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47N350 参数 Datasheet PDF下载

47N350图片预览
型号: 47N350
PDF下载: 下载PDF文件 查看货源
内容描述: LEGACY免费的键盘嵌入式控制器, SPI和LPC接口对接 [LEGACY FREE KEYBOARD EMBEDDED CONTROLLER WITH SPI AND LPC DOCKING INTERFACE]
分类和应用: 控制器PC
文件页数/大小: 346 页 / 4406 K
品牌: SMSC [ SMSC CORPORATION ]
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Legacy-Free Keyboard/Embedded Controller with SPI and LPC Docking Interface  
Table 16.3 LPC47N350 - SPI Registers  
DESCRIPTION  
REGISTER  
SPICR  
SPISR  
SPIDR  
SPICC  
SPIBR  
SPI Control Register  
SPI Status Register  
SPI Data Register  
SPI Clock Control Register  
SPI Baud Rate Register  
16.7.1 SPICR - SPI Control Register  
Table 16.4 SPI Control Register (SPICR)  
N/A  
HOST ADDRESS  
8051 ADDRESS  
POWER  
BBh  
VCC1  
00h on VCC1 POR  
and when MISC10 bit  
changes  
DEFAULT  
BIT  
D7  
D6  
D5  
D4  
D3  
D2  
D1  
D0  
-
-
-
-
-
-
-
-
HOST TYPE  
8051 R/W  
BIT NAME  
R
R
R
R
R
R/W  
R/W  
R/W  
Reserved  
BIOEN  
SPIMODE LSBF  
16.7.1.1 D0 - LSBF - Least Significant Bit First  
When LSBF is deasserted '0', the 8-bit value from the SPI data register is transferred across the SPI  
interface in MSB-first order. When LSBF is asserted '1', the data is transferred in LSB-first order.  
16.7.1.2 D1 - SPIMODE - SPI Mode  
This bit configures the interface for Bidirectional or Full Duplex mode. When SPIMODE is deasserted  
'0', the interface will operate in Full Duplex mode (See Section 16.5.1, "Full Duplex Mode"). When  
SPIMODE is asserted '1', the interface will operate in Bidirectional mode (See Section 16.5.2,  
"Bidirectional Mode").  
16.7.1.3 D2 - BIOEN - Bidirectional Mode Output Enable  
When the SPI is configured for Bidirectional Mode (see Section 16.7.1.2, "D1 - SPIMODE - SPI Mode"),  
the BIOEN bit controls access to SDOUT. When BIOEN is deasserted '0', the SDOUT signal is  
configured as the serial data input. When BIOEN is asserted '1', the SDOUT signal is configured as the  
serial data output. See Figure 16.1 for details.  
Revision 1.1 (01-14-03)  
180  
SMSC LPC47N350  
DATASHEET