參數(shù)資料
型號: R8820LV
廠商: Electronic Theatre Controls, Inc.
英文描述: 16-BIT RISC MICROCONTROLLER
中文描述: 16位RISC微控制器
文件頁數(shù): 75/98頁
文件大小: 1000K
代理商: R8820LV
R DC
RISC DSP Controller
R8820LV
RDC Semiconductor Co.
Rev:1.0
Subject to change without notice
75
Bit 7-0
: TDATA, Transmit Data. Software writes this register with data to be transmitted on the serial port 0.
Bit 15-8
: Reserved
Bit 7-0: RDATA
, Received DATA. The RDR bit should be read as 1 before read the RDATA register to avoid reading
invalid data.
Bit 15-0: BAUDDIV
, Baud Rate Divisor.
The general formula for baud rate divisor is
Baud Rate = Microprocessor Clock / (16 x BAUDIV)
For example, The Microprocessor clock is 22.1184MHz and the BBDIV=5 (Decimal), the baud rate of serial port is
115.2k.
These bits definition are same as the bits definition of Register 80h
These bits definition are same as the bits definition of Register 82h
Serial Port 0 Receive Register
Offset : 86h
Reset Value :
2
3
0
1
4
5
6
7
8
9
10
11
12
13
14
15
RDATA
Reserved
Serial Port 0 Baud Rate Divisor Register
Offset : 88h
Reset Value : 0000h
2
3
0
1
4
5
6
7
8
9
10
11
12
13
14
15
BAVDDIV
Serial Port 1 Contrl Register
Offset : 10h
Reset Value : 0000h
2
3
0
1
4
5
6
7
8
9
10
11
12
13
14
15
DMA
RISE
BRK
TB8
FC
TXIE
RXIE
T
R
EVN
PE
MODE
Serial Port 1 Status Register
Offset : 12h
Reset Value :
2
3
0
1
4
5
6
7
8
9
10
11
12
13
14
15
BRK1
TEMT
HS0
Res
Reserved
BRK0
RB8
RDR THRE FER
OER
PER
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