Datasheet

LM49350, LM49350RLEVAL
www.ti.com SNAS359D –SEPTEMBER 2008–REVISED JUNE 2012
Table 10. PLL1_N (0x05h)
Bits Field Description
7:0 PLL1_N This programs the PLL1 N divider to divide from 1 to 250.
PLL1_N Feedback Divider Value
00000000 to 00001010 10
00001011 11
00001100 12
00001101 13
00001110 14
00001111 15
— —
11111000 248
11111001 249
11111010 to 11111111 250
Table 11. PLL1_N_MOD (0x06h)
Bits Field Description
4:0 PLL1_N_MOD This programs the sigma-delta modulator in PLL1
PLL1_N_MOD Fractional Part of N
00000 0
00001 1/32
00010 2/32
00011 3/32
00100 4/32
00101 5/32
— —
11101 20/32
11110 30/32
11111 31/32
5 PLL1_P1[8] This sets the MSB of the 1st P Divider on PLL1 which is part of a standard half-cycle divider
control.
6 PLL1_P2[8] This sets the MSB of the 2nd P Divider on PLL1 which is part of a standard half-cycle divider
control.
Table 12. PLL1_P1 (0x07h)
Bits Field Description
7:0 PLL1_P1[7:0] This programs the 8 LSBs of the PLL1's P1 Divider. These LSBs combine with PLL1_P1[8] which
allows the P1 divider to divide by up to 256
PLL1_P1 P1 Divider Value
000000000 1
000000001 1
000000010 1.5
000000011 2
000000100 2.5
000000101 3
— —
111111101 255
111111110 255.5
111111111 256
Copyright © 2008–2012, Texas Instruments Incorporated Submit Documentation Feedback 37
Product Folder Links: LM49350 LM49350RLEVAL