Datasheet

Rev. 3.00, 03/04, page 367 of 830
Bit Bit Name Initial Value R/W Description
3 PER 0 R/(W)*
1
Parity Error
[Setting condition]
When a parity error is detected during reception
[Clearing condition]
When 0 is written to PER after reading PER = 1
2 TEND 1 R Transmit End
TEND is set to 1 when the receiving end
acknowledges no error signal and the next transmit
data is ready to be transferred to TDR.
[Setting conditions]
• When both TE in SCR and ERS are 0
• When ERS = 0 and TDRE = 1 after a specified
time passed after the start of 1-byte data
transfer. The set timing depends on the register
setting as follows.
When GM = 0 and BLK = 0, 2.5 etu*
2
after
transmission start
When GM = 0 and BLK = 1, 1.5 etu*
2
after
transmission start
When GM = 1 and BLK = 0, 1.0 etu*
2
after
transmission start
When GM = 1 and BLK = 1, 1.0 etu*
2
after
transmission start
[Clearing conditions]
• When 0 is written to TDRE after reading
TDRE = 1
• When a TXI interrupt request is issued allowing
DTC to write the next data to TDR
1 MPB 0 R Multiprocessor Bit
Not used in smart card interface mode.
0 MPBT 0 R/W Multiprocessor Bit Transfer
Write 0 to this bit in smart card interface mode.
Notes: 1. Only 0 can be written, to clear the flag.
2. etu: Element Time Unit (time taken to transfer one bit)