CS35L32 Datasheet, PDF (28/51 Pages) Cirrus Logic – Boosted Class D Amplifier with Speaker-Protection Monitoring and Flash LED Drivers

CS35L32
4.12 Signaling Format
4.12.3 Transmitting Data from a Dual-CS35L32 Configuration
To indicate a dual-CS35L32 configuration where the SDOUT line is shared, the user must set SHARE (see p. 39). When
two CS35L32 devices are available on the same board, each device is identified by its I²C address. The AD0 pin is shared
by FLOUT2. Upon power-up or upon deasserting RESET, each CS35L32 reads the AD0 pin logic level and configures its
chip address. Transmission starts when SDOUT_3ST (see p. 37) is cleared. The Device 0 address (AD0 level low)
transmits its data on the left channel time slot while Device 1 is automatically tristated; the Device 1 address (AD0 level
high) transmits on the right-channel time slot while Device 0 is automatically tristated.
The DATCNF setting (see p. 39) determines data transmission for both CS35L32s, as shown below:
• Table 4-10 (DATCNF = 00): left and right channel VMON[11:0], IMON[11:0], VPMON[7:0]
• Table 4-11 (DATCNF = 01): left and right channel VMON[11:0], IMON[11:0], STATUS
• Table 4-12 (DATCNF = 10): left and right channel VMON[15:0], IMON[15:0]
• Table 4-13 (DATCNF): left and right channel VPMON[7:0], STATUS
Table 4-10. SDOUT Monitor Data Positioning (Two CS35L32s, DATCNF = 00)
Bit Bit Number Left-Channel Data Contents Right-Channel Data Contents
MSB
1
VMON[11] Device 0
VMON[11] Device 1
MSB – 1
2
VMON[10] Device 0
VMON[10] Device 1
…
…
…
…
MSB – 11
12
VMON[0] Device 0
VMON[0] Device 1
MSB – 12
13
IMON[11] Device 0
IMON[11] Device 1
MSB – 13
14
IMON[10] Device 0
IMON[10] Device 1
…
…
…
…
MSB – 23
24
IMON[0] Device 0
IMON[0] Device 1
MSB – 24
25
VPMON[7] Device 0
VPMON[7] Device 1
MSB – 25
26
VPMON[6] Device 0
VPMON[6] Device 1
…
…
…
…
MSB – 31
32
VPMON[0] Device 0
VPMON[0] Device 1
Table 4-11. SDOUT Monitor Data Positioning (Two CS35L32s, DATCNF = 01)
Bit Bit Number Left-Channel Data Contents Right-Channel Data Contents
MSB
1
VMON[11] Device 0
VMON[11] Device 1
MSB – 1
2
VMON[10] Device 0
VMON[10] Device 1
…
…
…
…
MSB – 11
12
VMON[0] Device 0
VMON[0] Device 1
MSB – 12
13
IMON[11] Device 0
IMON[11] Device 1
MSB – 13
14
IMON[10] Device 0
IMON[10] Device 1
…
…
…
…
MSB – 23
24
IMON[0] Device 0
IMON[0] Device 1
MSB – 24
25
AMP_SHORT Device 0
AMP_SHORT Device 1
MSB – 25
26
OTW Device 0
OTW Device 1
MSB – 26
27
OTE Device 0
OTE Device 1
MSB – 27
28
VMONIMON_OVFL Device 0 VMONIMON_OVFL Device 1
MSB – 28
29
VPMON_OVFL Device 0
VPMON_OVFL Device 1
MSB – 29
30
PDN_DONE Device 0
PDN_DONE Device 1
MSB – 30
31
BOOST_CURLIM Device 0 BOOST_CURLIM Device 1
MSB – 31
32
LED_TIMERON Device 0 LED_TIMERON Device 1
Table 4-12. SDOUT Monitor Data Positioning (Two CS35L32s, DATCNF = 10)
Bit Bit Number Left Channel Data Contents Right Channel Data Contents
MSB
1
VMON[15] Device 0
VMON[15] Device 1
MSB – 1
2
VMON[14] Device 0
VMON[14] Device 1
…
…
…
…
MSB – 15
16
VMON[0] Device 0
VMON[0] Device 1
MSB – 16
17
IMON[15] Device 0
IMON[15] Device 1
MSB – 17
18
IMON[14] Device 0
IMON[14] Device 1
…
…
…
…
MSB – 31
32
IMON[0] Device 0
IMON[0] Device 1
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