PLX Technology PEX 8624-AA RDK, Справочник по аппаратуре

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PEX 8624-AA RDK Hardware Reference Manual – Version 1.1
Copyright © 2010 by PLX Technology, Inc. All rights reserved
19
SW8 Functional Description Switch Position Settings
PEX 8624 I
2
C Address bits[2:0].
Default setting is 000b.
4: I2C_ADDR[0]
5: I2C_ADDR[1]
6: I2C_ADDR[2]
I2C_ADD[2:0] PEX 8624 I
2
C Slave Address
ON,ON,ON 68h
ON,ON,OFF 69h
ON,OFF,ON 6Ah
ON,OFF,OFF 6Bh
OFF,ON,ON 6Ch
OFF,ON,OFF 6Dh
OFF,OFF,ON 6Eh
OFF,OFF,OFF 6Fh
3.2 Push-Button Switches
3.2.1 Manual Reset# (S1)
The PEX 8624-AA RDK provides a manual switch (S1) for manual PERST# capability. Note that manual PERST#
will only apply warm reset to the PEX 8624 as well as SLOT 1 to SLOT 3.
3.2.2 Serial Hot-Plug Controller Attention Button (S2)
The PEX 8624-AA RDK provides a manual switch S2 for the attention button to the serial hot-plug circuit. When
pushed and released, the switch generates an active low pulse to the Attention Button Input of the serial hot-plug
controller.
3.2.3 Parallel Hot-Plug Controller Attention Button (S3)
The PEX 8624-AA RDK provides a manual switch S3 for attention button to the parallel hot-plug circuit. When
pushed and released, the switch generates an active low pulse to the Attention Button Input of parallel hot-plug
controller.
3.3 Midbus probe footprints (JP1 – JP2)
The PEX 8624-AA RDK provides two strategically placed midbus probe footprints. Each footprint provides 16
channels and each can support eight PCI Express lanes. The midbus footprints are based on Agilent’s Soft Touch
Midbus Probe, as shown in
Figure 3-9 , and can be used with Agilent, LeCroy as well as Tektronix retention
mechanism. Table 3-7 below shows the signal names of x8 PCI Express midbus probe footprint and Table 3-8
shows the PCI Express lanes of the PEX 8624 and their midbus probe footprints.