LLCC68 datasheet(67/111 Pages) SEMTECH

67 / 111 page

LLCC68

Data Sheet

Rev. 1.1

DS.LLCC68.W.APP

Dec 2024

67 of 111

Semtech

LLCC68

www.semtech.com

13.1.2 SetStandby

The command SetStandby(...) sets the device in a configuration mode which is at an intermediate level of consumption. In this mode,

the chip is placed in halt mode waiting for instructions via SPI. This mode is dedicated to chip configuration using high level commands such

as SetPacketType(...).

By default, after battery insertion or reset operation (pin NRESET goes low), the chip enters in STDBY_RC mode running with a 13MHz RC

clock.

The StdbyConfig byte definition is as follows:

13.1.3 SetFs

The command SetFs() sets the device in the frequency synthesis mode where the PLL is locked to the carrier frequency. This mode is used

for test purposes of the PLL and can be considered as an intermediate mode. It is automatically reached when going from STDBY_RC mode

to TX mode or RX mode.

In FS mode, the PLL is set to the frequency programmed by the function SetRfFrequency(...) which is the same used for TX or RX

operations.

Table 13-3: SetConfig SPI Transaction

Byte

Data from host

Opcode = 0x80

StdbyConfig

Table 13-4: STDBY Mode Configuration

StdbyConfig

Value

Description

STDBY_RC

Device running on RC13M, set STDBY_RC mode

STDBY_XOSC

Device running on XTAL 32MHz, set STDBY_XOSC mode

Table 13-5: SetFs SPI Transaction

Byte

Data from host

Opcode = 0xC1

LLCC68 Datasheet(PDF) 67 Page - Semtech Corporation