ADUC7128 Datasheet, PDF (42/92 Pages) Analog Devices – Precision Analog Microcontroller ARM7TDMI MCU with 12-bit ADC & DDS DAC

ADuC7128
Preliminary Technical Data
DACEN Register
Name
DACEN
Address
0xFFFF06B8
Default Value
0x00
DACEN MMR Bit Designations
Bit
7 to 1
0
Description
Reserved.
Set to ‘1’ by the user to enable DAC mode
Set to ‘0’ by the user to enable DDS mode
Access
RW
DACDAT Register
Name
DACDAT
Address
0xFFFF06B4
Table 23. DACDAT MMR Bit Designations
Bit
Description
15 to 10
Reserved.
9 to 0
10-bit data for DAC
Default Value
0x0000
Access
RW
The DACDAT MMR controls the output of the DAC. The data written to this register is a +/- 9 bits signed value. This means that
0x0000 represents midscale, 0x0200 represents zero scale and 0x01FF full scale.
DACEN and DACDAT require key access, the write to these MMRs follow the sequence below,
DACEN
DACKEY0 = 0x07
DACEN = User Value
DACKEY1 = 0xB9
DACDAT
DACKEY0 = 0x07
DACDAT = User Value
DACKEY1 = 0xB9
Rev. PrA | Page 42 of 92