TAS5558 Lineout

PWM_P_5 and PWM_P_6 can be config to lineout L and lineout R, what's the defferent  between the PWM and lineout?

 line output is just a high impedance analog input

Please refer：  http://en.wikipedia.org/wiki/Line_level

The same to PWM, please refer to https://en.wikipedia.org/wiki/Pulse-width_modulation#Audio_effects_and_amplification

Do you have any  reference schematic for tas5558 line out?(PWM to analog filter)