MAX13301 Datasheet, PDF (23/37 Pages) Maxim Integrated Products – 4-Channel, Automotive Class D Audio Amplifier Feedback After the Filter

4-Channel, Automotive Class D Audio Amplifier
Table 15. Control Register 5
BIT #
NAME
POR
7
6
SSEN
RST
0
0
CTRL5
5
4
3
SS2
SS1
SS0
0
0
0
2
PAR1
0
1
PAR0
0
0
ADDR_DEF
1
Table 16. Control Register 5 Bit Description
BIT
BIT DESCRIPTION
SSEN
Spread-Spectrum Modulation Enable.
0: Spread-spectrum disabled; SSEN = 1 and SS[2:0] > 0: Spread-spectrum enabled
RST
Reset. Setting RST to 1 resets the device. In reset, all register bits are reset to their POR values. RST is auto-
matically cleared back to 0 after device reset.
0 = Not in reset
1 = Reset
SS[2:0]
Spread-Spectrum Modulation Control. Spread-spectrum modulation is enabled when SSEN = 1 and SS[2:0]
> 0, once enabled the switching frequency varies from +2% to +7% (see Table 17).
PAR[1:0]
Parallel Mode. The four outputs can be paralleled in one of four ways. To parallel outputs, connect the posi-
tive outputs together and connect the negative outputs together. In parallel mode, only the feedback inputs
corresponding to the slaved input IN0+ or IN2+ are used. Connect the other feedback inputs to ground.
00 = 4-channel output
01 = 2.1-channel output. Outputs 0 and 1 are paralleled and slaved to input IN0+. Channels 2 and 3 are
unaffected.
10 = 2.1-channel output. Outputs 2 and 3 are paralleled and slaved to input IN2+. Channels 0 and 1 are
unaffected.
11 = 2-channel output. Outputs 0 and 1 are paralleled and slaved to input IN0+. Outputs 2 and 3 are paral-
leled and slaved to input IN2+.
ADDR_DEF
I²C Slave Address Definition. This bit determines whether the I²C slave address is hardware or software-
defined.
0 = Slave address is defined by CTRL4.ADDR[1:0] (I²C slave address setting bits).
1 = Slave address is set to the default address as defined by the state of the MUTE_CL1 input when the
enable input EN is pulled high.
Table 17. Spread-Spectrum Modulation Table
SSEN
SS2
SS1
SS0
0
X
X
X
1
0
0
0
1
0
0
1
1
0
1
0
1
0
1
1
1
1
0
0
1
1
0
1
1
1
1
0
1
1
1
1
SPREAD (%)
Disabled
0
2
3
4
5
6
7
Reserved
23