mb91307r Fujitsu Microelectronics, Inc., mb91307r Datasheet - Page 58

• Manufacturer Part Number: mb91307r
• Description: 32-bit Microcontroller Cmos Fr60 Mb91307 Series
• Manufacturer: Fujitsu Microelectronics, Inc.

58
MB91307 Series
6. UART
(1) Overview
(2) Register List
• Serial input register/Serial output registe (SIDR/SODR)
• Serial status register (SSR)
• Serial mode register (SMR)
• Serial control register (SCR)
• DRCL register (DRCL)
The UART is an I/O port for asynchronous (start-stop synchronized) or CLK synchronized transmission, providing
the following features. This device features a 3-channel built-in UART.
• Full duplex double buffer
• Asynchronous (start-stop synchronized) or CLK synchronized transmission enabled
• Supports multi-processor mode
• Fully programmable baud rate
• Independent baud rate setting from external clock enabled.
• Error detection functions (parity, framing, overrun)
• Transfer signal NRZ encoded
• DMA transfer start from interrupt enabled
• DMAC interrupt source cleared by write operation to DRCL register.
Built-in timer can be set to any desired baud rate (see U-TIMER description)
15
PEN
MD1
PE
D7
⎯
7
7
7
7
7
ORE
MD0
D6
P
⎯
6
6
6
6
6
DRCL
8 bit
SCR
SSR
FRE
SBL
D5
⎯
⎯
5
5
5
5
5
RDRF
CL
D4
4
4
4
4
⎯
4
⎯
8 7
TDRE
A/D
CS0
D3
3
3
⎯
3
3
3
SIDR (R)/SODR (W)
REC
⎯
D2
⎯
⎯
2
2
2
2
2
SMR
8 bit
SCKE
RXE
RIE
D1
1
1
⎯
1
1
1
TXE
TIE
D0
⎯
⎯
0
0
0
0
0
0
(R/W)
(R/W)
(W)