參數(shù)資料
型號(hào)： TLV320AIC29IRGZ
廠商： Texas Instruments, Inc.
元件分類： Codec
英文描述： STWREO AUDIO CODEC WITH INTERGRATED HEADPHONE AND SPEAKER AMPLIFIERS
中文描述： STWREO音頻編解碼器集成耳機(jī)和音箱放大器
文件頁(yè)數(shù)： 71/85頁(yè)
文件大小： 1007K
代理商： TLV320AIC29IRGZ
SLAS494A DECEMBER 2005 REVISED JANUARY 2006
www.ti.com
71
CONVERSION TIME CALCULATIONS FOR THE AIC29
Auxiliary Measurement Operation
The time needed to make temperature, auxiliary, or battery measurements is given by:
t
NAVG
NBITS
1
8 MHz
conv
n1
n2
1
tOSC
15
tOSC
n3
tOSC
where:
n
1
= 6 ; if
conv
= 8 MHz
7 ; if
conv
≠
8 MHz
n
2
= 24 ; if measurement is for TEMP1 case
12 ; if measurement is for other than TEMP1 case
400 ns; if measurement is for the external/internal resistance using AUX1/AUX2
n
3
= 0 ; if external reference mode is selected
3 ; if t
REF
= 0
μ
s or reference is programmed for power up all the time.
1 + t
REF
/125 ns; if t
REF
≠
0
μ
s and reference needs to power down between conversions.
t
REF
is the reference power up delay time.
Sample,Conversion &
Averaging for
BAT1 Input
Waiting for Host to
Write into REG00
of PAGE01
REG00 of
PAGE01
Is Updated
for
BAT1 Scan
Mode
Reading
BAT1Data
Register
Waiting for Host to
Write into REG00
of PAGE01
(PAGE01H,REG01H
[D15D14 = 01])
DAV
SS DEACTIVATED
Wait for Reference Power-Up Delay in Case
of Internal Ref Mode if Applicable
The time needed for continuous autoscan mode is given by:
t
NINP
NAVG
NBITS
1
8 MHz
conv
n1
12
1
tOSC
8
tOSC
n2
tOSC
tDEL
n3
tOSC
n4
tOSC
where:
N
INP
= 1; if autoscan is selected for only one input AUX1, AUX2, TEMP1 or TEMP2
= 2; if autoscan is selected for two inputs AUX1AUX2, AUX1TEMP1, AUX1TEMP2 etc
= 3; if autoscan is selected for three inputs AUX1AUX2TEMP1 or AUX1AUX2TEMP2
n
1
= 6 ; if f
conv
= 8 MHz
7 ; if f
conv
p 8 MHz
n
2
= 12 ; if one of the input selected is TEMP1
0 ; if measurement is for other than TEMP1
n
3
= 0 ; if external reference mode is selected or t
DEL
= 0.
3 ; if t
REF
= 0 ms or reference is programmed for power up all the times.
1 + t
REF
/125 ns ; if t
REF
p 0us and reference needs to power down between conversions.
t
REF
is the reference power up delay time.
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