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Holtek HT98R068 Manual page 25

Two-way radio mcu

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Ex: Operating voltage 3V, setup and enable the maximum modulation of the Sub-audio
path, VR5=default(3FFh):
Sub-audio path modulating flow:
Flow description:
<14082>:The CLI written ID.
<104CB>:Select the register: 04CB
<100FF>:Setup data: 00FFh. VR2 = FFh enables the maximum VR2 level.
<Is reply 14000>:The audio processor writes an acknowledge reply.
Voice Control Function -- VOX
The VOX function is often used in some special applications. From the VOX high level
threshold (CLI CMD-04CD) and low level threshold (CLI CMD-04CE) which are related to
the mic voice volume , the input source can be determined whether it is above the
threshold (I/O CMD-29[1-0]=02h) or below the threshold (I/O CMD-29[1-0]=01h). The
control bit is I/O CMD-2Ch[1].
Audio Control - 2Ch Address
Bit
Name EN_Scram EN_Comp EN_Emp EN_NBW EN_WBW EN_HPF300 EN_VOX EN_AGC
7
6
5
25
HT98R068 Two-way Radio MCU
4
3
2
1
0

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