Nonvolatile, Quad, 8-Bit DACs

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13

The nonvolatile store command is ignored if all DACs

are muted or in shutdown.

Register Write Command

This command directly loads the DAC data to the

selected DAC volatile register and updates the respec-

tive output on the rising edge CLK corresponding to

D0. The mute/shutdown volatile register is also accessi-

ble through this command by setting A2 high. A 1 in

any of the four MSBs (D7–D4) mutes the selected DAC;

a 1 in any of the four LSBs (D3–D0) disables the select-

ed DAC (Table 1). The DAC operating states change

DIN

CS

CLK

START

DOUT

D3

D4

D5

D6

D7

D2

D1

D0

A2

A0

A1

HIGH IMPEDANCE

RDY/BSY (MAX5105 ONLY)

C1

C0

Figure 5. Nonvolatile Store Command Timing Diagram

Table 3. Nonvolatile Store Command

START

C1

C0

A2

A1

A0

D7

D6

D5

D4

D3

D2

D1

D0

1

0

0

Address

8-Bit Data

Table 4. Register Write Command

START

C1

C0

A2

A1

A0

D7

D6

D5

D4

D3

D2

D1

D0

1

0

1

Address

8-Bit Data

Table 5. Nonvolatile Read Command

START

C1

C0

A2

A1

A0

D7

D6

D5

D4

D3

D2

D1

D0

1

1

0

Address

Don’t Care

Table 6. Nonvolatile Load Command

START

C1

C0

A2

A1

A0

D7

D6

D5

D4

D3

D2

D1

D0

1

1

1

Address

Don’t Care

Table 7. Mute/Shutdown Modes

START

C1

C0

A2

A1

A0

D7

D6

D5

D4

D3

D2

D1

D0

1

0

0

1

0

0

Mute/Shutdown State