BECKHOFF EtherCAT IP Core for Altera FPGAs v3.0.10 - Manual (Page 83)

IP Core Signals
Slave Controller – IP Core for Altera FPGAs III-71
8.6.3 SPI Slave Interface
Table 29 used with an SPI PDI.
Table 29: SPI PDI
Condition Name Direction Description
SPI PDI
PDI_SPI_CLK INPUT SPI clock
PDI_SPI_SEL INPUT SPI slave select
PDI_SPI_DI INPUT SPI slave data in (MOSI)
PDI_SPI_IRQ OUTPUT SPI interrupt
Tristate drivers inside
core (SPI
configuration)
PDI_SPI_DO OUTPUT SPI slave data out (MISO)
External tristate drivers
PDI_SPI_DO_OUT OUTPUT
SPI slave data out:
IP Core  µC
PDI_SPI_DO_ENA OUTPUT
0: disable output driver for
PDI_SPI_DO_OUT
1: enable output driver for
PDI_SPI_DO_OUT
8.6.4 Asynchronous 8/16 Bit µController Interface
Table 30 lists the signals used with both, 8 Bit and 16 Bit asynchronous µController PDI.
Table 30: 8/16 Bit µC PDI
Condition Name Direction Description
8/16 Bit µC PDI_uC_ADR[15:0] INPUT µC address bus
PDI_uC_nBHE INPUT µC byte high enable
PDI_uC_nRD INPUT µC read access
PDI_uC_nWR INPUT µC write access
PDI_uC_nCS INPUT µC chip select
PDI_uC_IRQ OUTPUT Interrupt
PDI_uC_BUSY OUTPUT PDI busy
PDI_uC_DATA_ENA OUTPUT 0: disable output driver for
PDI_uC_DATA_OUT
1: enable output driver for
PDI_uC_DATA_OUT
8.6.4.1 8 Bit µController Interface
Table 31 lists the signals used with an 8 Bit µC PDI.
Table 31: 8 Bit µC PDI
Condition Name Direction Description
Tristate drivers inside
core (µController
configuration)
PDI_uC_DATA[7:0] BIDIR µC data bus
External tristate drivers PDI_uC_DATA_IN[7:0] INPUT µC data bus:
µC  IP Core
PDI_uC_DATA_OUT[7:0] OUTPUT µC data bus:
IP Core  µC