Datasheet

SYSTEM CONTROL REGISTER 2 (0x05)
SOFT MUTE REGISTER (0x06)
VOLUME REGISTERS (0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D)
TAS5086
SLES131C – FEBRUARY 2005 – REVISED JUNE 2008 ................................................................................................................................................... www.ti.com
Bit D6 is a control bit and bit D5 is a configuration bit.
When bit D6 is set low, the system starts playing; otherwise, the outputs are shut down.
Bit D5 defines the configuration of the system, i.e., it determines what configuration the system runs in when bit
D6 is set low. When this bit is asserted, the system is configured to surround, meaning all channels are
switching. Otherwise, only a subset of the PWMs runs, corresponding to a 2.0 or 2.1 configuration as determined
by the surround register (0x19).
Bit D5 should be changed only when bit D6 is set to 1, meaning that it is only possible to switch configuration
from surround to 2.0/2.1 by resetting the TAS5086 and then restarting it again in the new configuration.
Table 7. System Control Register 2 (0x05)
D7 D6 D5 D4 D3 D2 D1 D0 FUNCTION
– 1 X – – – – – All channels are shut down (hard mute).
– 1 1 – – – – – All channels are shut down (hard mute). VALID1 = 0 and VALID2 = 0
– 0 1 – – – – – When D6 is deasserted, all channels are started. VALID1 = 1 and VALID2 = 1
– 0 0 – – – – – When D6 is deasserted, all channels not belonging to shutdown group 1 are started.
VALID1 = 0 and VALID2 = 1
Table 8. Soft Mute Register (0x06)
D7 D6 D5 D4 D3 D2 D1 D0 FUNCTION
– – – – – – – 1 Soft mute channel 1
– – – – – – 1 – Soft mute channel 2
– – – – – 1 – – Soft mute channel 3
– – – – 1 – – – Soft mute channel 4
– – – 1 – – – – Soft mute channel 5
– – 1 – – – – – Soft mute channel 6
0 0 0 0 0 0 0 0 Unmute all channels
Master volume – 0x07 (default is mute)
Channel 1 volume – 0x08 (default is 0 dB)
Channel 2 volume – 0x09 (default is 0 dB)
Channel 3 volume – 0x0A (default is 0 dB)
Channel 4 volume – 0x0B (default is 0 dB)
Channel 5 volume – 0x0C (default is 0 dB)
Channel 6 volume – 0x0D (default is 0 dB)
Table 9. Volume Register
D7 D6 D5 D4 D3 D2 D1 D0 FUNCTION
0 0 0 0 0 0 0 0 24 dB
0 0 1 1 0 0 0 0 0 dB (default for individual channel volume)
1 1 1 1 1 1 1 0 – 103 dB
1 1 1 1 1 1 1 1 MUTE (default for master volume)
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