Spectrum Digital TMS320DM6467 Technical Reference page 16

Spectrum Digital, Inc
2.1 EMIF Interfaces
An 8 bit EMIF with multiple chip selects divide up the address space and allow for
asynchronous accesses on the EVM. On board the CS2 is used for NAND Flash. This
interface is multiplexed with the PCI interface and daughter card interface. The figure
below illustrates this multiplexing. when the board is plugged into the PCI slot the CPLD
detects this condition and the EMIF is disabled. Furthermore the EMIF signals to the
daughter card are disabled. When the board is not plugged into a PCI slot the EMIF is
enabled and the NAN flash is available on CS2 along with the ATA drive.
When pulled high, the EMIF_MODE pin on connector DC_P3 turns the multiplexers for
daughter card usage.
2.2 Peripheral Interfaces
The TMS320DM6467 has several peripheral interfaces which allow the user to
interface to external devices. These interfaces are outlined in the following sections.
2.2.1 PCI Interface
The EVM supports a 33 Mhz. PCI interface. The board uses CBT multiplexers to
interface the PCI slot, EMIF, and daughter card interface to the TMS320DM6467
device. Furthermore the CBT's also provide compatibility with +5 volt PCI interfaces.
The board automatically configures the PCI enable signal on the TMS320DM6467
when the board is plugged into a PCI slot. When the PCI interface is enabled the NAND
Flash and ATA interface is disabled on board.
2.2.2 VLYNQ Interface
The TMS320DM6467 brings its internal VLYNQ interface out to a 50 pin Samtec FTSH
style connector JP1. The VLYNQ interface is implemented as a down stream peripheral
and supports four transmit and receive channels.
2-2 TMS320DM6467 EVM Technical Reference