Altera Stratix II GX EP2SGX90 Transceiver Signal Integrit Manual de usuario descargar pdf (Pagina 24)

2–14 Reference Manual Altera Corporation

Stratix II GX EP2SGX90 Transceiver Signal Integrity Development Board May 2006

Interfaces

USB Interface

The USB interface to the board provides a communication port to a host

PC. A USB physical connection is used to enable laptops without RS232

ports to communicate with the demo board.

To simplify the USB interface, the board contains a FTDI FT2232L USB

universal asynchronous receiver/transmitter (UART) circuit. The UART

eliminates the need for full USB software and hardware implementation.

In addition, the USB UART design allows the software to be designed as

if writing directly to the host PC’s COM port, which eliminates the need

for designing a USB software driver (see Figure 2–7).

Transceiver Block 2,

4 Channels

TX_P4 J43 AB4

TX_N4 J45 AB5

RX_P4 J42 AB1

RX_N4 J44 AB2

TX_P3 J39 Y4

TX_N3 J40 Y5

RX_P3 J38 Y1

RX_N3 J41 Y2

TX_P2 J32 N4

TX_N2 J33 N5

RX_P2 J30 N1

RX_N2 J31 N2

TX_P1 J36 R4

TX_N1 J37 R5

RX_P1 J34 R1

RX_N1 J35 R2

Transceiver Block 3,

1 Channel

TX_P5 J47 AF4

TX_N5 J48 AF5

RX_P5 J49 AF1

RX_N5 J46 AF2

Table 2–8. Transceiver Block Corresponding Signals, SMA Designator, and

FPGA Pin (Part 2 of 2)

Block Signal

SMA Reference

Designator

Stratix II GX Pin

1 2 ... 19 20 21 22 23 24 25 26 27 28 29 ... 39 40

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Altera Stratix II GX EP2SGX90 Transceiver Signal Integrit Manual de usuario Pagina 24

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