Ampro Corporation XTX 820 User Manual
Page 38
Chapter 3
Hardware
32
Reference Manual
XTX 820
Table 3-14. Miscellaneous Interface Pin/Signal Descriptions (J2)
Pin #
Signal
Description
64
PCI_GNT#A
Reserved
66
PCI_REQ#A
Reserved
90
FAN_TACHOIN Fan Tachometer Input – This signal provides the speed (or tachometer)
input from the fan.
92
FAN_PWMOUT Fan Speed Control Out – This output signal uses the Pulse Width
Modulation (PWM) technique to control the fan's RPM.
48
WDTRIG
Watch Dog Trigger Input – This signal provides a watchdog (WDT)
trigger signal to the system.
49
SLP_S3*
S3 (Suspend to RAM) Sleep Control – Signal shuts off power to all non-
critical systems when in S3, S4, or S5 states
32
SUS_STAT*
Suspend Status – This signal indicates the system will be entering a low
power state soon.
14, 20
5V_SB
+5 Volt Standby – Additional suspend voltage. If power supply does not
provide standby voltage, connect this pin to VCC (+5V).
19, 51, 52,
74, 80, 83,
84
VCC
DC Power – +5VDC, ±5%
1, 2, 7, 8,
13, 26, 29,
35, 36, 42,
57, 67, 68,
73, 99, 100
GND
Ground
34, 60, 62,
65, 70, 72,
76, 78,
NC
Not connected (Reserved)
Notes: The shaded area denotes power or ground. The signals marked with * = Negative true logic.
Table 3-15. Complete J2 Interface Pin/Signal Descriptions (J2)
Pin #
Signal
Description
1, 2
GND
Ground
3
PCIE_CLK_REF+
PCI Express Reference Clock, Positive Differential Line
4
SATA0_RX+
Serial ATA Channel 0, Receive Input, Positive Differential Line
5
PCIE_CLK_REF-
PCI Express Reference Clock, Negative Differential Line
6
SATA0_RX-
Serial ATA Channel 0, Receive Input, Negative Differential Line
7, 8
GND
Ground
9
PCIE3_TX+
PCI Express Lane 3, Transmit Output, Positive Differential Line
10
SATA0_TX-
Serial ATA Channel 0, Transmit Output, Negative Differential Line
11
PCIE3_TX-
PCI Express Lane 3, Transmit Output, Negative Differential Line
12
SATA0_TX+
Serial ATA Channel 0, Transmit Output, Positive Differential Line
13
GND
Ground
14
5V_SB
+5 Volt Standby – Additional suspend voltage.
15
PCIE3_RX+
PCI Express Lane 3, Receive Input, Positive Differential Line
16
SATA1_RX+
Serial ATA Channel 1, Receive Input, Positive Differential Line