GS1675 datasheet(29/37 Pages) SEMTECH

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GS1675 SD/HD SDI Reclocker

Data Sheet

54174 - 1

June 2011

29 of 37

3.15 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 (example: 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.

3.16 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.

GS1675 Datasheet(PDF) 29 Page - Semtech Corporation