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WM1811A Datasheet(PDF) 216 Page - Wolfson Microelectronics plc

Part # WM1811A
Description  Multi-Channel Audio Hub CODEC for Smartphones
PDF  328 Pages
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Manufacturer  WOLFSON [Wolfson Microelectronics plc]
Direct Link  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM1811A Datasheet(HTML) 216 Page - Wolfson Microelectronics plc

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WM1811A
Production Data
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PD, November 2013, Rev 4.1
216
Typical Power-On Reset parameters for the WM1811A are defined in Table 132.
SYMBOL
DESCRIPTION
TYP
UNIT
Vpora_on
Power-On threshold (AVDD2)
1.15
V
Vpora_off
Power-Off threshold (AVDD2)
1.14
V
Vpord_on
Power-On threshold (DCVDD)
0.56
V
Vpord_off
Power-Off threshold (DCVDD)
0.55
V
TPOR
Minimum Power-On Reset period
100
ns
Table 132 Typical Power-On Reset Parameters
Table 133 describes the status of the WM1811A digital I/O pins when the Power On Reset has
completed, prior to any register writes. The same conditions apply on completion of a Software Reset
(described in the “Software Reset and Device ID” section).
PIN NO
NAME
TYPE
RESET STATUS
DBVDD1 power domain
D5
SPKMODE
Digital Input
Pull-up to DBVDD1
A4
LDO1ENA
Digital Input
Pull-down to DGND
F3
ADDR
Digital Input
Pull-down to DGND
D6
LDO2ENA
Digital Input
Pull-down to DGND
H2
SCLK
Digital Input
Digital input
H3
SDA
Digital Input/Output
Digital input
F1
MCLK1
Digital Input
Digital input
F2
MCLK2
Digital Input
Pull-down to DGND
G3
BCLK1
Digital Input/Output
Digital input
G1
LRCLK1
Digital Input/Output
Digital input
J1
ADCLRCLK1/GPIO1
Digital Input/Output
Digital input
H1
DACDAT1
Digital Input
Digital input
F4
ADCDAT1
Digital Output
Digital output
DBVDD2 power domain
K1
BCLK2
Digital Input/Output
Digital input,
Pull-down to DGND
J3
LRCLK2
Digital Input/Output
Digital input,
Pull-down to DGND
G4
DACDAT2
Digital Input
Pull-down to DGND
H4
ADCDAT2
Digital Output
Digital output
DBVDD3 power domain
K4
GPIO11/BCLK3
Digital Input/Output
Digital input,
Pull-down to DGND
G5
GPIO10/LRCLK3
Digital Input/Output
Digital input,
Pull-down to DGND
K3
GPIO8/DACDAT3
Digital Input/Output
Digital input,
Pull-down to DGND
J4
GPIO9/ADCDAT3
Digital Input/Output
Digital input,
Pull-down to DGND
MICBIAS1 power domain
A8
DMICCLK
Digital Output
Digital output
C8
IN2LN/DMICDAT
Analogue Input/Digital Input
Analogue input
Table 133 WM1811A Digital I/O Status in Reset
Note that the dual function IN2LN/DMICDAT pin defaults to IN2LN (analogue input) after Power On
Reset is completed. The IN2LN function is referenced to the AVDD1 power domain.



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