Serial Input Data Register (Sidr0/1/2/3/4)/ Serial Ouput Data Register (Sodr0/1/2/3/4); Serial Status Register (Ssr0/1/2/3/4) - Fujitsu F2MC-16LX MB90580 Series Hardware Manual

12.3 Register and Register Details
12.3.3

Serial Input Data Register (SIDR0/1/2/3/4)/ Serial Ouput Data Register (SODR0/1/2/3/4)

Serial input register/Serial output register
Address : 000022
000026
00002A
000084
00008A
Read/write
Initial value
These registers are data buffer registers for transmission and reception.
When a data item is seven bits long, the high-order one bit (D7) is invalid. To write a data item in the SODR
register, ensure that '1' is written to TDRE of the SSR register.
Note: Writing a data item at this address means to write it to the SODR register. Reading this
address means to read the SIDR register.

12.3.4 Serial Status Register (SSR0/1/2/3/4)

Serial input register/Serial output register
Address : 000022
000026
00002A
000084
00008A
Read/write
Initial value
The SSR register consists of the flags indicating the UART operation.
[bit 15] PE (Parity error)
This interrupt request flag is set when a parity error occurs during reception.
To clear a set flag, write '0' to the REC bit (bit 10) of the SCR register.
When this bit is set, the data in SIDR is invalid.
0 No parity error has occurred.
A parity error has occurred.
1
[bit 14] ORE (Overrun error):
This interrupt request flag is set when an overrun error occurs during reception.
To clear a set flag, write '0' to the REC bit (bit 10) of the SCR register.
When this bit is set, the data in SIDR is invalid.
No overrun error has occurred.
0
An overrun error has occurred.
1
130 Chapter 12: UART
H
7 6
H
H
D7 D6
H
H
(R/W) (R/W) (R/W)
(X) (X)
H
7 6
H
H
D7 D6
H
H
(R/W) (R/W) (R/W)
(X) (X)
5 4 3
D5 D4 D3
(R/W) (R/W) (R/W)
(X) (X) (X)
5 4 3
D5 D4 D3
(R/W) (R/W) (R/W)
(X) (X) (X)
2 1 0
SIDR0/SODR0
D2 D1 D0
SIDR1/SODR1
SIDR2/SODR2
SIDR3/SODR3
(R/W) (R/W)
SIDR4/SODR4
(X) (X) (X)
2 1 0
SIDR0/SODR0
D2 D1 D0
SIDR1/SODR1
SIDR2/SODR2
SIDR3/SODR3
(R/W) (R/W)
SIDR4/SODR4
(X) (X) (X)
[initial value]
[initial value]
Bit number
Bit number
MB90580 Series