CDB44800 Cirrus Logic Inc, CDB44800 Datasheet - Page 63

• Manufacturer Part Number: CDB44800
• Description: BOARD EVAL FOR CS44800 PWM CTRL
• Manufacturer: Cirrus Logic Inc
• Series: Popguard®r

Specifications of CDB44800

• Amplifier Type: Class D
• Output Type: 8-Channel
• Voltage - Supply: 20 V ~ 50 V
• Operating Temperature: -10°C ~ 70°C
• Board Type: Fully Populated
• Utilized Ic / Part: CS44800
• Description/function: Audio DSPs
• Operating Supply Voltage: 5 V
• Product: Audio Modules
• For Use With/related Products: CS44800
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Max Output Power X Channels @ Load: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 598-1532; CDB-44800

DS632F1
7.19
7.19.1 Channel Compensation Filter - Fine Adjust (CHXX_FINE[5:0])
7.20
7.20.1 Interrupt Pin Control (INT1/INT0)
RESERVED
INT1
7
7
Chnl XX Load Compensation Filter - Fine Adjust
(addresses 19h, 1Bh, 1Dh, 1Fh, 21h, 23h, 25h, 27h)
Interrupt Mode Control (address 28h)
Default = 000000
Function:
The Channel Load Compensation Filter Fine Adjustment settings control the amount of attenuation of this
single-pole filter which follows the Coarse Adjustment Compensation Filter. These bits are used in con-
junction with the Coarse Adjustment bits to fine tune the total frequency response of the system to com-
pensate for speaker impedance load variations. Each PWM channel is controlled by an associated
register. The fine adjustment bits will attenuate the audio response curve according to the table below in
0.1 dB increments. Filter setting values less than -4.0 dB will cause the PWM output to mute.
Default = 00
00 - Active high, high output indicates interrupt condition has occurred
01 - Active low, low output indicates an interrupt condition has occurred
10 - Open drain, active low. Requires an external pull-up resistor on the INT pin.
11 - Reserved
Function:
Determines how the interrupt pin (INT) will indicate an interrupt condition. If any of the mask bits in the
Interrupt Mask Register are set to a 1b, read the Interrupt Status Register to determine which condition
caused the interrupt.
RESERVED
INT0
6
6
Table 12. Channel Load Compensation Filter Coarse Adjust
Table 13. Channel Load Compensation Filter Fine Adjust
CHXX_FINE5
RESERVED
5
5
CHXX_CORS[5:0]
CHXX_FINE[5:0]
000000
000001
001010
100000
101000
000000
000001
001010
100000
101000
011001
011001
CHXX_FINE4
RESERVED
4
4
Coarse Filter Setting
CHXX_FINE3
RESERVED
Fine Filter Setting
3
3
-0.1 dB
-1.0 dB
-2.5 dB
-3.2 dB
-4.0 dB
-0.1 dB
-1.0 dB
-2.5 dB
-3.2 dB
-4.0 dB
0 dB
0 dB
CHXX_FINE2
RESERVED
2
2
CHXX_FINE1
RESERVED
1
1
CS44800
CHXX_FINE0
OVFL_L/E
0
0
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