12.3.8 PLL Divider Register

Name: PLLxDIV
Offset: 0x318C, 0x3198

Bit 3130292827262524 
   PLLPRE[5:0] 
Access R/WR/WR/WR/WR/WR/W 
Reset 000001 
Bit 2322212019181716 
     PLLFBDIV[11:8] 
Access R/WR/WR/WR/W 
Reset 0000 
Bit 15141312111098 
 PLLFBDIV[7:0] 
Access R/WR/WR/WR/WR/WR/WR/WR/W 
Reset 11001000 
Bit 76543210 
   POSTDIV1[2:0]POSTDIV2[2:0] 
Access R/WR/WR/WR/WR/WR/W 
Reset 111001 

Bits 29:24 – PLLPRE[5:0] PLLx Reference Clock Prescale bits

The allowable PLL reference input clock frequency is 5 MHz-800 MHz.
ValueDescription
111111 63x divide
111110 62x divide
...
000010 2x divide
000001 1x divide
000000 undefined, not allowed

Bits 19:16 – PLLFBDIV[11:8] PLLx Feedback Divider bits

ValueDescription
111111 63x divide
111110 62x divide
...
000010 2x divide
000001 1x divide
000000 undefined, not allowed

Bits 15:8 – PLLFBDIV[7:0] PLLx Feedback Divider bits

The allowable PLL reference input clock frequency is 5 MHz-800 MHz.
ValueDescription
111111 63x divide
111110 62x divide
...
000010 2x divide
000001 1x divide
000000 undefined, not allowed

Bits 5:3 – POSTDIV1[2:0] PLLx Post Divider #1 bits

ValueDescription
111 7x divide
110 6x divide
...
010 2x divide
001 1x divide
000 undefined, not allowed

Bits 2:0 – POSTDIV2[2:0] PLLx Post Divider #2 bits

ValueDescription
111 7x divide
110 6x divide
...
010 2x divide
001 1x divide
000 undefined, not allowed