lm4935rlx National Semiconductor Corporation, lm4935rlx Datasheet - Page 29

• Manufacturer Part Number: lm4935rlx
• Description: Audio Sub-system With Dual-mode Stereo Headphone And Mono High Efficiency Loudspeaker Amplifiers And Multi-purpose Adc
• Manufacturer: National Semiconductor Corporation

Bits
12.0 Status & Control Registers
12.8 PLL N MODULUS CONFIGURATION REGISTER
This register is used to control the modulation applied to the feedback divider of the PLL.
The complete N divider is a fractional divider as such:
If the modulus input is zero then the N divider is simply an integer N divider. The output from the PLL is determined by the
following formula:
Note 14: See Further Notes on PLL Programming for more details.
4:0
6:5
7
DITHER_LEVEL
PLL_N_MOD
RSVD
Field
Programs the PLL N divider’s fractional component:
Allows control over the dither used by the N divider:
RESERVED
DITHER_LEVEL
PLL_N_MOD
TABLE 9. PLL_N_MOD (0x05h)
N = PLL_N + PLL_N_MOD/32
2 to 30
00
01
10
11
31
0
1
2
2
2
2
F
out
(Continued)
= (F
in
29
*N)/(M*P)
Description
Fractional Addition
2/32 to 30/32
Medium
31/32
Value
Small
Large
0/32
1/32
Off
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