ASRock H77TM-ITX manual Bklten Bkltpwm Bkltpwr

HDMI_SPDIF Header

(2-pin HDMI_SPDIF1) (see p.13/15/17, No. 25)

1

GND

SPDIFOUT

This header provides SPDIF audio output to HDMI VGA cards, allowing the system to connect HDMI Digital TV/projector/LCD devices. Please connect the HDMI_ SPDIF connector of a HDMI VGA card to this header.

Backlight & Amp

Volume Control

Header

(8-pin BLT_VOL1)

(see p.13/15/17, No. 17)

1

1: BKLT_EN

2: BKLT_PWM

3: BKLT_PWR

4: BKLT_PWR

5: GND

6: GND

7: Brightness_Up

8: Brightness_Down

Digital MIC Header	1	1: +5V
(5-pin DMIC1)		2: No pin
(see p.13/15/17, No. 24)		2: SPDIF_OUT/DMIC_CLK
		3: GND
		4: DMIC_DATA
		5: +3.3V

Home Theater PC

Header

(7-pin HTPC1)
(see p.13/15/17, No. 29)	1

PIN	Signal Name	PIN	Signal Name
8	HDMI CEC	7	#Power_Button
6	SMB_DATA	5	3.3V Standby
4	SMB_CLK	3	No pin
2	GND	1	Recording LED

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