GS2986 Datasheet, PDF (36/41 Pages) Gennum Corporation – Standards indication in Auto mode

4.16 Device Power-up
In host mode (HIF pin tied LOW), control & status registers (CSRs) may start up in a random state.
There is a bit in the command word R which will reset the CSR when set LOW.
In non-host mode (HIF pin tied HIGH), the HIF pin is used to trigger an internal reset signal to
place all registers in a deterministic, default state upon power-up.
In either host mode or non-host mode, other internal state machines (e.g. offset correction and
PLL) automatically recover from any state at start-up with no reset required. It takes ~10μs for
the device to lock after start-up.
4.17 Standby
The purpose of Standby mode is to allow operating power to be reduced when the device's
functionality is not required, and to have a rapid and simple transition to full operation when
the device is required.
In order to achieve this, the device can be powered-down by writing a ‘1’ to the ‘Power Down’
bit located in register address 0x02.
GS2986 Multi-Rate SDI Reclocker with Equalization &
De-emphasis
Data Sheet
52134 - 3
July 2012
36 of 41