External ToD Bus Interface - 4.1 English

10G/25G High Speed Ethernet Subsystem Product Guide (PG210)

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4.1 English
Table 1. External ToD Bus Interface
Signal Direction Clock Domain Description
tod_1pps_in I N/A External bus 1-PPS input
tod_sec_clk_in I N/A External bus clock, used for tod_sec_in
tod_sec_in I tod_sec_clk_in External bus seconds serial data
tod_1pps_out O ts_clk

1-PPS output

Asserted when the system timer’s nano-second field rolls over

tod_sec_clk_out I N/A Echo of external bus clock
tod_sec_out I tod_sec_clk_in Serial output of internal ToD seconds