CDB42L73 View Datasheet(PDF) - Cirrus Logic

Part Name

Description

Manufacturer

CDB42L73

Evaluation Board for the CS42L73

Cirrus Logic 

CDB42L73

JUMPER PIN

BLOCK

PURPOSE

POSITION

FUNCTION SELECTED

J50

+5 V +5 V main supply [*]

+5V EXT +5 V supply source from J1

select

USB +5 V supply source from USB

J10

VA CS42L73 VA supply

VA EXT CS42L73 VA supply = J3

source select [*] +1.8 V LDO CS42L73 VA supply= 1.8 V derived from LDO

+1.8 V BUCK CS42L73 VA supply= 1.8 V derived from switching buck

regulator

J11

VL CDB42L73 VL supply

VL EXT CDB42L73 VL supply = J4

source select [*] +1.8 V LDO CDB42L73 VL supply = 1.8 V derived from LDO

(see also J25)

+1.8 V BUCK CDB42L73 VL supply = 1.8 V derived from switching buck

regulator

J12

VCP CS42L73 VCP sup-

VCP EXT CS42L73 VCP supply = J5

ply source select [*] +1.8 V LDO CS42L73 VCP supply = 1.8 V derived from LDO

+1.8 V BUCK CS42L73 VCP supply = 1.8 V derived from switching buck

regulator

J13

VD_FILT CS42L73 VD_FILT VD_FILT_EXT CS42L73 digital core supply = J6

supply source select [*]

NORM CS42L73 digital core supply = internally generated

J14

VP CS42L73 VP supply

VP EXT CS42L73 VP supply = J7

source select [*] +5 V EXT CS42L73 VP supply = J1

BATT CS42L73 VP supply = J49

J25

BOARD VL CDB42L73 board

+1.8 V LDO Board peripheral VL is supplied by 1.8 V LDO while

peripheral and

CS42L73 VL = J11

CS42L73 VL common [*]

NORMAL Board peripheral VL and CS42L73 VL = J11

supply toggle

J27

IVA CS42L73 VA current [*]

Shunted 0.1  current measurement resistor is shorted

measurement

Open 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 [*]

Shunted 0.1  current measurement resistor is shorted

measurement

Open 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- [*]

Shunted 0.1  current measurement resistor is shorted

rent measurement

Open 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 [*]

Shunted 0.1  current measurement resistor is shorted

measurement

Open 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 [*]

Shunted 0.1  current measurement resistor is shorted

measurement

Open 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

EN Enables the +1.8 V switching buck regulator

J8

1.8V BUCK +1.8 V switching buck

BATT +1.8V switching buck regulator power supply source = J49

SOURCE regulator power sup- [*]

+5V +1.8V switching buck regulator power supply source = J50

ply source

DS882DB1

9

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