AFE031 datasheet(39/59 Pages) TI2

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0.1 F

10 kW

(typ)

10 kW

(typ)

10 kW

(typ)

10 kW

(typ)

TMP411

D+

D-

V+

GND

SCL

SDA

ALERT/THERM2

THERM

+3.3 V

SMBus

Controller

Over-Temperature

Fault

50 pF

50 W

TSENSE

AFE031

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SBOS531E – AUGUST 2010 – REVISED JUNE 2019

Product Folder Links: AFE031

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Pin Descriptions (continued)

Table 8 lists the register contents associated with each interrupt condition.

Table 8. Register Contents to Configure the Interrupt Pin

FUNCTION

CONTROL2 REGISTER CONTENTS:

DETERMINE INTERRUPT PIN FUNCTIONALITY

I_FLAG_EN

(CURRENT

OVERLOAD)

T_FLAG_EN

(THERMAL

OVERLOAD)

POR (default values)

undefined

No interrupt

Interrupt on thermal overload only

Interrupt on current overload only

Interrupt on thermal or current

overload

TSENSE Pin (10)

The TSENSE pin is internally connected to the anode of a temperature-sensing diode located within the PA

output stage. Figure 44 shows a remote junction temperature sensor circuit that can be used to measure the

junction temperature of AFE031. Measuring the junction temperature of the AFE031 is optional and not required.

Figure 44. Interfacing the TMP411 to the AFE031

Tx_FLAG (Pin 47)

The Tx_FLAG pin is an open drain output that indicates the readiness of the Tx signal path for transmission.

When the Tx_FLAG pin is high, the transmit signal path is enabled and ready for transmission. When the

Tx_FLAG pin is low, the transmit path is not ready for transmission.

Rx_FLAG (Pin 48)

The Rx_FLAG pin is an open drain output that indicates the readiness of the Rx signal path for transmission.

When the Rx_FLAG pin is high, the transmit signal path is enabled and ready for transmission. When the

Rx_FLAG pin is low, the transmit path is not ready for transmission.

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