参数资料
型号: TAS3202PAG
厂商: TEXAS INSTRUMENTS INC
元件分类: 消费家电
英文描述: SPECIALTY CONSUMER CIRCUIT, PQFP64
封装: GREEN, PLASTIC, TQFP-64
文件页数: 35/66页
文件大小: 817K
代理商: TAS3202PAG
XTALI
MCLKO
MCLKI
tw(MCLKI)
tf(MCLKO)
tc(1)
tc(2)
tc(3)
tw(MCLKO)
tr(MCLKO)
td(MI-MO)
T0088-01
SLES208B – JUNE 2009 – REVISED MARCH 2011
www.ti.com
8.6
Timing Characteristics
The following sections describe the timing characteristics of the TAS3202.
8.7
Master Clock
over recommended operating conditions (unless otherwise noted)
TEST
PARAMETER
MIN
TYP
MAX
UNIT
CONDITIONS
f(XTAL_IN)
Frequency, XTAL_IN (1/ tc(1))
See (1)
512Fs
Hz
tc(1)
Cycle time, XTAL_IN
1÷512Fs
Sec
f(MCLK_IN)
Frequency, MCLK_IN (1/ tc(2))
512Fs
Hz
tw(MCLK_IN)
Pulse duration, MCLK_IN high
See (2)
0.4 tc(2)
0.5 tc(2)
0.6 tc(2)
ns
Crystal frequency deviation
50
ppm
f(MCLKO)
Frequency, MCLKO (1/ tc(3))
256Fs
Hz
tr(MCLKO)
Rise time, MCLKO
CL = 30 pF
15
ns
tf(MCLKO)
Fall time, MCLKO
CL = 30 pF
15
ns
tw(MCLK_IN)
Pulse duration, MCLKO high
See (3)
HMCLKO
ns
XTAL_IN master clock
80
source
MCLKO jitter
ps
MCLK_IN master clock
See (4)
source
MCLKO = MCLK_IN
See (5)
20
Delay time, MCLK_IN rising
td(MI-MO)
ns
edge to MCLKO rising edge
MCLKO < MCLK_IN
See (5) (6)
20
(1)
Duty cycle is 50/50.
(2)
Period of MCLK_IN = TMCLK_IN = 1/fMCLK_IN
(3)
HMCLKO = 1/(2 × MCLKO). MCLKO has the same duty cycle as MCLK_IN when MCLKO = MCLK_IN. When MCLKO = 0.5 MCLK_IN or
0.25 MCLK_IN, the duty cycle of MCLKO is typically 50%.
(4)
When MCLKO is derived from MCLK_IN, MCLKO jitter = MCLK_IN jitter
(5)
Only applies when MCLK_IN is selected as master source clock
(6)
Also applies to MCLKO falling edge when MCLKO = MCLK_IN/2 or MCLK_IN/4
Figure 8-3. Master Clock Signal Timing Waveforms
40
Electrical Specifications
Copyright 2009–2011, Texas Instruments Incorporated
Product Folder Link(s): TAS3202
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