GPIO, TDM, UART, and Timer Signals
MSC8122 Technical Data, Rev. 13
Freescale Semiconductor
1-19
GPIO11
TDM2TDAT
IRQ9
ETHRX_ER
ETHTXD
Input/ Output
Input/ Output
Input
Input
Output
General-Purpose Input Output 11
One of 32 GPIO pins used as GPIO or as one of two dedicated inputs or one of two dedicated outputs. For
details, refer to the
MSC8122
Reference Manual
GPIO programming model.
TDM2 Serial Transmitter Data
The transmit data signal for TDM 2. As an output, this can be the DATA_D data signal for TDM 2. For
configuration details, refer to the
MSC8122
Reference Manual
chapter describing TDM operation.
Interrupt Request 9
One of fifteen external lines that can request a service routine, via the internal interrupt controller, from the
SC140 core.
Ethernet Receive Data Error
In MII and RMII modes, indicates a receive data error.
Ethernet Transmit Data
In SMII, used as the Ethernet transmit data line.
GPIO12
TDM2RSYN
IRQ10
ETHRXD1
ETHSYNC
Input/ Output
Input/ Output
Input
Input
Output
General-Purpose Input Output 12
One of 32 GPIO pins used as GPIO or as one of two dedicated inputs or one of two dedicated outputs. For
details, refer to the
MSC8122
Reference Manual
GPIO programming model.
TDM2 Receive Frame Sync
The receive sync signal for TDM 2. As an input, this can be the DATA_B data signal for TDM 2. For
configuration details, refer to the
MSC8122
Reference Manual
chapter describing TDM operation.
Interrupt Request 10
One of fifteen external lines that can request a service routine, via the internal interrupt controller, from the
SC140 core.
Ethernet Receive Data 1
Bit 1 of the Ethernet receive data (MII and RMII mode).
Ethernet Sync Signal
In SMII mode, this is the Ethernet sync signal input.
GPIO13
TDM2RCLK
IRQ11
ETHMDC
Input/ Output
Input/ Output
Input
Output
General-Purpose Input Output 13
One of 32 GPIO pins used as GPIO or as one of two dedicated inputs or one of two dedicated outputs. For
details, refer to the
MSC8122
Reference Manual
GPIO programming model.
TDM2 Receive Clock
The receive clock signal for TDM 2. As an input, this can be the DATA_C data signal for TDM 2. For
configuration details, refer to the
MSC8122
Reference Manual
chapter describing TDM operation.
Interrupt Request 11
One of fifteen external lines that can request a service routine, via the internal interrupt controller, from the
SC140 core.
Ethernet Management Clock
Used for the MDIO reference clock for MII, RMII, and SMII modes.
Table 1-7.
GPIO, TDM, UART, Ethernet, and Timer Signals (Continued)
Signal Name
Type
Description