參數(shù)資料
型號： TLE7824G
廠商： INFINEON TECHNOLOGIES AG
元件分類： 模擬信號調(diào)理
英文描述： SPECIALTY ANALOG CIRCUIT, PDSO28
封裝： GREEN, PLASTIC,SOP-28
文件頁數(shù)： 13/53頁
文件大?。?/td> 900K
代理商： TLE7824G
TLE7824G
SPI (Serial Peripheral Interface)
Data Sheet
20
Rev. 3.01, 2008-04-15
8
SPI (Serial Peripheral Interface)
Control and status information between SBC and
μC is exchanged via a digital interface, that is called “serial
peripheral interface” (SPI) on the SBC side, and “synchronous serial channel” (SSC) on the
μC side. The 16-bit
wide Programming or Input Word of the SBC (see Table 2 to Table 8) is read in via the data input DI (with “LSB
first”), which is synchronized with the clock input CLK supplied by the
μC. The Diagnosis or Output Word appears
synchronously at the data output DO (see Table 9).
The transmission cycle begins when the chip is selected by the Chip Select Not input CSN (“l(fā)ow” active). After the
CSN input returns from L to H, the word that has been read in becomes the new control word. The DO output
switches to tri-state status at this point, thereby releasing the DO bus for other usage.
The state of DI is shifted into the input register with every falling edge on CLK. The state of DO is shifted out of
the output register after every rising edge on CLK. The number of received input clocks is supervised by a modulo-
16 operation and the Input/Control Word is discarded in case of a mismatch.
This error is flagged by a “high” at the data output pin DO (interconnect to
μC: P1.4) of the following SPI output
word before the first rising edge of the clock is received. Additionally the logic level of DO will be “OR-ed” with the
logic level of DI (P1.3).
Note: After wake-up from low-power modes the device needs to be set to Active Mode first before switches like
LS1, LS2, Supply Output and LED Driver can be turned on with the second SPI command.
Figure 10
16-Bit SPI Input Data / Control Word
15 14 13 12 11 10
8
9
7
6
5
4
3
2
0
1
Mode Selection
Bits
Configuration
Select
Configuration Registers
Supply
Output
On/Off
WD
On/Off
Input
Data
Active
LIN Sleep
Sleep
Reserved
000
001
010
011
100
101
00
10
Reset
Thres*
Reset
Delay*
Window Watchdog Timing
Bit Position: 10 .. 5
MON2
On/Off*
MON3
On/Off*
MON4
On/Off*
110
111
11
01
LIN
10.4k*
MON1
On/Off*
ADC
Vbat/
Vtemp*
Reserved
(Watchdog Trigger Register )
LS1
On/Off
LS2
On/Off
MON5
On/Off*
not valid
Meas.
I/F
On/Off
Cyclic Wake Timing*
Bit Position: 9 .. 5
HS-LED
OV/UV
disable
HS-LED
On /Off
0**
not valid
LIN RxD Only
Stop
LSB
MSB
MS0
MS1
MS2
CS0
CS1
Reserved
* remains unchanged after Vcc-UV or WD-RESET
** if bit set to 1" command will be ignored
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