AN 729: Implementing JESD204B IP Core System Reference Design with Nios II Processor

ID 683844
Date 5/04/2015
Public
Document Table of Contents

1.11. Customize the C code

You can customize the behavior of the C code via a set of user parameters found in the main.h header file.

Table 12.  User Parameters in main.h

Parameter

Description

DEBUG_MODE

Set to 1 to print debug messages, else set to 0.

PRINT_INTERRUPT_MESSAGES

Set to 1 to print JESD204B error interrupt messages, else set to 0.

CONFIG_SPI

Set to 1 to configure external converters via SPI interface at start of main.c execution, else set to 0.

PATCHK_EN

Set to 1 when test pattern checker is included in the initial design configuration, else set to 0.

ALTERA_TRANSPORT_LAYER

Set to 1 when using Altera transport layer, else set to 0.

BONDED

Set to 1 when transceivers configured in bonded mode, set to 0 when transceivers configured in unbonded mode.

Note: Serial data rate reconfiguration is only supported in unbonded mode (BONDED=0).

DATAPATH

Set to indicate JESD204B IP configuration:

1 – TX datapath only

2 – RX datapath only

3 – Duplex datapath (TX and RX datapath)

DATA_RATE_LINK_n

Set to indicate the initially configured serial data rate of link n in Mbps (for example, to set link 0 to 6144 Mbps, DATA_RATE_LINK_0=6144). For multi-link scenarios, add additional DATA_RATE_LINK_n parameters to the DR_init[] array in main.c.

DATA_RATE_MIN

Set to indicate the minimum serial data rate (in Mbps) supported by the JESD204B IP core for the following device families:

  • Arria V GZ, Arria 10, Stratix V: 2000
  • Arria V: 1000

MAX_LINKS

Set to indicate the number of links in the design (for example, for dual link, set MAX_LINKS=2)

Note: When using the design as-is, the maximum value of MAX_LINKS is 16. To increase the limit, redesign the address map in QSYS.

LINE_BUFFER

Sets the maximum number of characters that user can enter on command line.

MAX_NUM_OPTIONS

Sets the maximum number of options per command.

MAX_OPTIONS_CHAR

Sets the maximum number of characters per command option

XCVR_CFG_FILES_PER_LINK

Sets the maximum number of transceiver configuration files per link.

XCVR_PLL_PER_LINK

Sets the maximum number of transceiver TX PLLs (ATX PLL) per link. Current address map supports up to four PLLs. Refer to the Arria 10 Transceiver PHY User Guide for more details on the maximum number of TX transceiver PLLs required.

Note: When using the design as-is, the maximum value of XCVR_PLL_PER_LINK is 4. To increase the limit, redesign the address map in QSYS.

F1_FRAMECLK_DIV

Set to the F1_FRAMECLK_DIV parameter as defined in the top level HDL file (jesd204b_ed.sv).

F2_FRAMECLK_DIV

Set to the F2_FRAMECLK_DIV parameter as defined in the top level HDL file (jesd204b_ed.sv).

You can further customize the software behavior by directly modifying the C code. A full description of the functions and macros used in the design is given at the end of this document.

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