Datasheet

AD9776A/AD9778A/AD9779A
Rev. B | Page 32 of 56
Register
Address
Bits
Register Name 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.
00
00000000
0x12 7 Auxiliary DAC2 sign 0: AUX2_P active.
1: AUX2_N active.
0
0x12 6
Auxiliary DAC2 current
direction
0: source.
1: sink.
0
0x12 5 Auxiliary DAC2 power-down 0: auxiliary DAC2 on.
1: auxiliary DAC2 off.
0
0x13 to
0x18
Reserved
Interrupt 0x19 7 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.
0
0x19 6 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.
0
0x19 4 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.
0
0x19 3 Data timing error IRQ enable 0: data timing error IRQ is masked.
1: data timing error IRQ is enabled.
0
0x19 2 Sync timing error IRQ enable 0: sync timing error IRQ is masked.
1: sync timing error IRQ is enabled.
0
0x19 0 Internal sync loopback
The received SYNC_O signal is looped back to the
SYNC_I signal.
0
Version 0x1F 7:0 Version[7:0] Indicates device hardware revision number. 00000111