GC5316_14 Datasheet, PDF (48/76 Pages) Texas Instruments – HIGH-DENSITY DIGITAL DOWNCONVERTER AND UPCONVERTER

GC5316
SLWS154A − JANUARY 2004 − REVISED MARCH 2004
www.ti.com
Table 4. Receive Common Syncs
SYNC NAME
ssel_ddc_counter
ssel_ddc
ssel_ddc_tadj
ssel_ddc_pmeter
ssel_ddc_agc
ssel_ddc_pser
PURPOSE
Initializes the receive sync counter
Initializes the receive ADC samples interface and clock gen circuits (including CIC decimation)
Updates the delay adjust register
Initializes the receive power meter
Updates the AGC registers
Initializes the receive serial interface
Table 5. Receive Channel Syncs
SYNC NAME
ssel_ddc_nco
ssel_ddc_freq
ssel_ddc_phase
Resets the NCO accumulator
Updates the NCO freq registers
Updates the NCO phase register
PURPOSE
4.5 Initialization
Chip initialization procedures are available from Texas Instruments.
4.6 GC5316 Board Diagnostics
The GC5316 contains built-in test features that can be used to confirm that the chip is operating correctly and to help
users debug their boards and systems that conatin the GC5316.
The diagnositc and board test procedures can be download from the web at www.ti.com as the GC5316 Diagnostics
Designer’s Kit.
5 GC5316 Programming
The cmd5016 program, its user’s guide, and example configuration files can be downloaded from the web at
www.ti.com as the GC5316 Configuration Designer’s Kit.
The GC5316 contains over 7,000 control and coefficient registers that must be written to in order to fully configure
the chip. Rather than program each of these registers individually, Texas Instruments supplies a configuration
program called cmd5316 which accepts top-level configuration information for the chip and then generates the full
register map and control writes required to program the chip.
The configuration controls have been defined in the functional description of each section of the chip. The following
tables summarize these controls and identify which register and which bits within the registers they occupy.
Each control register table has a column identifying whether the variable must be specified by the user in cmd5316
(U), is typically left at the default value and does not need to be specified (D), is computed by cmd5316 and should
not be set (C), or is for expert use only (E).
Tables are also included that show the top level page mapping for the chip controls, the status and measurement
result registers, and additional controls that are used with the GC101/GC5316 DIMM evaluation platform.
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