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STA326 数据表(PDF) 20 Page - STMicroelectronics |
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STA326 数据表(HTML) 20 Page - STMicroelectronics |
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20 / 43 page ![]() STA326 20/43 7.7.1 Output Configuration Selection Table 15. Output Configuration Selections 7.7.2 Invalid Input Detect Mute Enable Setting the IDE bit enables this function, which looks at the input I2S data and clocking and will automati- cally mute all outputs if the signals are perceived as invalid. 7.7.3 Binary Clock Loss Detection Enable Detects loss of input MCLK in binary mode and will output 50% duty cycle to prevent audible artifacts when input clocking is lost. 7.7.4 Auto-EAPD on Clock Loss Enable When ECLE is active, it issues a power device power down signal (EAPD) on clock loss detection. 7.7.5 Powerdown If the powerdown bit is set low, a powerdown sequence is initiated resulting in a soft mute of all the chan- nels and PWM outputs are damped. BIT R/W RST NAME DESCRIPTION 1…0 R/W 00 OCFG (1…0) Output Configuration Selection 00 – 2-channel (Full-bridge) Power, 1-channel DDX is default OCFG (1...0) Output Power Configuration 00 2 Channel (Full-Bridge) Power, 1 Channel DDX: 1A/1B ◊ 1A/1B 2A/2B ◊ 2A/2B 01 2(Half-Bridge).1(Full-Bridge) On-Board Power: 1A ◊ 1A Binary 2A ◊ 1B Binary 3A/3B ◊ 2A/2B Binary 10 Reserved 11 1 Channel Mono-Parallel: 3A ◊ 1A/1B 3B ◊ 2A/2B BIT R/W RST NAME DESCRIPTION 2 R/W 1 IDE Invalid Input Detect Auto-Mute Enable: 0 – Disabled 1 – Enabled BIT R/W RST NAME DESCRIPTION 5 R/W 1 BCLE Binary Output Mode Clock Loss Detection Enable 0 – Disabled 1 – Enabled BIT R/W RST NAME DESCRIPTION 7 R/W 0 ECLE Auto EAPD on Clock Loss 0 – Disabled 1 – Enabled BIT R/W RST NAME DESCRIPTION 6 R/W 1 PWDN Software Power Down: 0 – Powerdown mode operation (auto soft-mute enabled) 1 – Normal Operation |
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