Texas Instruments XIO3130 EVM 데이터 시트
1.3
Hot-Plug-Mode Operation
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Hot-Plug-Mode Operation
Figure 1-4. GPIO Control Register
•
General control register (PCI register offset: D4h in each downstream bridge)
–
RCVR_PRSNT_EN = 0b – PRSNT pin is used to determine whether slot is present
–
REFCK_DIS = 0b – REFCK enabled
–
LINK_ACT_RPT_CAP = 1b – Slot is link active reporting capable
–
SLOT_PRSNT = 1b – Port connected to slot
•
General slot info register (PCI register offset EEh in each downstream bridge)
–
SLOT_NUM = 1b for slot 1, 2b for slot 2, and 3b for slot 3
In hot-plug mode, the EVM board utilizes the TPS2363 PCIe server dual-slot hot-plug controller to switch
power on and off to slots 1 and 2. The TPS2363 is directly controlled by the hot-plug controller built into
the XIO3130. Slot 3 operates in normal mode. To configure the EVM for hot-plug operation, the six
jumpers (J7, J11, J13, J14, J15, J16) must be removed (see
power on and off to slots 1 and 2. The TPS2363 is directly controlled by the hot-plug controller built into
the XIO3130. Slot 3 operates in normal mode. To configure the EVM for hot-plug operation, the six
jumpers (J7, J11, J13, J14, J15, J16) must be removed (see
Figure 1-5. Power Jumpers
The dipswitch should be configured with SCL, DN1_DPSTRP and DN2_DPSTRP slide switches in the up
position, and DN3_DPSTRP slide switches in the down position (see
position, and DN3_DPSTRP slide switches in the down position (see
). This configuration
enables the EEPROM and enables hot-plug operation on slots 1 and 2.
SLLU108 – July 2008
XIO3130 EVM
3