DG AB19-M2PCI Handmatig - Pagina 5

Blader online of download pdf Handmatig voor {categorie_naam} DG AB19-M2PCI. DG AB19-M2PCI 7 pagina's. M.2-pcie adapter board

Access Indicator LED

There is an SSD access LED near each M.2 connector as shown in Figure 7, which emits light when the

respective M.2 connector pin 10 (DAS/DSS signal) is at a Low level.

Clock circuit

The adapter is equipped with a clock generator that complies with the PCI Express Gen5 standard and

provides 100MHz differential clocks in the same phase for all PCIe clock and all 4 channels of M.2 SSDs

system clock. The clock frequency is fixed at 100 MHz and cannot be changed.

The adapter contains a reset IC that generates reset signals for PCIe and M.2, a reset switch for manually

generating a reset signal, and 2x2 jumper headers for selecting each reset system.

The reset IC constantly monitors the voltage level of the +3.3V power supply and outputs a low active reset

signal when the voltage level falls below approximately 3.0V. It also generates a reset signal pulse of about

100msec when the reset switch is pressed.

The reset signal connection can be set as shown below by inserting a socket into the 2 x 2 4-pin header JP1

shown in Figure 8. (The factory default socket settings are the connections between 1-3 and between 2-4 as

shown in Figure 8.)

Short between 1 and 3: Connects the reset IC output to the reset of all 4 M.2 SSDs.

Short between 2 and 4: Connects the reset IC output to the PCI Express reset

Short between 1-2: Connects PCI Express reset to all 4 M.2 SSD resets.

Figure-8: Reset switch (SW1) and pin header (JP1) for reset connection settings

Figure-7: Access Indicator LED for each SSD

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