CDB42L73 datasheet(9/36 Pages) CIRRUS

9 / 36 page

DS882DB1

CDB42L73

JUMPER PIN

BLOCK

PURPOSE

POSITION

FUNCTION SELECTED

J50

+5 V

+5 V main supply

select

[*]

+5V EXT

USB

+5 V supply source from J1

+5 V supply source from USB

J10

VA CS42L73 VA supply

source select

VA EXT

[*]

+1.8 V LDO

+1.8 V BUCK

CS42L73 VA supply = J3

CS42L73 VA supply= 1.8 V derived from LDO

CS42L73 VA supply= 1.8 V derived from switching buck

regulator

J11

VL CDB42L73 VL supply

source select

(see also J25)

VL EXT

[*]

+1.8 V LDO

+1.8 V BUCK

CDB42L73 VL supply = J4

CDB42L73 VL supply = 1.8 V derived from LDO

CDB42L73 VL supply = 1.8 V derived from switching buck

regulator

J12

VCP CS42L73 VCP sup-

ply source select

VCP EXT

[*]

+1.8 V LDO

+1.8 V BUCK

CS42L73 VCP supply = J5

CS42L73 VCP supply = 1.8 V derived from LDO

CS42L73 VCP supply = 1.8 V derived from switching buck

regulator

J13

VD_FILT

CS42L73 VD_FILT

supply source select

VD_FILT_EXT

[*]

NORM

CS42L73 digital core supply = J6

CS42L73 digital core supply = internally generated

J14

VP CS42L73 VP supply

source select

VP EXT

[*]

+5 V EXT

BATT

CS42L73 VP supply = J7

CS42L73 VP supply = J1

CS42L73 VP supply = J49

J25

BOARD VL

CDB42L73 board

peripheral and

CS42L73 VL common

supply toggle

+1.8 V LDO

[*]

NORMAL

Board peripheral VL is supplied by 1.8 V LDO while

CS42L73 VL = J11

Board peripheral VL and CS42L73 VL = J11

J27

IVA CS42L73 VA current

measurement

[*]

Shunted

Open

0.1

 current measurement resistor is shorted

0.1

 current measurement resistor is in series with

CS42L73 VA, allowing user to measure current draw of VA

supply for power consumption calculations.

J42

IVL CS42L73 VL current

measurement

[*]

Shunted

Open

0.1

 current measurement resistor is shorted

0.1

 current measurement resistor is in series with

CS42L73 VL, allowing user to measure current draw of VL

supply for power consumption calculations.

J28

IVCP CS42L73 VCP cur-

rent measurement

[*]

Shunted

Open

0.1

 current measurement resistor is shorted

0.1

 current measurement resistor is in series with

CS42L73 VCP, allowing user to measure current draw of

VCP supply for power consumption calculations.

J40

IVD_FILT

CS42L73 current

measurement

[*]

Shunted

Open

0.1

 current measurement resistor is shorted

0.1

 current measurement resistor is in series with

CS42L73 VD_FILT, allowing user to measure current draw

of digital core supply for power consumption calculations.

J41

IVP

CS42L73 current

measurement

[*]

Shunted

Open

0.1

 current measurement resistor is shorted

0.1

 current measurement resistor is in series with

CS42L73 VP, allowing user to measure current draw of VP

supply for power consumption calculations.

J15

1.8V BUCK EN +1.8 V switching buck

regulator enable/dis-

able

[*]

DIS

Disables the +1.8 V switching buck regulator

Enables the +1.8 V switching buck regulator

1.8V BUCK

SOURCE

+1.8 V switching buck

regulator power sup-

ply source

BATT

[*]

+5V

+1.8V switching buck regulator power supply source = J49

+1.8V switching buck regulator power supply source = J50

CDB42L73 Datasheet(PDF) 9 Page - Cirrus Logic

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