MAX1220_12 Datasheet, PDF (32/43 Pages) Maxim Integrated Products – 12-Bit, Multichannel ADCs/DACs with FIFO,Temperature Sensing, and GPIO Ports

12-Bit, Multichannel ADCs/DACs with FIFO,
Temperature Sensing, and GPIO Ports
Table 20. DAC Serial-Interface Configuration
MSB
CONTROL
BITS
16-BIT SERIAL WORD
DATA BITS
LSB
DESCRIPTION
FUNCTION
C3 C2 C1 C0 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
0 0 00XXXXXXX XXXXX
NOP
No operation.
0 0 01 0X 0XXXX XXXXX
RESET
Reset all internal registers to 000h and
leave output buffers in their present state.
0 0 01 1X 1XXXX XXXXX
Pull-High
Preset all internal registers to FFFh and
leave output buffers in their present state.
0 0 1 0 ————————————
DAC0
D11–D0 to input register 0,
DAC output unchanged.
0 0 1 1 ————————————
DAC1
D11–D0 to input register 1,
DAC output unchanged.
0 1 0 0 ————————————
DAC2
D11–D0 to input register 2,
DAC output unchanged.
0 1 0 1 ————————————
DAC3
D11–D0 to input register 3,
DAC output unchanged.
0 1 1 0 ————————————
DAC4
D11–D0 to input register 4,
DAC output unchanged.
0 1 1 1 ————————————
DAC5
D11–D0 to input register 5,
DAC output unchanged.
1 0 0 0 ————————————
DAC6
D11–D0 to input register 6,
DAC output unchanged.
1 0 0 1 ————————————
DAC7
D11–D0 to input register 7,
DAC output unchanged.
D11–D0 to input registers 0–3 and DAC
1 0 1 0 — — — — — — — — — — — — DAC0–DAC3 registers 0–3. DAC outputs updated
(write-through).
D11–D0 to input registers 4–7 and DAC
1 0 1 1 — — — — — — — — — — — — DAC4–DAC7 registers 4–7. DAC outputs updated
(write-through).
D11–D0 to input registers 0–7 and DAC
1 1 0 0 — — — — — — — — — — — — DAC0–DAC7 registers 0–7. DAC outputs updated
(write-through).
1
1
0
1 ————————————
DAC0–DAC7
D11–D0 to input registers 0–7.
DAC outputs unchanged.
1110
Input registers to DAC registers indicated
X
X
X
X
DAC0–DAC7
by ones, DAC outputs updated,
equivalent to software LDAC.
(No effect on DACs indicated by zeros.)
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