SI5338M-A-GMR Silicon Laboratories Inc, SI5338M-A-GMR Datasheet - Page 57

• Manufacturer Part Number: SI5338M-A-GMR
• Manufacturer: Silicon Laboratories Inc

Reset value = xxxx xxxx
Register 29.
Name
Type
7:5
4:3
2:0
Bit
Bit
PFD_IN_REF[2:0]
P1DIV_IN[4:3]
D7
P1DIV[2:0]
Name
PFD_IN_REF[2:0]
R/W
D6
Selects the input clock to be provided to the reference input of PLL Phase
Frequency Detector (PFD).
0: P1DIV_IN selected
1: P2DIV_IN selected
2: P1DIV_OUT (P1 divider output) selected
3: P2DIV_OUT (P2 divider output) selected
4: XOCLK selected
5: No Clock selected
6: Reserved
7: Reserved
These two bits along with reg28[4:2] create a 5-bit field that selects the input to
the P1 divider [reg29[4:3] reg28[4:2]] = P1DIV_IN[4:0].
00000b: Clock from IN,2 selected
01010b: Clock from IN3 selected
10101b: Crystal oscillator selected
All other bit values are reserved
Sets the value of the P1 divider.
0: Divide by 1
1: Divide by 2
2: Divide by 4
3: Divide by 8
4: Divide by 16
5: Divide by 32
D5
D4
Rev. 0.6
P1DIV_IN[4:3]
R/W
D3
Function
D2
P1DIV[2:0]
R/W
D1
Si5338
D0
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