參數(shù)資料
型號(hào)： 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(huì)）
文件頁(yè)數(shù)： 12/22頁(yè)
文件大小： 507K
代理商： TLV5604(中文)
==1999-3-15==
P&S
oo á|′μ×ó1é· YóDT1
==22-11==
;
;
; Processor: TMS320C203 runnning at 40 MHz;
; Description:
;
; This program generates a differential in-phase (sine) on (OUTA OUTB) and it's
; quadrature (cosine) as a differential signal on (OUTC OUTD).
;
; The DAC codes for the signal samples are stored as a table of 64 12 bit values,
; describing 2 periods of a sine function. A rolling pointer is used to address the
; table location in the first period of this waveform, from which the DAC A samples are
; read. The samples for the other 3 DACs are read at an offset to this rolling pointer:
Function
Offset from rolling pointer;
; A
sine
0
; B
inverse sine 16
; C
cosine
8
; D
inverse cosine 24
;
; The on-chip timer is used to generate interrupts at a fixed rate. The interrupt
; values which were written to them in the previous interrupt. Then all 4 DAC values are
; fetched and written out through the synchronous serial interface. Finally, the
; rolling pointer is incremented to address the next sample, ready for the next
; interrupt.
;
; 1998, Texas Instruments Incorporated
;
;
.include regs.asm
; jump vectors
.ps
0h
b
start
b
int1
b
int23
timer_isr
; b
temp
.equ
0060h
r_ptr
.equ
0061
iosr_stat
.equ
0062h
DACa_ptr
.equ
0063h
DACb_ptr
.equ
0064h
DACc_ptr
.equ
0065h
P &S
oo á|′μ×ó1é· YóDT1
μ :
ot±±ooêD×μèa· 15o
P&Sí í :
http://www.p8s.com
D :
ooêD70020D
óê±à:
430079
μ°:
( 86) ( 027￡87493500 87493506
′
( 86) ( 027) 87491166, 87493497
; constants
; DAC control bits to be OR'ed onto data
; all fast mode
DACa_control
.equ
01000h
DACc_control
.equ
09000h
DACd_control
.equ
0d000h
; tables
.ds
02000h
sinevals
.word
00800h
.word
00AE9h
.word
00C3Ah
.word
00D61h
.word
00E53h
.word
00F07h
.word
00F76h
.word
00F9Ch
.word
00F07h
.word
00E53h
.word
00D61h
.word
00C3Ah
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------
"
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TLV5604CD 制造商:Texas Instruments 功能描述:IC's
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