CRD-4412A Cirrus Logic Inc, CRD-4412A Datasheet - Page 7

• Manufacturer Part Number: CRD-4412A
• Description: Audio Modules & Development Tools EvalBd 30W Qd Hlf- Brdg Dig Amp Pwr Stg
• Manufacturer: Cirrus Logic Inc

Specifications of CRD-4412A

• Description/function: Audio Amplifiers
• Operating Supply Voltage: 18 V
• Product: Audio Modules
• For Use With/related Products: CS4412A
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

DS786RD1
4. SYSTEM CONNECTIONS AND JUMPERS
Connector Name
Connector
7, 9, 11, 13, 15, 16
Connector
Speaker
17, 18, 19, 20
Name
CRD4412 I/F
Pin
10
12
14
• A separate ground plane with a solid electrical connection to the chassis, and which surrounds the
• Make use of source termination resistors on all digital signals whose traces are longer than about
It is extremely critical that the layout of the power amplifier section of the CRD4412A be copied as exactly
as possible to assure best RF/EMI performance.
1
2
3
4
5
6
8
-
-
-
components should be as close as practical to the output pins to maximize their effectiveness.
speaker output connector, should be implemented. This allows the speaker outputs to be RF decou-
pled to the chassis just before they exit the chassis from the speaker connector.
25 mm.
Designator
Reference
J5
DLY_SDIN/TWR
Signal Name
+8 V to +18 V
DLY_SDOUT
Designator
ERROC1234
Reference
PWM_SIG1
PWM_SIG2
ERRUVTE
Table 3. CRD4412 Interface Header Signal Assignments
+3.3 V
GND
SDA
RST
SCL
Direction
J2
J1
J4
J6
Signal
Output
Table 1. System Connections
Analog output from CS4412A.
Connection to CRD4525 controller card or external signals and power.
Selects between mono and stereo PWM input mode.
Connects CS4412A thermal warning output to CRD4412A interface header.
Allows direct access to CS4412A TWR and CS4525 DLY_SDIN signals
when CRD4525 is connected.
Allows direct access to CS4412A ERROC12/34 and CS4525 DLY_SDOUT
signals when CRD4525 is connected.
Table 2. System Headers
I²C serial data. Use to read board identification EEPROM.
Positive VD power.
I²C serial clock. Use to read board identification EEPROM.
CS4525 delay port serial audio data input/CS4412A thermal warning out-
put.
CS4412A over-current error outputs.
CS4525 delay port serial audio data output.
Ground reference.
Left channel logic level PWM input.
Right channel/mono logic level PWM input.
CS4412A under-voltage/temperature error output.
CS4412A reset input.
High voltage VP power.
Connector Function
Header Function
Signal Function
CRD4412A
7