Ampro Corporation XTX 820 Benutzerhandbuch
Chapter 3
Hardware
24
Reference Manual
XTX 820
Universal Serial Bus (USB)
The XTX 820 COM supports up to six USB ports on the baseboard and the supported features are listed
below.
below.
• USB v2.0 backward compatible to legacy v.1.1
• Two root hubs and 4 ports on J1
• Two ports and 1 root hub on J2
• Supports USB boot of floppy disk drives, hard disk drives, CD-ROMs, or other USB boot devices
• Integrated physical layer transceivers
• Over-current detection status on USB ports 1 and 2
• Two root hubs and 4 ports on J1
• Two ports and 1 root hub on J2
• Supports USB boot of floppy disk drives, hard disk drives, CD-ROMs, or other USB boot devices
• Integrated physical layer transceivers
• Over-current detection status on USB ports 1 and 2
Table 3-5. Simplified USB Interface Pin/Signal Descriptions (J1)
J1
Pin #
Pin #
Signal
Description
USBP
USB Power –
76
USB0-
Universal Serial Bus Port 0 Data Negative Polarity
88
USB0+
Universal Serial Bus Port 0 Data Positive Polarity
80
USB1-
Universal Serial Bus Port 1 Data Negative Polarity
92
USB1+
Universal Serial Bus Port 1 Data Positive Polarity
58
USB2-
Universal Serial Bus Port 2 Data Negative Polarity
66
USB2+
Universal Serial Bus Port 2 Data Positive Polarity
62
USB3-
Universal Serial Bus Port 3 Data Negative Polarity
72
USB3+
Universal Serial Bus Port 3 Data Positive Polarity
GND
USB Port ground
Note: The shaded area denotes power or ground.
Serial Interrupt Request
This SERIRQ signal is connected to serial request input on the I/O Hub (Southbridge) chip (82801FBM)
for the alternative LPC/PCI interrupts. If this feature is supported, then DMA2 (DAck2 and DRQ2)
shall not be supported by XTX 820 module.
for the alternative LPC/PCI interrupts. If this feature is supported, then DMA2 (DAck2 and DRQ2)
shall not be supported by XTX 820 module.
Table 3-6. Simplified Serial Interrupt Request (J1)
J1 Pin # Signal
Description
21
SERIRQ
Serial Interrupt Request – This pin is used to support the serial interrupt protocol.
AC’97 Sound
The XTX 820 module supports the AC’97 audio standard and the supported features are listed below.
• Provides Realtek ALC 655, AC'97/HDA (High Definition Audio CODECs)
• AC’97 Rev 2.2 compliant
• Supports audio amplifier on baseboard
• PC-Beep passthrough to Line Out while reset is held active low
• True Line Level Output with volume control independent of Line Out
• Digital 3V and 5V compliant
• AC’97 Rev 2.2 compliant
• Supports audio amplifier on baseboard
• PC-Beep passthrough to Line Out while reset is held active low
• True Line Level Output with volume control independent of Line Out
• Digital 3V and 5V compliant