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Cirrus Logic Crystal SDB4954A Manual

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Evaluation Board for CS4954/55
Features
l
Demonstrates recommended layout and
grounding practices
l
Supports both parallel and serial digital
video input
l
On-board test pattern generation
l
Supports NTSC/PAL video formats
l
3.3 V or 5 V operation
l
Composite, S-Video, and RGB outputs
l
Supports Standalone mode via onboard
DIP switch
l
RS232 interface with PC
l
Single 6-9 V external DC power supply
l
Additional op-amps with open pads for
prototyping additional filters
I
Reset
Reset
Switch
D
TXD
B
RXD
9
PC SERIAL
INTERFACE
Preliminary Product Information
P.O. Box 17847, Austin, Texas 78760
(512) 445 7222 FAX: (512) 445 7581
http://www.cirrus.com
POWER
Regulator
+3.3V
INLET
3.3V
6.5 - 10VDC
or
+5V
Regulator
+5V
1
2
MPU
3
PROGRAM
4
HEADER
5
6
7
8
RESET-
Motorola 908
PROG
Microcontroller
TX
RX
RS-232
Interface
BUFFER
Hdr -
16PIN
SDA_O
SCL
This document contains information for a new product.
Cirrus Logic reserves the right to modify this product without notice.
Description
The CDB4954A/55A board allows fast evaluation of the
features of the CS4954 digital video encoders. The
board may also be configured to accept external TTL
level timing and data signals for use during system
development.
Also, to simplify the demonstration of the features of the
CS4954, the CDB4954A/55A is equipped with an on-
board microcontroller and pre-programmed FLASH
memory to facilitate configuration and evaluation of the
CS4954 digital video encoder.
ORDERING INFORMATION
CDB4954A
CDB4955A
CCIR 656 SERIAL/ PARALELL
INPUTS
DB25
BNC
656_IN
PLD
EEPROM
SMPTE-259M
ECL
Interface
RECEIVER
ISP
656
54MHZ
CTL
Addr
Data
RESET-
RESET-
FPGA
CTL
ALE
Addr
WR-
Data
RD-
RESET-
A/D7:0
245
656
TTX
HS,VS,
27MHz
DATA
/2
FIELD
/8
TTXD,
R
TTXRQ
G
ADDR
RD-
B
WR-
DAT<7..0>
RST-
Y
CS4954
C
SDA
CVBS
SCL
TEST
Copyright  Cirrus Logic, Inc. 2001
(All Rights Reserved)
CDB4954A/55A
Evaluation Board
Evaluation Board
OSC
SDRAM
PROGRAMMING
ENABLE
JUMPER
Flash
Hdr -
16PIN
SELECTABLE
HI/LOW
IMPEDANCE
FILTERS
OUT
FILT
OUT
RCA
FILT
CONNECTORS
OUT
FILT
OUT
DIN4
FILT
OUT
CONN.
FILT
RCA
OUT
u
CONNECTOR
FILT
4K
1%
MAY '01
DS278DB2
1

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Summary of Contents for Cirrus Logic Crystal SDB4954A

  • Page 1 FILT TEST This document contains information for a new product. Preliminary Product Information Cirrus Logic reserves the right to modify this product without notice. Copyright  Cirrus Logic, Inc. 2001 MAY ‘01 P.O. Box 17847, Austin, Texas 78760 (All Rights Reserved)

  • Page 2: Table Of Contents

    (electronic, mechanical, photographic, or otherwise) without the prior written consent of Cirrus Logic, Inc. Items from any Cirrus Logic website or disk may be printed for use by the user. However, no part of the printout or electronic files may be copied, reproduced, stored in a retrieval system, or transmitted, in any form or by any means (electronic, mechanical, photographic, or otherwise) without the prior written consent of Cirrus Logic, Inc.
  • Page 3 CDB4954A/55A LIST OF TABLES Table 1. System Connections ........................ 7 Table 2. CBD4954 Jumper/Switch Settings................... 7 Table 3. DIP Switch Settings ......................... 8...

  • Page 4: Cdb4954A/55A System Overview

    CS4954/55 NTSC/PAL Digital Video Encoder ICs without a PC (i.e. in the standalone mode), use the from Cirrus Logic to be evaluated with a variety of followings to set up the board using the 8 position internal and external video signals. DIP switches on dip switch.

  • Page 5: Actions Menu

    CDB4954A/55A Figure 1. CDB4954A/55A Evaluation Board Interface Figure 2. Register Edit Box shown in Figure 2. You can directly enter the hex be downloaded to the FLASH on the evaluation value for all bits in the register and click the OK board for storage and later replay, or downloaded button.

  • Page 6: Video Input Source Option

    CDB4954A/55A 2.2.2.2 Video Input Source Option -f: This parameter shows the FPGA Register Val- ues tab. This allows FPGA registers to be manipu- This option selects the video source which will lated directly. Note that the FPGA Register is NOT serve as input for the CS4954/55.

  • Page 7: Figure 3. 300 Ω Filters

    CDB4954A/55A 22 pF 22 pF TO 75 Ω LOAD ENCODER DRIVER ENCODER 2.2 µH 1.8 µH 75 Ω 330 pF 270 pF 300 Ω 330pF 270pF 300Ω Figure 4. 75 Ω Filters Figure 3. 300 Ω Filters Connector Input/Output Description Input 6 - 9V DC Power Supply Input...
  • Page 8 CDB4954A/55A GND Jumper for Dig Video Jumpered Gnd Connected Input Open No Gnd Connect High/Low Impedance Select High High Impedance Low Impedance NOTE: All Jumpers must be in the same position, namely High or Low. Also, only change impedance loading with the power off.
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