AD9779A-EBZ datasheet(32/56 Pages) AD

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AD9776A/AD9778A/AD9779A

Rev. B | Page 32 of 56

Address

Bits

Parameter

Function

Default

AUX DAC2 Control

0x12

0x11

1:0

7:0

Auxiliary DAC2 Data[9:8]

Auxiliary DAC2 Data[7:0]

Auxiliary DAC2 Data[9:0] is the 10-bit output

current control word. Magnitude of the auxiliary

DAC current increases with increasing value. Bit 9 is

the MSB and Bit 0 is the LSB.

00000000

0x12

Auxiliary DAC2 sign

0: AUX2_P active.

1: AUX2_N active.

0x12

Auxiliary DAC2 current

direction

0: source.

1: sink.

0x12

Auxiliary DAC2 power-down

0: auxiliary DAC2 on.

1: auxiliary DAC2 off.

0x13 to

0x18

Reserved

Interrupt

0x19

Data timing error IRQ

Read only. Active high indicates a timing violation

occurred on the input data port. The IRQ is latched.

This bit is cleared when the Interrupt register is read.

0x19

Sync timing error IRQ

Read only. Active high indicates a timing violation

occurred on the SYNC_I input. The IRQ is latched.

This bit is cleared when the Interrupt register is read.

0x19

Data timing error type

Read only. Indicates the timing error type.

0: hold time violation.

1: setup time violation.

Meaningful when data timing error IRQ is active.

0x19

Data timing error IRQ enable

0: data timing error IRQ is masked.

1: data timing error IRQ is enabled.

0x19

Sync timing error IRQ enable

0: sync timing error IRQ is masked.

1: sync timing error IRQ is enabled.

0x19

Internal sync loopback

The received SYNC_O signal is looped back to the

SYNC_I signal.

Version

0x1F

7:0

Version[7:0]

Indicates device hardware revision number.

00000111

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