GC4016 datasheet(66/83 Pages) TI

66 / 83 page

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August 27, 2001

GC4016 MULTI-STANDARD QUAD DDC CHIP

DATA SHEET REV 1.0

This document contains information which may be changed at any time without notice

7.8

GC4016 CONFIGURATION GENERATOR

A GC4016 configuration generator is available from Graychip in the form of a “C” program which can be obtained via email

or the web. The program is described below.

Usage: cmd4016 [-gc100 | -TI | -sim] <config_file>

where <config_file> is a file containing a list of control register settings of the form:

print [gc100 | TI | sim ]

channel [0-3]

copy_channel [0-3]

cfir_coef <file>

pfir_coef <file>

res_coef <file>

where <parameter> is one of the gc4016 control register fields identified in the datasheet or quick reference guide.

Cmd4016 reads the file of control register settings and creates output files which summarize the control register values

needed to program the chip. The program creates config_file.tbl, which contains a summary of all of the control register settings

in a table format.

A second file is created which is in a format suitable for programming the chip. Three formats are supported: gc100, TI, and

sim. The format is either chosen on the command line, or is chosen using the “print [gc100 | TI | sim]” command. These options

create config_file.gc100, config_file.ti or config_file.sim output files.

The gc100 format is used by the gc100 test card interface. This format contains commands of the form:

write <address> <data>

write_block <starting_address> <data0> <data1> <data2> ...

The TI format is for use with the 4 bit addressing mode and contains commands of the form:

The sim format is used by the “ifan” simulator and contains commands of the form:

writec <address> <data>

The “4_bit_address” mode is required in the TI mode, it is illegal in the gc100 or sim modes. A warning will be printed and

the appropriate 4_bit_address mode will be forced if this is violated. cmd4016 then checks the configuration for sanity and

calculates the gains throughout the chip.

Example configuration files can also be provided by email, or downloaded from the web.

GC4016 Datasheet(PDF) 66 Page - Texas Instruments