Smart Module Series
SA800U-WF Hardware Design
SA800U-WF_Hardware_Design 32 / 106
SMB_EN_CHG
J3-9
DO
SMB1355
parallel charging
enable
If unused, keep
these pins open.
SMB_STAT
J3-10
DI
SMB1355
parallel charging
status indicator
SMB_THERM
J3-17
AI
SMB1355
parallel charging
temperature
detect
SMB_CS_P
J3-15
AI
SMB1355
parallel charging
current sense (+)
SMB_CS_M
J3-14
AI
SMB1355
parallel charging
current sense (-)
Audio Interfaces
Pin Name
Pin No.
I/O
Description
DC Characteristics Comment
CODEC_RST
J2-90
DO
Codec reset
V
OL
max = 0.45 V
V
OH
min = 1.35 V
1.8 V power
domain.
CODEC_INT1
J2-91
DI
Codec
interrupt 1
V
IL
max = 0.63 V
V
IH
min = 1.17 V
CODEC_INT2
J2-93
DI
Codec
interrupt 2
CODEC_SPI_CS
J2-96
DO
SPI chip select
for codec
V
OL
max = 0.45 V
V
OH
min = 1.35 V
CODEC_SPI_CLK
J2-92
DO
SPI clock for
codec
CODEC_SPI_MOSI
J2-94
DO
SPI master-out
slave-in for
codec
CODEC_SPI_MISO
J2-89
DI
SPI master-in
salve-out for
codec
V
IL
max = 0.63 V
V
IH
min = 1.17 V
WCD_CLK
J2-43
DO
WCD clock
V
OL
max = 0.45 V
V
OH
min = 1.35 V
SLIMBUS_CLK
J2-51
DO
SLIMbus clock
SLIMBUS_DATA0
J2-47
DIO
SLIMbus data
bit 0
V
IL
max = 0.63 V
V
IH
min = 1.17 V
V
OL
max = 0.45 V
V
OH
min = 1.35 V
SLIMBUS_DATA1
J2-49
DIO
SLIMbus data
bit 1
