The LMH1297 register map is divided into three register pages. These register pages are used to control different aspects of the LMH1297 functionality. A brief summary of the pages is shown below:
- Share Register Page: this page corresponds
to global parameters, such as LMH1297 device ID, I/O direction override, and
LOCK_N status configuration. This is the default page at start-up. Access
this page by setting Reg 0xFF[2:0] = 000’b.
- CTLE/CDR Register Page: this page
corresponds to IN0 PCB CTLE, input and output mux settings, CDR settings,
and output interrupt overrides. Access this page by setting Reg 0xFF[2:0] =
100’b.
- ConfigIO Register Page: this page
corresponds to SDI_IO Cable Equalizer settings. This page also controls the
OUT0, SDI_IO, and SDI_OUT driver output settings. Access this page by
setting Reg 0xFF[2:0] = 101’b.
For the complete register map, typical device configurations, and proper register reset sequencing, refer to the LMH1297 Programming Guide.