参数资料
型号: MAS3587F
厂商: Electronic Theatre Controls, Inc.
元件分类: 通用总线功能
英文描述: MPEG Layer 3 Audio Encoder/Decoder
中文描述: MPEG层3音频编码器/解码器
文件页数: 23/83页
文件大小: 734K
代理商: MAS3587F
ADVANCE INFORMATION
MAS 3587F
Micronas
23
77
DCFR Register
(reset = 00
hex
)
DCFR
Battery Voltage Monitor
bit[15]
Comparison result (readback)
1
input voltage at pin VBAT above defined threshold
0
input voltage at pin VBAT below defined threshold
bit[14]
Number of battery cells
0
1
1 cell (range 0.8...1.5 V) (reset)
2 cells (range 1.6...3.0 V)
bit[13:10]
Voltage threshold level
1 cell 2 cells
1.5
1.45
1111
1110
...
0010
0001
0000
3.0 V
2.9 V
0.85
0.8
Battery voltage supervision off (reset)
1.7 V
1.6 V
bit[9:8]
Reserved, must be set to 0
The result is stable after 1 ms after enabling. The setup time for switching
between two thresholds is negligibly small.
For power management reasons, the battery voltage monitor should be
switched off by setting bit[13:10] to zero when the measurement is completed.
DC/DC Converter Frequency Control (PWM)
bit[7:4]
Reserved, must be set to 0
bit[3:0]
Frequency of DC/DC converter
Reference: 24.576 22.5792 18.432 MHz
0111
315.1
0110
323.4
0101
332.1
0100
341.3
0011
351.1
0010
361.4
0001
372.4
0000
384.0
1111
396.4
1110
409.6
1101
423.7
1100
438.9
1011
455.1
1010
472.6
1001
491.5
1000
512.0
If the audio codec is not enabled (bit 11 of the Control register at I
2
C-subad-
dress 6A
hex
is zero), the clock for the DC/DC converters is directly derived
from the crystal frequency (nominal 18.432 MHz). Otherwise, the synthesizer
clock is used as the reference (please refer to the respective column in
Table 2
1 on page 10).
289.5
297.1
305.1
313.6
322.6
332.0
342.1
352.8
364.2
376.3
389.3
403.2
418.1
434.2
451.6
470.4
297.3 kHz
307.2 kHz
317.8 kHz
329.1 kHz
341.3 kHz
354.5 kHz
368.6 kHz
384.0 kHz (reset)
400.7 kHz
418.9 kHz
438.9 kHz
460.8 kHz
485.1 kHz
512.0 kHz
542.1 kHz
576.0 kHz
Table 3
3:
Direct Configuration Registers
I
2
C Sub-
address
(hex)
Function
Name
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