参数资料
型号: PCM1606E
英文描述: 24-BIT, 192-kHz SAMPLING, 6-CHANNEL, ENHANCED MULTILEVEL, DELTA-SIGMA DIGITAL-TO-ANALOG CONVERTER
中文描述: 24位192 kHz的采样,6通道,加强多层次,Δ-Σ数字到模拟转换器
文件页数: 24/27页
文件大小: 385K
代理商: PCM1606E
PCM1606
SLES014B – OCTOBER 2001 – REVISED AUGUST 2002
6
www.ti.com
timing requirements (continued)
power-on reset functions
The PCM1606 includes a power-on reset function. Figure 2 shows the operation of this function. With the
system clock active and VCC > 3 V typical (2.2 V to 3.7 V), the power-on reset function is enabled. The
initialization sequence requires 1024 system clocks from the time VCC > 3 V. After the initialization period, the
PCM1606 is set to its reset default state.
Table 1. System Clock Rates for Common Audio Sampling Frequencies
SAMPLING FREQUENCY
SYSTEM CLOCK FREQUENCY (fSCLK) (MHz)
SAMPLING FREQUENCY
128 fS
192 fS
256 fS
384 fS
512 fS
768 fS
8 kHz
2.048
3.072
4.096
6.144
16 kHz
4.096
6.144
8.192
12.288
32 kHz
8.192
12.288
16.384
24.576
44.1 kHz
11.2896
16.9344
22.5792
33.8688
48 kHz
12.288
18.432
24.576
36.864
96 kHz
24.576
36.864
49.152
See Note 5
192 kHz
24.576
36.864
See Note 6
NOTES:
5. The 768-fS system clock rate is not supported for fS > 64 kHz.
6. This system clock is not supported for the given sampling frequency.
t(SCKH)
System Clock
Pulse Cycle Time
System Clock
t(SCKL)
2.0 V
0.8 V
1/128 fS, 1/256 fS, 1/384 fS, 1/512 fS and 1/768 fS.
PARAMETERS
MIN
MAX
UNIT
t(SCKH)
System clock pulse duration HIGH
10
ns
t(SCKL)
System clock pulse duration LOW
10
ns
Figure 1. System Clock Timing
1024 System Clocks
System Clock
Internal Reset
3.7 V
3.0 V
2.2 V
VDD
0 V
Don’t Care
Reset
Reset Removal
Figure 2. Power-On Reset Timing
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