參數(shù)資料
型號: A42MX16-1CQ100I
廠商: Electronic Theatre Controls, Inc.
英文描述: IC LI-ION BATT CHARGER 10-MLP
中文描述: 40MX和42MX FPGA系列
文件頁數(shù): 21/120頁
文件大小: 854K
代理商: A42MX16-1CQ100I
117
4958B–AUTO–11/10
Atmel ATA6285/ATA6286 [Preliminary]
3.14.1.5
SPI Data Register – SPDR
The SPI Data Register is a read/write register used for data transfer between the Register File
and the SPI Shift Register. Writing to the register initiates data transmission. Reading the regis-
ter causes the Shift Register Receive buffer to be read.
3.14.2
Data Modes
There are four combinations of SCK phase and polarity with respect to serial data, which are
determined by control bits CPHA and CPOL. The SPI data transfer formats are shown in Figure
3-54 and Figure 3-55 on page 118. Data bits are shifted out and latched in on opposite edges of
the SCK signal, ensuring sufficient time for data signals to stabilize. This is clearly seen by sum-
Figure 3-54. SPI Transfer Format with CPHA = 0
Bit
765
432
10
SPDR[7..0]
SPDR
Read/Write
R/W
Initial Value
X
XXX
X
Undefined
Table 3-50.
CPOL/CHPA Functionality
Leading Edge
Trailing Edge
SPI Mode
CPOL = 0, CPHA = 0
Sample(Rising)
Setup(Falling)
0
CPOL = 0, CPHA = 1
Setup(Rising)
Sample(Falling)
1
CPOL = 1, CPHA = 0
Sample(Falling)
Setup(Rising)
2
CPOL = 1, CPHA = 1
Setup(Falling)
Sample(Rising)
3
LSB
MSB
Bit 1
Bit 6
Bit 2
Bit 5
Bit 3
Bit 4
Bit 3
Bit 5
Bit 2
Bit 6
Bit 1
MSB
LSB
MSB first (DORD = 0)
LSB first (DORD =1)
SCK (CPOL = 0)
mode 0
SCK (CPOL = 1)
mode 2
SS
SAMPLE -
MOSI/MISO
MISO - PIN
MOSI - PIN
相關(guān)PDF資料
PDF描述
A42MX16-1CQ100M IC I2C PROG PENTA ULDO 20-MLP
A42MX16-1PL100 40MX and 42MX FPGA Families
A42MX16-1PL100A IC TVS BI-DIR 5V 350W SOD-323
A42MX16-1PL100B 40MX and 42MX FPGA Families
A42MX16-1PL100ES 40MX and 42MX FPGA Families
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
A42MX16-1CQ100M 制造商:ACTEL 制造商全稱:Actel Corporation 功能描述:40MX and 42MX FPGA Families
A42MX16-1PL100 制造商:ACTEL 制造商全稱:Actel Corporation 功能描述:40MX and 42MX FPGA Families
A42MX16-1PL100A 制造商:未知廠家 制造商全稱:未知廠家 功能描述:40MX and 42MX FPGA Families
A42MX16-1PL100B 制造商:未知廠家 制造商全稱:未知廠家 功能描述:40MX and 42MX FPGA Families
A42MX16-1PL100ES 制造商:ACTEL 制造商全稱:Actel Corporation 功能描述:40MX and 42MX FPGA Families