參數(shù)資料
型號: TLV5604(中文)
廠商: Texas Instruments, Inc.
英文描述: 2.7V TO 5.5V 10-Bit DAC With Serial Power Down(具有掉電功能的2.7V至5.5V,10位串行3微秒四路DAC)
中文描述: 2.7V至5.5V 10位DAC,具有串行斷電(具有掉電功能的為2.7V至5.5V之間,10位串行3微秒四路援會)
文件頁數(shù): 15/22頁
文件大?。?/td> 507K
代理商: TLV5604(中文)
==1999-3-15==
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;
; Interrupt Service Routines
;
int1
ret
; do nothing and return
int23
ret
; do nothing and return
timer_isr:
in
iosr_stat, IOSR ; store IOSR value into variable space
lacl
iosr_stat
; load acc with iosr status
and
#0FFFDh
; reset IO1 LDAC low
sacl
temp
;
out
temp, IOSR ;
or
sacl
out
and
sacl
out
lacl
add
sacl
add
sacl
add
sacl
add
sacl
mar
#0002h
temp
temp, IOSR
#0FFFEh
temp
temp, IOSR
r_ptr
#sinevals
DACa_ptr
#08h
DACc_ptr
#08h
DACb_ptr
#08h
DACd_ptr
*,ar0
; set IO1 LDAC high
;
;
; reset IO0 CS low
;
;
; load rolling pointer to accumulator
; add pointer to table start
; to get a pointer for next DAC a sample
; add 8 to get to DAC C pointer
; add 8 to get to DAC B pointer
; add 8 to get to DAC D pointer
; set ar0 as current AR
; DAC A
lar
lacl
or
sacl
out
ar0, DACa_ptr ; ar0 points to DAC a sample
*
; get DAC a sample into accumulator
#DACa_control ; OR in DAC A control bits
temp
;
temp, SDTR
; send data
;
; We must wait for transmission to complete before writing next word to the SDTR.
; TLV5604 interface does not allow the use of burst mode with the full packet rate, as
; we need a CLKX ve edge to clock in last bit before FS goes high again, to allow SPI
; compatibility.
;
rpt
#016h
; wait long enough for this configuration
nop
; of MCLK/CLKOUT1 rate
; DAC B
lar
lacl
or
sacl
out
rpt
nop
ar0, DACb_ptr ; ar0 points to DAC a sample
*
; get DAC a sample into accumulator
#DACb_control ; OR in DAC B control bits
temp
;
temp, SDTR
; send data
#016h
; wait long enough for this configuration
; of MCLK/CLKOUT1 rate
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