Datasheet

MAX1020/MAX1022/MAX1057/MAX1058
10-Bit, Multichannel ADCs/DACs with FIFO,
Temperature Sensing, and GPIO Ports
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Table 20. DAC Serial-Interface Configuration
16-BIT SERIAL WORD
MSB LSB
CONTROL
BITS
DATA BITS
C3 C2 C1 C0 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 X X
DESCRIPTION FUNCTION
0 0 0 0 X X X X X X X X X X X X NOP No operation.
0 0 0 1 0 X X X X X X X X X X X RESET
Reset all internal registers to 000h and
leave output buffers in their present state.
0 0 0 1 1 X X X X X X X X X X X Pull-High
Preset all internal registers to FFFh and
leave output buffers in their present state.
0 0 1 0 — — — — — — — — — — X X DAC0
D9–D0 to input register 0,
DAC output unchanged.
0 0 1 1 — — — — — — — — — — X X DAC1
D9–D0 to input register 1,
DAC output unchanged.
0 1 0 0 — — — — — — — — — — X X DAC2
D9–D0 to input register 2,
DAC output unchanged.
0 1 0 1 — — — — — — — — — — X X DAC3
D9–D0 to input register 3,
DAC output unchanged.
0 1 1 0 — — — — — — — — — — X X DAC4
D9–D0 to input register 4,
DAC output unchanged.
0 1 1 1 — — — — — — — — — — X X DAC5
D9–D0 to input register 5,
DAC output unchanged.
1 0 0 0 — — — — — — — — — — X X DAC6
D9–D0 to input register 6,
DAC output unchanged.
1 0 0 1 — — — — — — — — — — X X DAC7
D9–D0 to input register 7,
DAC output unchanged.
1 0 1 0 — — — — — — — — — — X X DAC0–DAC3
D9–D0 to input registers 0–3 and DAC
registers 0–3. DAC outputs updated
(write-through).
1 0 1 1 — — — — — — — — — — X X DAC4–DAC7
D9–D0 to input registers 4–7 and DAC
registers 5–8. DAC outputs updated
(write-through).
1 1 0 0 — — — — — — — — — — X X DAC0–DAC7
D9–D0 to input registers 0–7 and DAC
Registers 0–7. DAC outputs updated
(write-through).
1 1 0 1 — — — — — — — — — — X X DAC0–DAC7
D9–D0 to input registers 0–7.
DAC outputs unchanged.
1110
DAC7 DAC6 DAC5 DAC4 DAC3 DAC2 DAC1 DAC0
X X X X DAC0–DAC7
Input registers to DAC registers indicated
by ones, DAC outputs updated,
equivalent to software LDAC.
(No effect on DACs indicated by zeros.)