CDB4955A Cirrus Logic Inc, CDB4955A Datasheet - Page 8

• Manufacturer Part Number: CDB4955A
• Description: EVALUATION BOARD FOR CS4955A
• Manufacturer: Cirrus Logic Inc

Specifications of CDB4955A

• Main Purpose: Video, Video Processing
• Embedded: Yes, Other
• Utilized Ic / Part: CS4955
• Primary Attributes: NTSC/PAL Digital Video Encoder
• Secondary Attributes: Graphical User Interface, RS-232 Interface
• Operating Frequency: 27 MHz
• Interface Type: RS-232, Composite, RGB, S-Video
• Operating Supply Voltage: 3.3 V, 5 V
• Software: Software Included
• Silicon Manufacturer: Cirrus Logic
• Silicon Core Number: CS4955
• Kit Application Type: Audio / Video / TV
• Application Sub Type: Encoder / Decoder
• Kit Contents: Evaluation Board
• Rohs Compliant: No
• For Use With/related Products: CS4954
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Contains lead / RoHS non-compliant

8
Switch
1-4
8
7
6
5
J34
J13
J15
J17
J20
J21
J22
J23
J24
J25
J27
J29
J31
S1
S2
J3
Clipping Input Signals
Pedestal Offset
NTSC/PAL Format
Not Used
Operating Modes
NOTE: OFF = 0
Purpose
ON = 1
GND Jumper for Dig Video
Input
High/Low Impedance Select
NOTE: All Jumpers must be in
the same position, namely
High or Low. Also, only
change impedance loading
with the power off.
DIP Switch for Stand Alone
Mode
Reset Switch
Table 2. CBD4954 Jumper/Switch Settings (Continued)
Position
Table 3. DIP Switch Settings
0000
1000
0100
0010
1010
0001
1001
0101
1100
0110
1110
1101
0011
1011
OFF
OFF
OFF
ON
ON
ON
-
Clipping On
Clipping Off (CS4954 Con Reg 6, bit 6)
Pedestal Offset = 7.5 IRE
Pedestal Offset = 0 IRE (CS4954 Con Reg 1, bit 1)
PAL-B Mode
NTSC-M Mode
Display Color Bars (70% Amp, 70% Sat)
Display Luma Bars (70% Amp, 70% Sat)
Display a Luma Step
Display an Aqua Screen
Display a Luma Ramp (1 bit/2 pixels)
Display a Luma Ramp (1 bit/ pixel)
Display a Luma Ramp (2 bit/ pixel)
Display a Luma Ramp (4 bit/ pixel)
Select Parallel Video Input as External Source
Select Serial Video Input as External Source
Display Video from Flash Block 1 (Cirrus Logo - NTSC)
Display Video from Flash Block 2 (Cirrus Logo - PAL)
Display Video from Flash Block 3
Select the D656 Bus Header(J32) as external video
input source.
(See
Jumpered
Open
High
Low
Table
-
Function Selected
3)
-
CDB4954A/55A
Gnd Connected
No Gnd Connect
High Impedance
Low Impedance
(See
Resets the
CDB4954A/55A
Table
3)