PCIe-24DSI32
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A-7
Table 3.6.2.1-1. PLL Nref Register
Offset: 0004h
Default: 0000 01F4h
BIT FIELD
MODE
DESIGNATION
FUNCTION
D[09..00]
R/W
REF FACTOR
(Nref)
PLL Reference factor; 30-1000.
D[31..10]
R/W
(Reserved)
---
Table 3.6.2.1-2. PLL Nvco Register
Offset: 0008h
Default: 0000 01F4h *
BIT FIELD
MODE
DESIGNATION
FUNCTION
D[09..00]
R/W
VCO FACTOR
(Nvco)
PLL VCO factor; 30-1000.
D[31..10]
R/W
(Reserved)
---
Table 3.6.2.1-3. Summary of PLL Sample Rate Control Parameters
PARAMETER
NOTATION
RANGE
VCO Frequency Range
Fgen
20-55 MHz
VCO Factor
Nvco
30-1000
Reference Factor
Nref
30-1000
Rate Divisor
Ndiv
0 - 25
Reference Frequency
Fref
Standard value = 32.768MHz
Table 3.6.2.2-1. Legacy Rate Control Register
Offset: 0008h
Default: 0000 0000h *
BIT FIELD
MODE
DESIGNATION
FUNCTION
D[16..00]
R/W
RATE CONTROL
(Nrate)
Frequency control factor; 0-511
D[31..17]
R/W
(Reserved)
---
* Default frequency is 25.6MHz.
