参数资料
型号: CC-ACC-ADD-2443
厂商: Digi International
文件页数: 33/148页
文件大小: 0K
描述: BRD AUDIO ADD-0N CC 2443 KIT
标准包装: 1
Chapter 1
Where UBRDIVn is integer part of DIV_VAL - and UDIVSLOTn the floating point part of
DIV_VAL.
For example, if the baud rate is 115200 bps and SRCCLK is 66 MHz, UBRDIVn and
UDIVSLOTn are:
DIV_VAL = (66000000 / (115200 x 16)) -1
= 35.8 -1
= 34.8
* UBRDIVn = 34
(num of 1's in UDIVSLOTn)/16 = 0.8
(num of 1's in UDIVSLOTn) = 12.8=>13
The table below shows the recommended value table of UDIVSLOTn register.
Num of 1 ’s
0
1
2
3
4
5
6
7
UDIVSLOTn
0x0000(0000_0000_0000_0000b)
0x0080(0000_0000_0000_1000b)
0x0808(0000_1000_0000_1000b)
0x0888(0000_1000_1000_1000b)
0x2222(0010_0010_0010_0010b)
0x4924(0100_1001_0010_0100b)
0x4A52(0100_1010_0101_0010b)
0x54AA(0101_0100_1010_1010b)
Num of 1 ’s
8
9
10
11
12
13
14
15
UDIVSLOTn
0x5555(0101_0101_0101_0101b)
0xD555(1101_0101_0101_0101b)
0xD5D5(1101_0101_1101_0101b)
0xDDD5(1101_1101_1101_0101b)
0xDDDD(1101_1101_1101_1101b)
0xDFDD(1101_1111_1101_1101b)
0xDFDF(1101_1111_1101_1111b)
0xFFDF(1111_1111_1100_1111b)
As a result, DIV_VAL = 34.8125 = 34+13x(1/16)
The baud rate is finally:
66000000/(34.8125+1)/16 = 115167.2 baud
SPI interface
The S3C2443 provides two SPI-interfaces, each of which have two 8-bit shift registers
for transmission and receiving, respectively. During an SPI transfer, data is
simultaneously transmitted (shifted out serially) and received (shifted in serially).
Four I/O pin signals are associated with SPI transfers: SCK (SPICLK0,1), MISO
(SPIMISO0,1) data line, MOSI (SPIMOSI0,1) data line, and the active low /SS (nSS0,1)
pin.
Both 4-pin SPI interfaces are provided at the system connector (Clock, Chip-Select,
Data-In and Data-Out). SPI0 interface is located at the general pins of the system
connector, while SPI1 interface shares its pins with interrupt functions at the specific
pins of the system connector.
33
ConnectCore 9M 2443 & Wi-9M 2443 Hardware Reference
相关PDF资料
PDF描述
CC-EVB-FAX KIT EVAL WORLD MODEM II FAX
CC-USB-SR ADAPTER USB TO SOCKET INTRFC
CC-USB232-C10 ADAPTER USB TO RS-232 CABLE
CDB150X-01-Z DEVELOPMENT BOARD FOR CS1501
CDB1601-120W-Z DEVELOPMENT BOARD FOR CS1601
相关代理商/技术参数
参数描述
CC-ACC-DB9C 制造商:Digi International Inc 功能描述:JUMPSTART KIT BASEBOARD AND POWER SUPPLY FOR DIGI CONNECTCOR - Boxed Product (Development Kits) 制造商:Digi International Inc 功能描述:KIT JUMPSTART FOR WI-9C/9C
CC-ACC-DB9P 制造商:Digi International 功能描述:JUMPSTART KIT BASEBOARD AND POWER SUPPLY FOR DIGI CONNECTCOR - Boxed Product (Development Kits) 制造商:Digi International Inc 功能描述:KIT JUMPSTART FOR 9P 制造商:Digi International Inc 功能描述:Jumpstart Kit BseBrd and Power Supply
CC-ACC-DB9P-9215 制造商:Digi International 功能描述:JUMPSTART KIT BASEBOARD AND POWER SUPPLY FOR DIGI CONNECTCOR - Boxed Product (Development Kits) 制造商:Digi International Inc 功能描述:KIT JUMPSTART FOR 9P 9215 制造商:Digi International Inc 功能描述:Jumpstart Kit BseBrd and Power Supply
CC-ACC-DBMX51 制造商:Digi International Inc 功能描述:BOARD DEV CONNECTCORE I.MX51 制造商:Digi International Inc 功能描述:JumpStart Kit Baseboard and Power Supply for ConnectCore Wi-i.MX51 w/o Module
CC-ACC-DBMX-51 制造商:Digi International Inc 功能描述:JUMPSTART KIT BASEBOARD AND POWER SUPPLY FOR DIGI CONNECTCOR - Boxed Product (Development Kits) 制造商:Digi International Inc 功能描述:KIT JUMPSTART FOR WI-I.MX51