DAC and PLL Programming
PCVisionplus
Hardware Reference
4–13
Rev 02; February 8, 2002
4.2.10.3 Output 2 Select (OMUX2) R/W
The OMUX2 bit selects the source to output clock 2, which is not used on the PCVisionplus. Always program
OMUX2 to zero.
4.2.10.4 Output 3 Select (OMUX3) R/W
The OMUX3 bit selects the source to output clock 3, which is not used on the PCVisionplus. Always program
OMUX3 to zero.
4.2.10.5 Output 4 Select (OMUX4) R/W
The OMUX4 bit selects the source to output clock 2, which is not used on the PCVisionplus. Always program
OMUX2 to 0.
4.2.10.6 DAC Reset (DACRST)
This bit must be zero for proper operation. Always program DACRST to zero.
4.2.10.7 Output Test Mode (AUXEN) R/W
This bit puts the PLL circuit into test mode for diagnostic purposes only. This bit should always be zero.
4.2.10.8 Output Clock for Test Mode (AUXCLK) R/W
This bit is only used in diagnostic test mode, and should always be zero.
4.2.10.9 EXTREF Select (EXTREF) R/W
This bit selects the input to the PLL. Default setting is 0. Always program this bit to 1.
EXTREF
Function
0
Cyrstal input, not supported.
1
External Reference Input Operation
4.2.11 PLL Register 7 (PLLA7) N/A
0
7
PLL Address 0x7
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
8
15
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
PLLA7
This register is not used and access to it is prohibited.
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