External ToD Bus Interface - 2.6 English

1G/10G/25G Switching Ethernet Subsystem Product Guide (PG292)

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

1-PPS output

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

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