SN260 datasheet(6/88 Pages) STMICROELECTRONICS

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Pin assignment

SN260

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Pin assignment

Figure 1.

SN260 pin assignment

V DD_ VCO

RF _ P

V DD_ RF

RF _ N

RF _ T X_ A L T _ P

R F _ T X_ AL T_ N

VD D _ IF

BIAS _ R

V D D _ PAD SA

TX _A C T IV E

nS IF _L O A D

SIF _ M O SI

SIF _ M IS O

SIF _ CL K

nH O S T_IN T

RE S

VDD_ P A D S

PT I_ DA T A

PT I_ E N

n SSEL

GN D

EM 2 6 0

SN260

Table 1.

Pin descriptions

Pin #

Signal

Direction

Description

VDD_VCO

Power

1.8V VCO supply

RF_P

I/O

Differential (with RF_N) receiver input/transmitter output

RF_N

I/O

Differential (with RF_P) receiver input/transmitter output

VDD_RF

Power

1.8V RF supply (LNA and PA)

RF_TX_ALT_P

Differential (with RF_TX_ALT_N) transmitter output (optional)

RF_TX_ALT_N

Differential (with RF_TX_ALT_P) transmitter output (optional)

VDD_IF

Power

1.8V IF supply (mixers and filters)

BIAS_R

Bias setting resistor

VDD_PADSA

Power

Analog pad supply (1.8V)

TX_ACTIVE

Logic-level control for external RX/TX switch

The SN260 baseband controls TX_ACTIVE and drives it high (1.8V)

when in TX mode. (Refer to Table 6 and section TX_ACTIVE signal.)

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