User's Manual

T-0000-0004-V2.1: Using Mozart II
T-0000-0004-V2.1: Using Mozart II Page: 10 / 24
J2 ID ANA/DIG/POWER I/O DEFAULT Comment
4; TWI_SCL DIG O I2C-compatible clock line, 400
KHz. Internal 4k7 pull-up to
D3V3.
6; TWI_SDA DIG I/O I2C-compatible data line, 400
KHz. Internal 4k7 pull-up to
D3V3.
2; TWI_IRQ DIG I Interrupt capable line for
external I2C devices, such as
PCF8574. This line can be
shared between devices.
Open drain.
17; STANDBY DIG O Standby. Will raise when the
software goes to low-power
mode.
14; RSTn DIG I/O Main system reset. Can be
asserted by the module (if
reboot is required by
software), but also by an
external device.
7; SPI_CLK DIG O SPI Clock
5; SPI_MOSI DIG O SPI Data Out
1; SPI_MISO DIG I SPI Data In
3; SPI_CS DIG O SPI Select
11; MMI_IRQ DIG I Interrupt capable line for
additional MMI devices. Open
drain.
16; MMI_PWM ANA O Adjustable analog level line for
MMI devices, for instance
display backlight.
21-37; KP_RX DIG O Keypress X
18; MUTE DIG O Signal raises when audio
muting is required
20; EEXT_D DIG O Extender Data