MX803ALH Ver la hoja de datos (PDF) - MX-COM Inc
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MX803ALH Datasheet PDF : 26 Pages
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Audio Signaling Processor
10
MX803A PRELIMINARY INFORMATION
5.2.1 Write to Control Register
A/C 30H, followed by 1 byte of Command Data
Audio Switch:
General Purpose Timer:
Interrupt Enable Instructions:
Band Selection:
Summing Switch:
Interrupt Designation:
Enables or Disables the stand-alone on-chip Audio Switch.
This should be set up before interrupts are enabled since a General Reset command
will set the timer period to 00H - 0ms (permanent interrupt).
Status bits 0, 1 and 2 are produced regardless of the state of these settings.
Bits 2 and 3 set the required frequency range. See Figure 4.
Used to Enable or Disable the switch that controls the MX803A output.
Decoder Interrupts
Notone Timer and RX Tone Measurement
Transmitter Interrupt
G/Purpose Timer Interrupt
Setting
MSB
Bit 7
1
0
Bit 6
1
0
Bit 5
1
0
Bit 4
1
0
Bit 3 Bit 2
0
0
0
1
1
0
1
1
Bit 1
0
Bit 0
0
Control Bits
Transmitted First
Audio switch
Enable
Disable
G/Purpose Timer Interrupt
Enable
Disable
Decoder Interrupts
Enable
Disable
Summing Switch
Enable
Disable
Band Selection
High Band
Mid Band
Extended Band
Do not use this setting
Set to
0
Set to
0
Table 2: Control Register
© 1996 MX•COM, INC.
Tele: 800 638 5577 910 744 5050 Fax: 910 744 5054
Doc. # 20480122.003
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