HSP50016-EV 查看數據表（PDF） - Intersil

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HSP50016-EV

DDC Evaluation Platform

Intersil 

HSP50016-EV

output data and writes it into the output file as two’s

complement complex or real data. The configuration of the I,

Q, IQCLK and IQSTB pins is transparent to the user,

provided that none of the pins are three-stated and the DDC

Control Word fields Real Output, HDF Decimation Rate,

Number of Output Bits, I followed by Q and IQCLK rate are

compatible with each other. All valid output modes are

supported.

File based I/O is activated by using the space bar to toggle

the “check mark” symbol in the window proceeding the input

and output file identifiers in the control panel's file I/O

Section. If either file input or output is activated, the

respective file name must be entered in the window to the

right of the file identifier. File input or output may be disabled

at any time by toggling the respective “check mark”.

Note: File I/O is only valid when either the ‘Manual CLK’

or ‘Port CLK’ clocking modes are selected and it is

disabled if other clocking modes are specified.

Input and output data files are ASCII files whose format is

described in Appendix A. There is no limitation to the input

and output file size. Care must be taken if file output is

specified since data is collected in the file until file output is

deactivated or the DDCCTRL Program is exited.

TAP I/O files are similar, except that the TAP is available

regardless of the CLK setting. The format for the TAP input

and output files is given in Appendix B.

HSP50016 Data Inputs

The data window to the left of the HSP50016 icon is used to

specify hexadecimal values which drive the DDC's data

inputs DATA0-15. Data is entered into this window in

hexadecimal format starting with the most significant digit.

The contents of a particular data window may be edited by

following the window editing instructions in Appendix C.

If file input is selected, the data input is driven with data from

the specified file. On each clock the data window is updated

with the data sample down loaded from the file. In this mode

the data input window may not be manually updated.

HSP50016 Data I&Q Outputs

There are 32 bits available at P2. The control software for

the evaluation board performs a serial read via the PC Port.

Control Signals

The control signal portion of the control panel is used to

define the state of the DDC control signals RESET and

IQSTRT. The logical state of a control signal is set by using

the space bar to toggle the signal state in the window

preceding the specified control signal. When the evaluation

board is in Port CLK mode and RESET is set either low or

high, the DDC is automatically clocked five times. See the

HSP50016 Data Sheet for a complete description of the

control signals. RESET must be toggled low and high

once after power up. The software DOES NOT do this

automatically.

Control Words

In the lower left hand corner of the control panel is a data

window which contains the hexadecimal values loaded into

the HSP50016's eight control words. The contents of a

particular control word may be updated by moving the cursor

to the data window which is to be modified, selecting the

control word by pressing the space bar (which moves the

check mark to the desired control word) and depressing the

F4 key. A submenu pops up which parses that control word

into its various fields so that they may be examined or

modified individually.

The value entered into the data window is down loaded to

the HSP50016 and the submenu disappears when the user

depresses the F2 key. Leaving the window via the <Esc> key

ignores any changes made and returns to the main control

panel screen. If the update bit has been set, the new values

will update the configuration of the DDC and this will be

reflected in the submenu screen.

Note that all values displayed in this window are the last

values written to the control words, as opposed to

having been read from the DDC itself.

Help

Help windows are provided as a source of information for

control panel usage. The help window is activated by the F1

function key, and contains information based on the window

which is currently active.

Command Line Interface

As an alternative to the control panel, a command line

interface is provided which allows the user to control the

HSP50016-EV by issuing commands from the DOS prompt.

The commands perform basic I/O and configuration

functions by up or down loading data to the HSP50016

through the HSP50016-EV. The Command Line Program

has the following usage:

DDCCMD [Command] [ARG 1] [ARG 2] [ARG 3]

The Command specifies the action to be taken, and the

Arguments (ARG1, ARG2) represent additional data

required by the command. For example, to load Control

Word 1 with a value of 200000005(HEX) and set the update

bit, the user would type:

DDCCMD WCW 1 1 200000005 <Enter>

A summary of the command set is given in Table 2.

When several commands are to be entered consecutively,

the user may initiate the interactive command mode by

entering:

DDCCMD <Enter>

All commands are then entered as before, except that

control does not return to DOS between commands, and it is

not necessary to enter DDCCMD for each command. Note

5

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