next serial transmit data can be written to
SCTDR.
0: Indicates that valid transmit data is written to SCTDR
[Clearing conditions]
•
•
1: Indicates that there is no valid transmit data in SCTDR
[Setting conditions]
•
•
•
6
0
When the TE bit in CCSCR is 1, and data is written to
SCTDR
When 0 is written to the TDRE bit
On reset
When the TE bit in SCSCR is 0
When data is transferred from SCTDR to SCTSR, and
data can be written to SCTDR
R/W
5
0
R/W
ERS
4
0
R/W
PER
3
0
TEND WAIT_
R
2
1
R/W
ER
1
0
−
R
0
0