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UART
ABOV Semiconductor
REGISTERS
9.3
The base Address of UART is 0x4000_8000 and register map is described in Table9.2 and 9.3.
Table 9.2. Base address of each port
NAME
BASE ADDRESS
U0
0x4000_8000
U1
0x4000_8100
Table9.3. UART Register Map
NAME
OFFSET
TYPE
DESCRIPTION
RESET VALUE
Un.RBR
0x00
R
Receive data buffer register
0x00
Un.THR
0x00
W
Transmit data hold register
0x00
Un.IER
0x04
RW
Interrupt enable register
0x00
Un.IIR
0x08
R
Interrupt ID register
0x01
-
0x08
-
reserved
-
Un.LCR
0x0C
RW
Line control register
0x00
Un.DCR
0x10
RW
Data Control Register
Un.LSR
0x14
R
Line status register
0x00
-
0x18
-
reserved
-
Un.SCR
0x1C
RW
Scratch pad register
0x00
Un.BDR
0x20
RW
Baud rate Divisor Latch Register
0x0000
Un.BFR
0x24
RW
Baud rate Fractional Counter Value
0x00
Un.IDTR
0x30
RW
Inter-frame Delay Time Register
0x00
Un.RBR
Receive Buffer Register
9.3.1
UART Receive Buffer Register is 8-bit Read-Only register. Received data will be read out from this register. Maximum
length of data is 8 bits. Last data received will be maintained in this register until a new byte is received.
U0.RBR=0x4000_8000, U1.RBR=0x4000_8100
7
6
5
4
3
2
1
0
RBR[7:0]
-
RO
7
0
RBR
Receive Buffer Register
Summary of Contents for AC30M1x32
Page 3: ...3 246 ABOV Semiconductor INTRODUCTION SECTION 1 INTRODUCTION ...
Page 4: ...4 246 4 246 AC30M1x64 1x32 ABOV Semiconductor OVERVIEW CHAPTER 1 ...
Page 18: ...18 246 18 246 ABOV Semiconductor AC30M1x64 1x32 CPU CHAPTER 2 ...
Page 22: ...22 246 22 246 ABOV Semiconductor AC30M1x64 1x32 Boot Mode CHAPTER 3 ...
Page 26: ...26 246 26 246 ABOV Semiconductor AC30M1x64 1x32 SECTION 2 PERIPHERALS ...
Page 27: ...27 246 ABOV Semiconductor System Control Unit SCU SYSTEM CONTROL UNIT SCU CHAPTER 1 ...
Page 69: ...69 246 ABOV Semiconductor Port Control Unit PCU PORT CONTROL UNIT PCU CHAPTER 2 ...
Page 85: ...85 246 ABOV Semiconductor General Purpose I O GPIO GENERAL PURPOSE I O GPIO CHAPTER 3 ...
Page 92: ...92 246 92 246 AC30M1x64 1x32 ABOV Semiconductor FLASH MEMORY CONTROLLER CHAPTER 4 ...
Page 105: ...105 246 ABOV Semiconductor Internal SRAM INTERNAL SRAM CHAPTER 5 ...
Page 107: ...107 246 ABOV Semiconductor Watch Dog Timer WATCH DOG TIMER WDT CHAPTER 6 ...
Page 113: ...113 246 ABOV Semiconductor 16 bit Timer 16 BIT TIMER CHAPTER 7 ...
Page 129: ...129 246 ABOV Semiconductor FRT FREE RUN TIMER FRT CHAPTER 8 ...
Page 134: ...134 246 134 246 ABOV Semiconductor AC30M1x64 1x32 FUNCTION DESCRIPTION 8 3 ...
Page 135: ...135 246 UART ABOV Semiconductor UNIVERSAL ASYNCHRONOUS CHAPTER 9 RECEIVER TRANSMITTER UART ...
Page 151: ...151 246 ABOV Semiconductor UART Figure 9 6 Transmit interrupt timing diagram ...
Page 152: ...152 246 152 246 ABOV Semiconductor AC30M1x64 1x32 SERIAL PERIPHERAL INTERFACE SPI CHAPTER 10 ...
Page 164: ...164 246 164 246 ABOV Semiconductor AC30M1x64 1x32 I2 C Interface CHAPTER 11 ...
Page 185: ...185 246 ABOV Semiconductor Motor PWM MOTOR PULSE WIDTH MODULATOR CHAPTER 12 MPWM ...
Page 215: ...215 246 ABOV Semiconductor Divider DIVIDER DIV64 CHAPTER 13 ...
Page 221: ...221 246 ABOV Semiconductor 12 BIT A D Converter 12BIT A D CONVERTER CHAPTER 14 ...
Page 235: ...235 246 ABOV Semiconductor CHARACTERISTIC SECTION 3 CHARACTERISTIC ...
Page 236: ...236 246 236 246 ABOV Semiconductor AC30M1x64 1x32 Electrical Characteristic CHAPTER 1 ...
Page 243: ...243 246 ABOV Semiconductor Package Package CHAPTER 2 ...