PXE1610C

PDS-PXE1-PXM1-C-001A

5

Pin #

Name

I/O

Type

Description

11

AVRRDY

O

Open Drain

Voltage regulator “Ready” output signal. The AVRRDY indicator will be

asserted when the controller is ready to accept SVID commands after

AVREN is asserted. This open-drain output requires an external pull-up

resistor (1k

recommended). AVRRDY will be pulled low when a shutdown

fault occurs.

12

AVREN

I

1.2V CMOS

Note G

Active high Output Enable input. Asserting the AVREN pin will activate the

digital controller, pending status of the internal power-on-reset circuit and

any existing fault states. De-asserting then asserting AVREN after a latched-

fault based shutdown will cause the controller to enter the soft-start state.

Faults will be cleared when AVREN is reasserted.

13

VRHOT#

O

Open Drain

Active low external temperature indicator. VRHOT# is asserted at the

temperature defined by the programmable TEMP_MAX register.

14

PINALRT#

O

Open Drain

Active low external input supply power alert. PINALRT# is asserted when the

input power reaches the threshold defined by the programmable PIN_MAX

register. Unused PINALRT# may be left open.

15

MP0

I/O

Note D

Multi-purpose pin-0 configurable as BVRRDY, FAULT1, FAULT2, ADREN,

BDREN, or LPM; Unused MP pins may be left open. Note C. Note F

16

MP1

I/O

Note D

Multi-purpose pin-1 configurable as BVREN, BVRRDY, FAULT1, FAULT2,

ADREN, BDREN, or SMBAlert#; Note C. Note F

17

VCLK

I

1.2V CMOS

SVID clock interface. Note E

18

VDIO

I/O

Open Drain

SVID bi-directional data interface. Note

E

19

VALRT#

O

Open Drain

SVID active low ALERT# signal. This output is asserted to indicate the status

of the VR has changed. Note

E

20

MP2

I/O

Note D

Multi-purpose pin-2 configurable as FAULT2, SMBAlert#, or IMON. Note F

21

AVSEN

I

Analog

Loop_A voltage sense inputs. AVSEN (+) and AVREF (-) are inputs to the

precision differential remote sense amplifier and should be connected to the

sense pins of the remote load. To attenuate high frequency noise coupled

onto the sense lines, it

is recommended that an RC filter (10Ω and 220pF)

be placed close to the controller.

22

AVREF

I

Analog

23

AIREF1

I

Analog

Loop_A phase #1 current sense inputs. The AIREF1 (-) and AISEN1 (+) pins

are used to differentially sense the corresponding channel current. The

sensed current is used for channel-to-channel current balancing, loadline

regulation, and over-current protection. Unused AIREFx/AISENx pins may

be left open or tied to ground.

24

AISEN1

I

Analog

25

AIREF2

I

Analog

Loop_A phase #2 current sense inputs. Refer to AIREF1/AISEN1

description.

26

AISEN2

I

Analog

27

AIREF3

I

Analog

Loop_A phase #3 current sense inputs. Refer to AIREF1/AISEN1 description

28

AISEN3

I

Analog

29

AIREF4

I

Analog

Loop_A phase #4 current sense inputs. Refer to AIREF1/AISEN1 description

30

AISEN4

I

Analog

31

AIREF5

I

Analog

Loop_A phase #5 current sense inputs. Refer to AIREF1/AISEN1 description

32

AISEN5

I

Analog

33

AIREF6

I

Analog

Loop_A phase #6 current sense inputs. Refer to AIREF1/AISEN1 description

34

AISEN6

I

Analog