Signal Descriptions
MPC5510 Microcontroller Family Reference Manual, Rev. 1
2-24
Freescale Semiconductor
Preliminary
2.7.5
Port E Pins
2.7.5.1
PE0 — GPIO (PE[0]) / DSPI_A Peripheral Chip Select (PCS_A[2]) / eMIOS
Channel (eMIOS[5]) / MLB Clock (MLBCLK)
PE[0] is a GPIO pin. PCS_A[2] is a peripheral chip select output pin for the DSPI A module. eMIOS[5]
is an output-only channel pin for the eMIOS200 module. MLBCLK is the clock pin for the emulated MLB
module.
2.7.5.2
PE1 — GPIO (PE[1]) / DSPI_A Peripheral Chip Select (PCS_A[1]) / eMIOS
Channel (eMIOS[4]) / MLB Signal In / Signal (MLBSI / MLBSIG)
PE[1] is a GPIO pin. PCS_A[1] is a peripheral chip select output pin for the DSPI A module. eMIOS[4]
is an output-only channel pin for the eMIOS200 module. In a 3-pin MLB interface, MLBSIG is the
bidirectional signal line that transfers bus management data to/from the MOST network controller. In a
5-pin interface, MLBSI carries signal line data from the MOST network controller to the emulated MLB
module.
2.7.5.3
PE2 — GPIO (PE[2]) / DSPI_A Peripheral Chip Select (PCS_A[0]) / eMIOS
Channel (eMIOS[3]) / MLB Data In / Data (MLBDI / MLBDAT)
PE[2] is a GPIO pin. PCS_A[0] is a peripheral chip select output pin for the DSPI A module. eMIOS[3]
is an output-only channel pin for the eMIOS200 module. In a 3-pin MLB interface, MLBDAT is the
bidirectional data line that transfers user data to/from the MOST network controller. In a 5-pin MLB
interface, MLBDI carries user data from the MOST network controller to the emulated MLB module.
2.7.5.4
PE3 — GPIO (PE[3]) / DSPI_A Clock (SCK_A) / eMIOS Channel
(eMIOS[2]) / MLB Signal Out / Level Shifter Enable (MLBSO /
MLBSIG_BUFEN)
PE[3] is a GPIO pin. SCK_A is the SPI clock pin for the DSPI A module. eMIOS[2] is an output-only
channel pin for the eMIOS200 module. In a 3-pin MLB interface, MLBSIG_BUFEN controls the external
level shifter for the MLBSIG pin. In a 5-pin MLB interface, MLBSO carries signal data from the emulated
MLB module to the MOST network controller.
2.7.5.5
PE4 — GPIO (PE[4]) / DSPI_A Data Output (SOUT_A) / eMIOS Channel
(eMIOS[1]) / MLB Data Out / Level Shifter Enable (MLBDO /
MLBDAT_BUFEN)
PE[4] is a GPIO pin. SOUT_A is the data output pin for the DSPI A module. eMIOS[1] is an output-only
channel pin for the eMIOS200 module. In a 3-pin MLB interface, MLBDAT_BUFEN controls the external
level shifter for the MLBDAT pin. In a 5-pin MLB interface, MLBDO carries user data from the emulated
MLB module to the MOST network controller.