Dolby Laboratories S01/13621 manual Direction

Dolby Installation Guidelines					Unit Connections and Dimensions
			Table 2-10Pin Connections for the Status Port
	Pin	Direction	Connection		Comments
	1	Output	Dolby E Detect	1: Dolby E	0: PCM or none
	2	Output	Reference Video Valid	1: Valid;	0: Ref video error
	3	Output	Dolby E Decoding Valid	1: Valid;	0: Decoding error
	4	Output	System Operational	1: Functional	0: Failed
	5	Output	Fault	1: Functional	0: Hardware Fault
	6	Output	Reserved	—
	7	Input	PCM channel routing	Voiceover and Switched mode
	8	Input	PCM channel routing	Voiceover and Switched mode
	9	N/A	Ground	—

Pins 1–5 These indicate details regarding the current condition of the unit. A “1”

corresponds to a “high” level on the corresponding pin.

Pins 7–8 These can be used to select Voiceover and Switched Out modes. The state of the pins is normally high (internal pull up), and they detect a high-to- low transition. A held contact closure between pins 7 and 9 (ground) or pins 8 and 9 is required to activate a function. A low-to-high transition (i.e., a switch release) restores the delay out setting. The table below shows the function of the two GPI pins on the DP572.

Table 2-11Status port Output Routing Mode Selection

Ctrl in Pin 8	Ctrl in Pin 7	PCM Chan Config
		Output Routing Mode
High	High	Delay Out
High	Low	Voiceover
Low	High	Switched Out
Low	Low	Reserved

Figure 2-5 details the channel routing of these modes for a 5.1 input.

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