CS35L32 Datasheet, PDF (39/51 Pages) Cirrus Logic – Boosted Class D Amplifier with Speaker-Protection Monitoring and Flash LED Drivers

CS35L32
7.13 ADSP Control
7.13 ADSP Control
R/W
7
6
ADSP_DRIVE
M/S
Default
0
0
5
4
3
2
DATCNF[1:0]
SHARE
1
0
0
0
Address 0x0F
1
0
—
0
0
Bits Name
Description
7 ADSP_ ADSP output drive strength. Selects the drive strength used for the ADSP outputs. These outputs include SDOUT as well as
DRIVE SCLK and LRCK when the device is in Master Mode. Table 3-8 lists drive-strength specifications.
0 (Default) 1x
1 0.5x
6 M/S ADSP Master/Slave Mode. Configures the ADSP I/O clocking. See Section 4.11.2 for details.
0 (Default) Slave (SCLK/LRCK input only)
1 Master (SCLK/LRCK output only)
5:4 DATCNF Data configuration for dual CS35L32 applications only. Determines the data packed in a two-CS35L32 configuration.
00 Left/right channels VMON[11:0], IMON[11:0], VPMON[7:0]. See Table 4-10.
01 Left/right channels VMON[11:0], IMON[11:0], STATUS. See Table 4-11.
10 (Default) left/right channels VMON[15:0], IMON [15:0]. See Table 4-12.
11 Left/right channels VPMON[7:0], STATUS. See Table 4-13.
3 SHARE SDOUT sharing. Determines whether one or two CS35L32 devices are on board sharing SDOUT.
0 (Default) One IC. Data configuration per Table 4-9.
1 Two ICs. For data configuration, refer to DATCNF (bits 5:4. above).
2:0 — Reserved
7.14 Class D Amplifier Control
Address 0x10
R/W
7
6
—
5
4
3
2
1
0
AMP_GAIN[2:0]
GAIN_CHG_ZC
—
Default
0
0
0
1
0
1
0
0
Bits Name
Description
7:6
—
Reserved
5:3 AMP_GAIN Amplifier gain. Configures the amplifier gain. Step size: ~3 dB
000 Mute (–80 dB)
001 9 dB
010 (Default) 12 dB 100 18 dB
011 15 dB
101–111 Reserved
2 GAIN_ Gain change zero-cross. Configures when AMP_GAIN (see p. 39) changes are applied.
CHG_ZC 0 Changes are not aligned to zero crosses.
1 (Default) Changes are delayed to occur at zero crossings
1:0
—
Reserved
7.15 Protection Release Control
R/W
7
6
5
4
—
Default
0
0
0
0
Address 0x11
3
2
1
AMP_SHORT_RLS
—
0
0
0
0
OTE_RLS
0
Bits Name
Description
7:3 — Reserved
2 AMP_ Amplifier short protection release. Releases amplifier short protection that places the device into Speaker-Safe Mode if the
SHORT_ amplifier short condition is no longer present, which can be determined by reading AMP_SHORT (see Section 7.19) twice.
RLS
0 (Default)
If the amplifier short condition is present, Speaker-Safe Mode is applied.
1
0  1  0 sequence After the sequence, if the short condition is no longer present, Speaker-Safe Mode is cleared unless
an OTE condition is active. During the sequence, short monitoring is inactive because the amplifier is
in an OFF state, as explained in Section 7.19. Short monitoring resumes after the sequence.
1
— Reserved
DS963F5
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