CDB42L73 Datasheet, PDF (9/36 Pages) Cirrus Logic – Ecaluation Borard for the CS42L73

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
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