Specifications

Bluegiga Technologies Oy
Page 11 of 64
34
SPI_MISO
CMOS Input, weak internal
pull-down
SPI data input
35
SPI_MOSI
CMOS output, tristate,
weak internal pull-down
SPI data output
36
LED0
Open drain output
LED driver
Table 2: Terminal Descriptions
Pin
Number
Pin Name
Pin Type
Description
40
MIC_BIAS
Analog
41
AUDIO_IN_P_RIGHT
Analog
42
AUDIO_IN_N_RIGHT
Analog
44
AUDIO_IN_P_LEFT
Analog
45
AUDIO_IN_N_LEFT
Analog
46
AUDIO_OUT_N_RIGHT
Analog
47
AUDIO_OUT_P_RIGHT
Analog
49
AUDIO_OUT_N_LEFT
Analog
50
AUDIO_OUT_P_LEFT
Analog
26
PCM_IN / I2S IN
CMOS input, weak
internal pull-down
PCM or I2S data input
27
PCM_OUT / I2S_OUT
CMOS outptu, tristate,
weak internal pull-down
PCM or I2S data output
28
PCM_SYNC / I2S_WS
Bidirectional, weak
internal down
PCM sync or I2S word select. WT32i can
operate as a PCM/I2S master providing the
sync or as a slave receiving the sync
29
PCM_CLK / I2S_SCK
Bidirectional, weak
internal down
PCM or I2S clock. WT32i can operate as a
PCM/I2S master providing the clock or as
a PCM slave receiving the PCM clock. I2S
slave mode is not supported
Table 3: Audio Terminal Descriptions