ADuCM320 Hardware Reference Manual
UG-498
Rev. C | Page 41 of 196
IDAC1 Data Register
Address: 0x40086808, Reset: 0x00000000, Name: IDAC1DAT
Table 30. Bit Descriptions for IDAC1DAT
Bits
Bit Name
Description
Reset Access
[31:28] RESERVED Reserved. Write 0.
0x0
R
[27:17] DATH
IDAC1 high data.
0x0
RW
[16:12] DATL
IDAC1 low data.
0x0
RW
[11:4]
RESERVED Reserved.
0x0
R
3
SYNC3
IDAC3 sync bit. Setting the SYNC3 bits of all IDAC channels to 1 prevents IDAC3 from updating.
When the SYNC3 bit of any of the IDAC channels is 0, IDAC3 updates immediately when it is written.
0x0
RW
2
SYNC2
IDAC2 sync bit. Setting the SYNC2 bits of all IDAC channels to 1 prevents IDAC2 from updating.
When the SYNC2 bit of any of the IDAC channels is 0, IDAC2 updates immediately when it is written.
0x0
RW
1
SYNC1
IDAC1 sync bit. Setting the SYNC1 bits of all IDAC channels to 1 prevents IDAC1 from updating.
When the SYNC1 bit of any of the IDAC channels is 0, IDAC1 updates immediately when it is written.
0x0
RW
0
SYNC0
IDAC0 sync bit. Setting the SYNC0 bits of all IDAC channels to 1 prevents IDAC0 from updating.
When the SYNC0 bit of any of the IDAC channels is 0, IDAC0 updates immediately when it is written.
0x0
RW
IDAC1 Control Register
Address: 0x4008680C, Reset: 0x01, Name: IDAC1CON
Table 31. Bit Descriptions for IDAC1CON
Bits
Bit Name
Description
Reset Access
7
CLRB
IDAC1 clear bit.
0x0
RW
0: clear IDAC1DAT
1: enable write
6
SHT_EN
IDAC1 shutdown enable. Enables automatic shutdown in case of overtemperature.
0x0
RW
0: disable this function
1: enable this function
[5:2]
BW
IDAC1 bandwidth. See the IDAC Output Filter section for more details.
0x0
RW
1
PUL
IDAC1 pull-down.
0x0
RW
0: disable the pull-down current source
1: enable the pull-down current source
0
PD
IDAC1 power down.
0x1
RW
0: powers up IDAC1
1: powers down IDAC1
IDAC2 Data Register
Address: 0x40086810, Reset: 0x00000000, Name: IDAC2DAT
Table 32. Bit Descriptions for IDAC2DAT
Bits
Bit Name
Description
Reset Access
[31:28] RESERVED Reserved. Write 0.
0x0
R
[27:17] DATH
IDAC2 high data.
0x0
RW
[16:12] DATL
IDAC2 low data.
0x0
RW
[11:4]
RESERVED Reserved.
0x0
R
3
SYNC3
IDAC3 sync bit. Setting the SYNC3 bits of all IDAC channels to 1 prevents IDAC3 from updating.
When the SYNC3 bit of any of the IDAC channels is 0, IDAC3 updates immediately when it is written.
0x0
RW
2
SYNC2
IDAC2 sync bit. Setting the SYNC2 bits of all IDAC channels to 1 prevents IDAC2 from updating.
When the SYNC2 bit of any of the IDAC channels is 0, IDAC2 updates immediately when it is written.
0x0
RW
1
SYNC1
IDAC1 sync bit. Setting the SYNC1 bits of all IDAC channels to 1 prevents IDAC1 from updating.
When the SYNC1 bit of any of the IDAC channels is 0, IDAC1 updates immediately when it is written.
0x0
RW
0
SYNC0
IDAC0 sync bit. Setting the SYNC0 bits of all IDAC channels to 1 prevents IDAC0 from updating.
When the SYNC0 bit of any of the IDAC channels is 0, IDAC0 updates immediately when it is written.
0x0
RW