Ampro Corporation COM 830 manual Boot Strap Signals, Signal Description of Boot Strap Signal

Chapter 3Signals and Pinout Tables

Boot Strap Signals

Table 3-24. Boot Strap Signal Descriptions

Signal	Description of Boot Strap Signal	I/O	PU/PD	Comment
AC_SYNC	AC ’97/Intel® High Definition	O 3.3V		AC_SYNC is
	Audio Sync: This signal is a 48 kHz			a boot strap
	fixed rate sample sync to the			signal (see
	codec(s). It is also used to encode			caution
	the stream number.			statement
				below)
AC_SDOUT	AC ’97/Intel High Definition	O 3.3V		AC_SDOUT
	Audio Serial Data Out: This signal			is a boot strap
	is the serial TDM data output to the			signal (see
	codec(s). This serial output is			caution
	double-pumped for a bit rate of 48			statement
	Mb/s for Intel High Definition			below)
	Audio.
ATA_ACT#	ATA (parallel and serial) or SAS	OC 3.3V		ATA_ACT# is
	activity indicator, active low.			a boot strap
				signal (see
				caution
				statement
				below)
SPKR	Output for audio enunciator, the	O 3.3V		SPEAKER is
	"speaker" in PC-AT systems			a boot strap
				signal (see
				caution
				statement
				below)
PEG_LANE_RV#	PCI Express Graphics lane reversal	I 1.05V		PEG_LANE_
	input strap. Pull low on the carrier			RV# is a boot
	board to reverse lane order. Be			strap signal
	aware that the SDVO lines that			(see caution
	share this interface do not			statement
	necessarily reverse order if this			below)
	strap is low.
SDVO_I2C_DAT	SDVO I²C data line to set up SDVO	I/O OD		SDVO_I2C_D
(SDVO_DATA)	peripherals.	2.5V		AT is a boot
				strap signal
				(see caution
				statement
				below)

COM 830 Reference Manual 45