si514 Silicon Laboratories, si514 Datasheet - Page 20

• Manufacturer Part Number: si514
• Description: Any-frequency I 2c Programmable Xo 100 Khz To 250 Mhz
• Manufacturer: Silicon Laboratories

Si 514
Register 11.
Register 14.
20
6:4
3:2
1:0
7:6
5:4
3:0
Bit
Bit
Default
7
Name
Default
Type
Name
Type
Bit
Bit
HS_DIV[9:8]
OE_STATE[1:0]
LS_DIV[2:0]
Reserved
Reserved
Reserved
Reserved
Name
Name
R/W
R/W
7
7
Last output divider stage. Used during large frequency changes. To update, follow
large frequency change procedure. LS_DIV value updates asynchronously.
000: divide-by-1
001: divide-by-2
010: divide-by-4
011: divide-by-8
100: divide-by-16
101: divide-by-32
All others reserved.
Integer divider that divides VCO frequency and provides output to LS-DIV. Follow the
large frequency change procedure when updating. The allowed values are even num-
bers in the range from 10 to 1022 (i.e., 10, 12, 14, 16, ..., 1022). The decimal value
represents the actual divide value (i.e., 12 means divide-by-12).
Sets logic state of output when output disabled.
00: high impedance
10: logic low when output disabled
01: logic high when output disabled
11: reserved
R/W
6
6
LS_DIV[2:0]
Varies
R/W
OE_STATE[1:0]
5
5
0
Preliminary Rev. 0.9
R/W
4
4
0
Function
Function
R/W
R/W
3
3
R/W
R/W
2
2
R/W
1
1
HS_DIV[9:8]
Varies
R/W
R/W
0
0