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CMX608 参数 Datasheet PDF下载

CMX608图片预览
型号: CMX608
PDF下载: 下载PDF文件 查看货源
内容描述: [Integrated Input and Output Channel Filters]
分类和应用:
文件页数/大小: 70 页 / 3411 K
品牌: CMLMICRO [ CML MICROCIRCUITS ]
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RALCWI Vocoder  
CMX608/CMX618/CMX638  
Bit 4 to 7  
These bits specify the duration of the DTMF signalling in terms of Vocoder  
frames,  
FRAME  
COUNT  
which each have a length of 20ms.  
Bit 7  
Bit 6  
Bit 5  
Bit 4  
Frames  
Symbol  
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
OFF  
1
2
3
4
5
6
7
8
OFF  
20ms  
40ms  
60ms  
80ms  
100ms  
120ms  
140ms  
160ms  
180ms  
200ms  
220ms  
240ms  
260ms  
280ms  
Continuous  
9
10  
11  
12  
13  
14  
ON  
POWERSAVE register address $09  
7
0
6
0
5
0
4
3
2
1
0
THROTTLE  
ADCON  
DACON  
CODEC  
BIAS  
This write-only register controls the powersaving features of the device. All the bits in this register  
are cleared to '0' after a power up reset. Before vocoding analogue signals, the BIAS and CODEC  
functions must be turned on. If the device is being used only as a repeater with no monitoring,  
then the CODEC and BIAS functions may be switched off.  
Bit 0  
BIAS  
Setting this bit to '1' will turn on the analogue bias. The host should wait for  
approximately 100ms to allow the bias capacitors to charge.  
Clearing this bit to '0' will turn off the analogue bias.  
Bit 1  
CODEC  
Setting this bit to '1' will turn on the CODEC master clock and set it up for use with  
the vocoding function.  
Clearing this bit to '0' will turn off the master clock of the CODEC.  
Bit 2  
DACON  
Setting this bit to '1' will prevent the DAC from being power-saved when the  
device is not decoding.  
Clearing this bit to '0' will cause DAC to be power-saved whenever the device is  
not decoding.  
Bit 3  
ADCON  
Setting this bit to '1' will prevent the ADC from being power-saved when the  
device is not encoding.  
Clearing this bit to '0' will cause the ADC to be power-saved whenever the device  
is not encoding.  
CMX608 Note: Bits 0 to 3 have no effect in the CMX608 and should be cleared to '0'.  
2014 CML Microsystems Plc  
37  
D/608_18_38/11  
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