Configuration And Functions Of Uart Registers - Fujitsu MB90480 Series Hardware Manual

19.3 Configuration and Functions of UART Registers

This section describes the configuration and functions of the registers used by the
UART.
■
List of UART registers
Figure 19.3-1 lists the UART registers.
15
7
000020 MD1 MD0 CS2 CS1
H
(R/W) (R/W) (R/W) (R/W) (R/W) (R/W) (R/W) (R/W) Read/write
(0)
15
000021 PEN
H
(R/W) (R/W) (R/W) (R/W) (R/W) (W) (R/W) (R/W) Read/write
(0)
7
000022 D7
H
(R/W) (R/W) (R/W) (R/W) (R/W) (R/W) (R/W) (R/W) Read/write
(X)
15
000023 PE
H
(R)
(0)
15
000025 MD SRST
H
(R/W) (R/W)
(0)
Note:
When setting a UART register, set the communication mode while the UART is not in operation.
When the communication mode is changed while operation is in progress, the sent/received data
cannot be assured.
Figure 19.3-1 List of UART registers
8 7
SCR
SSR
CDCR
8 bits
6 5 4 3
CS0
(0) (0) (0) (0)
14 13 12 11
P SBL CL A/D
(0) (0) (0) (0)
6 5 4 3
D6 D5 D4 D3
(X) (X) (X) (X)
14 13 12 11
ORE FRE RDRF TDRE BDS
(R) (R) (R) (R) (R/W) (R/W) (R/W) Read/write
(0) (0) (0) (1)
14 13 12 11
- - DIV3 DIV2 DIV1 DIV0
(-) (-) (R/W) (R/W) (R/W) (R/W) Read/write
(0) (-) (-) (0)
SMR
SIDR(R)/SODR(W)
-
8 bits
2 1 0
SCKE SOE Serial mode register (SMR)
Reserved
(X) (0) (0) Initial value
10 9 8
REC RXE TXE Serial control register (SCR)
(1) (0) (0) Initial value
2 1 0 Serial input register (SIDR)/
D2 D1 D0 serial output register (SODR)
(X) (X) (X) Initial value
10 9 8
RIE TIE Serial status register (SSR)
(0) (0) (0) Initial value
10 9 8 Communication prescaler
control register (CDCR)
(0) (0) (0) Initial value
CHAPTER 19 UART
0
(R/W)
(R/W)
(R/W)
411