14.3.4 Page 3 Registers Si5340
Table 14.160. 0x0302-0x0307 N0 Numerator
Reg Address Bit Field Type Setting Name Description
0x0302 7:0 R/W N0_NUM 44-bit Integer Number
0x0303 15:8 R/W N0_NUM
0x0304 23:16 R/W N0_NUM
0x0305 31:24 R/W N0_NUM
0x0306 39:32 R/W N0_NUM
0x0307 43:40 R/W N0_NUM
The N dividers are interpolative dividers that are used as output dividers that feed into the R dividers. ClockBuilder Pro calculates the
correct values for the N-dividers.
Table 14.161. 0x0308-0x030B N0 Denominator
Reg Address Bit Field Type Setting Name Description
0x0308 7:0 R/W N0_DEN 32-bit Integer Number
0x0309 15:8 R/W N0_DEN
0x030A 23:16 R/W N0_DEN
0x030B 31:24 R/W N0_DEN
Table 14.162. 0x030C N0 Divider Update Bit
Reg Address Bit Field Type Setting Name Description
0x030C 0 S N0_UPDATE Must write a 1 to this bit to cause N0 divider changes to
take effect.
Table 14.163. N Dividers for N1, N2, N3
Register Address Setting Name Size Same as Address
0x030D-0x0312 N1_NUM 48-bit Integer Number 0x0302-0x0307
0x0313-0x0316 N1_DEN 32-bit Integer Number 0x0308-0x030B
0x0318-0x031D N2_NUM 48-bit Integer Number 0x0302-0x0307
0x031E-0x0321 N2_DEN 32-bit Integer Number 0x0308-0x030B
0x0323-0x0328 N3_NUM 48-bit Integer Number 0x0302-0x0307
0x0329-0x032C N3_DEN 32-bit Integer Number 0x0308-0x030B
Table 14.164. 0x0317 N1 Divider Update Bit
Reg Address Bit Field Type Setting Name Description
0x0317 0 S N1_UPDATE Must write a 1 to this bit to cause N1 divider changes to
take effect.
Si5341, Si5340 Rev D Family Reference Manual • Register Map
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