the label RINT. This code stores" />
參數(shù)資料
型號: LTC1198-2ACS8
廠商: Linear Technology
文件頁數(shù): 19/28頁
文件大?。?/td> 0K
描述: IC ADC 8BIT 750KHZ SAMPL 8-SOIC
標準包裝: 100
位數(shù): 8
采樣率(每秒): 750k
數(shù)據(jù)接口: 串行
轉換器數(shù)目: 1
功率耗散(最大): 50mW
電壓電源: 單電源
工作溫度: 0°C ~ 70°C
安裝類型: 表面貼裝
封裝/外殼: 8-SOIC(0.154",3.90mm 寬)
供應商設備封裝: 8-SOIC
包裝: 管件
輸入數(shù)目和類型: 1 個單端,單極
LTC1196/LTC1198
26
119698fb
TYPICAL APPLICATIONS
Once RINT is generated the code begins execution at
the label RINT. This code stores the DOUT word from the
LTC1198 in the ACC and then stores it in location 200
hex. The data appears in location 200 hex right-justied
as shown in Figure 19. The code is set up to continually
loop, so at this point the code jumps to label TXRX and
repeats from here.
L1196/98 F19
MSB
LSB
X
7
6
5
4
3
2
1
0
DOUT FROM LTC1198 STORED IN TMS320C25 RAM
> 200
Figure 19. Memory Map for the Circuit in Figure 15
LABEL
MNEMONIC
COMMENTS
AORG
B
0
INIT
ON RESET CODE EXECUTION STARTS AT 0
BRANCH TO INITIALIZATION ROUTINE
AORG
B
>26
RINT
ADDRESS TO RINT INTERRUPT VECTOR
BRANCH TO RINT SERVICE ROUTINE
INIT
AORG
DINT
LDPK
LARP
LRLK
LACK
SACL
STXM
FORT
>32
>0
>1
AR1, >200
>10
>4
0
MAIN PROGRAM STARTS HERE
DISABLE INTERRUPTS
SET DATA MEMORY PAGE POINTER TO 0
SET AUXILIARY REGISTER POINTER TO 1
SET AUXILIARY REGISTER 1 TO >200
LOAD IMR CONFIG WORD INTO ACC
STORE IMR CONFIG WORD INTO IMR
CONFIGURE FSX AS AN OUTPUT
SET SERIAL PORT TO 16-BIT MODE
TXRX
LACK
SFSM
RPTK
SFL
SACL
EINT
>44
7
>1
LOAD LTC1198 DIN WORD INTO ACC
FSX PULSES GENERATED ON XSR LOAD
REPEAT NEXT INSTRUCTION 8 TIMES
SHIFTS DIN WORD TO RIGHT POSITION
PUT DIN WORD IN TRANSMIT REGISTER
ENABLE INTERRUPT (DISABLE ON RINT)
RPTK
NOP
2
MINIMIZE THE CONVERSION CYCLE TIME
TO BE 20 CLOCK CYCLES
RINT
ZALS
SACL
B
END
>0
*, 0
TXRX
STORE LTC1198 DOUT WORD IN ACC
STORE ACC IN LOCATION >200
BRANCH TO TRANSMIT RECEIVE ROUTINE
Figure 20. TMS320C25 Code for the Circuit in Figure 15
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