TRF1500 Control State

SWRA004A

The TRF1500 operates in 18 different states: The control code and active circuits are given in Table 2.

Table 2. Control State and the Corresponding Active Circuits

Control Code		Active Circuits
(HI/LO, SYN ON, RX ON, TX ON, STRONG SIGNAL, X2)
000000	Sleep Mode
010000	Low-Band LO Input Buffer On	LB LO Buffer
011000	Low-Band Receive Normal	LB LO Buffer, LB LNA, LB Mixer
011010	Low-Band Receive Strong Signal	LB LO Buffer, LB Mixer
010100	Low-Band Transmit Mixer	LB LO Buffer, LB TX Mixer

011100	Low-Band Receive and Transmit Mixer	LB LO Buffer, LB LNA (On High), LB Mixer, LB TX
		Mixer
011110	Low-Band Transmit Mixer	LB LO Buffer, LB LNA (On High), LB Mixer

010001	Doubler On	LB LO Buffer, Frequency Doubler, HB LO Buffer
011001	Low-Band Receive Normal, Doubler On	LB LO Buffer, LB LNA, LB Mixer, Frequency
		Doubler
011011	Low-Band Receive Strong Signal, Doubler	LB LO Buffer, LB Mixer, Frequency Doubler
	On
011111	Low-Band Transmit, Doubler On	LB LO Buffer, LB LNA (On High), LB Mixer, LB TX
		Mixer
111011	High-Band Receive Strong Signal, Doubler	HB LO Buffer, HB Mixer, Frequency Doubler
	On
110000	High-Band LO Input Buffer On	HB LO Buffer
111000	High-Band Receive Normal	HB LO Buffer, HB LNA, HB Mixer
111010	High-Band Receive Strong Signal	HB LO Buffer, HB Mixer

111001	High-Band Receive Frequency, Doubler On	LB LO Buffer, HB LO Buffer, HB LNA, HB Mixer,
		Frequency Doubler
110100	High-Band Transmit Normal	HB LO Buffer, HB TX Mixer

110101	High-Band Transmit Frequency, Doubler	HB LO Buffer, HB TX Mixer, Frequency Doubler,
	On	LB LO Buffer

TRF1500 Integrated Dual-Band RF Receiver User’s Guide