WGCE5039 882560 Intel, WGCE5039 882560 Datasheet - Page 10

• Manufacturer Part Number: WGCE5039 882560
• Manufacturer: Intel

Specifications of WGCE5039 882560

• Lead Free Status / Rohs Status: Compliant

2.1
There are four registers that control the PLL:
The PLF bit is the PLL lock detect circuit output. The PLF bit is set after 64 consecutive comparison cycles in lock.
A chip-wide reset initializes the lock detect output to 0.
The 2[
The 2[
programmable to integer values within the range of 240 to 32767.
Note that when the LO Divider divide value is to be changed, the new value is not actually presented to the LO
Divider until all of the 15-bit control word 2[
programmed (in any order) before the LO divider is updated even if the only data change is in one of the registers.
The C[1:0] bits set the programmed charge pump current
The charge pump current is automatically increased to the next setting dependent on the VCO sub band that has
been selected by the VCO tuning algorithm. This is to compensate for changes in VCO gain and so provide
consistent PLL performance across all sub bands. Programming the highest charge pump value will not allow the
value to be incremented, therefore this value should not be programmed.
The value read back for the charge pump current is the actual value in use for the selected sub band.
Bit Field
Bit Field
Bit Field
7:0
14:8
PLL Registers
6:0
7:6
5:4
3:0
7:0
7
] bits are the LSB bits of the LO Divider divide value. The division ratio of the LO divider is fully
] bits are the MSB bits of the LO Divider divide value.
Name
Name
Name
C[1:0]
R[3:0]
2
2
PLF
[14:8]
[7:0]
-
C[1]
0
0
1
1
Default
Default
Default
0
0
0
0
0
-
Table 6 - Charge Pump Currents
Table 4 - Register 1
Table 3 - Register 0
Table 5 - Register 2
14:0
C[0]
] has been programmed. Register 0 and 1 must be therefore be
0
1
0
1
Type
Type
R/W
Type
R/W
R/W
R/W
R/W
Intel Corporation
R
CE5039
10
.
LSB bits of LO Divider register
PLL Lock Flag
MSB bits of LO Divider register
Test modes
Charge pump current
Reference divider ratio
1000
Typ
400
550
750
Description
Description
Description
Units
uA
uA
uA
uA
Data Sheet