Filter
Top Products
Chapter 3 Hardware
26 Reference Manual XTX 820
Pin # Signal Description
17 GNT0* Grant 0 – Refer to pin 10 for more information.
18 NC Not Connected (Reserved)
19 VCC0 +5 volts +/-%5
20 VCC1 +5 volts +/-%5
21 SERIRQ
Serial Interrupt Request – This signal is used to support the serial interrupt
protocol.
22 REQ0* Bus Request 0 – Refer to pin 9 for more information.
23 AD0
Address/Data bus 0 – These signals (AD31 – AD0) are multiplexed on the
same PCI connector pins. During the address phase of a PCI cycle, AD31–
AD0 contain a 32-bit address or other destination information. During the
data phase, AD31 – AD0 contain data.
24 +3.3V +3.3 volts +/-%5
25 AD1 Address/Data bus 1 – Refer to pin-23 for more information.
26 AD2 Address/Data bus 2 – Refer to pin-23 for more information.
27 AD4 Address/Data bus 4 – Refer to pin-23 for more information.
28 AD3 Address/Data bus 3 – Refer to pin-23 for more information.
29 AD6 Address/Data bus 6 – Refer to pin-23 for more information.
30 AD5 Address/Data bus 5 – Refer to pin-23 for more information.
31 CBE0* PCI Bus Command/Byte Enable 0 – This signal line is one of four signal
lines multiplexed on the same pins, so that during the address cycle, the
command is defined and during the data cycle, the byte enable is defined.
32 AD7 Address/Data bus 7 – Refer to pin-23 for more information.
33 AD8 Address/Data bus 8 – Refer to pin-23 for more information.
34 AD9 Address/Data bus 9 – Refer to pin-23 for more information.
35 GND Ground
36 GND Ground
37 AD10 Address/Data bus 10 – Refer to pin-23 for more information.
38 AUXA_L
Auxiliary A Input Left – This signal is normally used for an external CD-
ROM analog output or similar live-level audio source. Minimum input
impedance is 5k Ohms and nominal input level is 1 volt RMS.
39 AD11 Address/Data bus 11 – Refer to pin-23 for more information.
40 MIC Microphone reference signal – This microphone input signal has a minimum
input impedance of 5k Ohms, and the maximum input voltage is 0.15 Vp-p.
41 AD12 Address/Data bus 12 – Refer to pin-23 for more information.
42 AUXA_R Auxiliary A Input Right – This signal is normally used for an external CD-
ROM analog output or similar live-level audio source. Minimum input
impedance is 5k Ohms and nominal input level is 1 volt RMS.
43 AD13 Address/Data bus 13 – Refer to pin-23 for more information.
44 VCCA_AUD Analog Supply Voltage – This test voltage is used for the sound controller,
but is not available for customer use.
45 AD14 Address/Data bus 14 – Refer to pin-23 for more information.
46 AOUT_L
Stereo Line Output Left channel – This output signal has a nominal level of
1 volt RMS into 10k impedance load. This output signal can not drive low-
impedance speakers directly.