SNAS730A March 2018 – November 2018 LMX8410L
PRODUCTION DATA.
The LMX8410L can be programmed for two functional modes: internal LO mode (using the integrated synthesizer) or external LO mode (bypassing the integrated synthesizer). In internal LO mode, when 4GHz <= LO frequency <=7.5 GHz, use divide-by-2 (Div 2) mode; when 7.5 GHz <= LO frequency <= 10 GHz, use polyphase filter mode (Poly). Refer to Table 3 to set up registers correctly. Under special circumstances where integrated synthesizer fails to lock at 7.5 ~ 7.7GHz, refer to VCO Range Uncertainty for 7.5 to 7.7 GHz for more instructions.
FIELD NAME | ADDRESS | INTERNAL LO/DIV2 | INTERNAL LO/Poly | EXTERNAL LO |
---|---|---|---|---|
PLL_PD | R0[0] | 0 | 0 | 1 |
LO_OUT_PD | R44[7] | 1 | 1 | 1 |
SIGCHAIN_PD | R79[0] | 0 | 0 | 0 |
LO_PATH_EN | R79[14:12] | 0 | 7 | 7 |
LO_MUX | R80[5:0] | 9 | 10 | 34 |
SM_CLK_SEL | R81[0] | 0 | 0 | 1 |
EXTLO_CLK_DRV_EN | R81[2:1] | 0 | 0 | 3 |
LO_DRVR_MODE | R81[5:4] | 1 | 0 | 3 |
EXTLO_CLK_DIV_EN | R81[7:6] | 0 | 0 | 3 |
LO_POLY_MODE1 | R81[11:8] | 3 | 0 | 15 |
LO_POLY_MODE2 | R103[13:10] | 11 | 0 | 0 |
EXTLO_INT_MATCH_RES | R123[1:0] | 0 | 0 | 3 |