402-00005-00
DAC and PLL Programming
4–12
Rev 02; February 8, 2002
4.2.10 PLL Register 6 (PLLA6)
0
7
PLL Address 0x6
DACRST
OMUX4
OMUX3
OMUX2
OMUX1
LCOUNT2
LCOUNT1
LCOUNT0
8
15
Reserved
Reserved
Reserved
Reserved
Reserved
EXTREF
AUXCLK
AUXEN
PCR_PLLA6_16
Bit
Mnemonic
Function
2–0
LCOUNT
Load Counter
3
OMUX1
Output 1 Select
4
OMUX2
Output 2 Select
5
OMUX3
Output 3 Select
6
OMUX4
Output 4 Select
7
DACRST
DAC Reset
8
AUXEN
Output Test Mode
9
AUXCLK
Output Clock for Test Mode
10
EXTREF
EXTREF Select
15–11
Reserved
Don’t care
4.2.10.1 Load Counter (LCOUNT) R/W
These bits define the divide ratio of the PLL Load Counter. Default setting is 7. Refer to the Examples for Program-
ming PLL and XTAL mode for finding LCOUNT values.
LCOUNT
Function
0
3 (1–pos, 0–neg)
1
4 (pos edge)
2
4 (neg edge)
3
5 (1–neg, 0–pos)
4
6 (pos edge)
5
8 (pos edge)
6
8 (neg edge)
7
10 (neg edge)
4.2.10.2 Output 1 Select (OMUX1) R/W
The OMUX1 bit selects the source to output clock 1 which is the clock output used on PCVisionplus. Always pro-
gram to zero.
OMUX1
Function
0
Select Load Counter Output
1
not supported
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com