CMX980AL7 CML Microcircuits, CMX980AL7 Datasheet - Page 43

• Manufacturer Part Number: CMX980AL7
• Description: TETRA Baseband Processor
• Manufacturer: CML Microcircuits

TETRA Baseband Processor
Title:
Address:
Function:
Description:
1999 Consumer Microcircuits Limited
7:2
1:0
7:2
1:0
7:0
7:2
1:0
7:0
Bit
7:0
AuxDacData
AuxDac1LsbData
AuxDac1MsbData
AuxDac2LsbData
AuxDac2MsbData
AuxDac3LsbData
AuxDac3MsbData
Auxiliary DAC Data registers
(Eight registers) $0x18 to $0x1F
RW
There are two input registers for each of the four auxiliary DACs. Writing to the
AuxDac#LsbData register writes the least significant two bits of DAC data. Writing to the
AuxDac#MsbData register writes the most significant eight bits of DAC data and then passes all
ten bits to the appropriate DAC input (only if the RamDacActive bit is set Low for DAC 1). If the
AuxDac#MsbData register is written while the AuxDac#LsbData register is left constant, the
converter may be treated as an 8-bit DAC.
Name
Address $0x18
Address $0x1A
Address $0x1B
Address $0x1C
Address $0x1D
Address $0x19
Data
Data
Data
Data
Data
Data
Active State
RW
RW
RW
RW
RW
RW
RW
RW
RW
Reserved. These bits should be set Low. Undefined on
read.
Writing to this address writes the least significant two bits
of the DacData3 register. These two bits may be read for
test purposes.
Writing to this address writes the most significant eight
bits of the DacData1 register and updates DAC 1. This
register may also be read for test purposes.
Reserved. These bits should be set Low. Undefined on
read.
Writing to this address writes the least significant two bits
of the DacData1 register. These two bits may be read for
test purposes.
Reserved. These bits should be set Low. Undefined on
read.
Writing to this address writes the least significant two bits
of the DacData2 register. These two bits may be read for
test purposes.
Writing to this address writes the most significant eight
bits of the DacData2 register and updates DAC 2. This
register may also be read for test purposes.
Writing to this address writes the most significant eight
bits of the DacData3 register and updates DAC 3. This
register may also be read for test purposes.
43
Function
CMX980A
D/980A/3