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PCM3003E/2K bảng dữ liệu(PDF) 23 Page - Burr-Brown (TI)

[Old version datasheet] Texas Instruments acquired Burr-Brown Corporation. Click here to check the latest version.
tên linh kiện PCM3003E/2K
Giải thích chi tiết về linh kiện  16/20-BIT SINGLE-ENDED ANALOG INPUT/OUTPUT STEREO AUDIO CODECS
PDF  39 Pages
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nhà sản xuất  BURR-BROWN [Burr-Brown (TI)]
Trang chủ  http://www.burr-brown.com
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PCM3003E/2K bảng dữ liệu(HTML) 23 Page - Burr-Brown (TI)

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t(SCKH)
SYSCLK
0.3 VDD
0.7 VDD
t(SCKL)
1/256 fS,
1/384 fS,
or 1/512 fS
H
L
T0005-05
POWER-ON RESET
1024 System Clock Periods
Reset
Reset Removal
2.4 V
2.2 V
2.0 V
VDD
Internal Reset
System Clock
T0014-03
3 Clocks Minimum
PCM3002
PCM3003
SBAS079A – OCTOBER 2000 – REVISED OCTOBER 2004
Figure 44. System Clock Timing
System clock pulse duration, HIGH
t(SCKH)
12 ns (min)
System clock pulse duration, LOW
t(SCKL)
12 ns (min)
Both the PCM3002 and PCM3003 have internal power-on reset circuitry. Power-on reset occurs when the
system clock (SYSCLK) is active and VDD > 2.2 V. For the PCM3003, the SYSCLK must complete a minimum of
three complete cycles prior to VDD > 2.2 V to ensure proper reset operation. The initialization sequence requires
1024 SYSCLK cycles for completion, as shown in Figure 45. Figure 46 shows the state of the DAC and ADC
outputs during and after the reset sequence.
Figure 45. Internal Power-On Reset Timing
23



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