PCI9030-AA60BI PLX Technology, PCI9030-AA60BI Datasheet - Page 111

• Manufacturer Part Number: PCI9030-AA60BI
• Description: Peripheral Drivers & Components (PCIs) 32-bit 33MHz PCI v.2.2-compliant
• Manufacturer: PLX Technology

Specifications of PCI9030-AA60BI

• Package / Case: FPBGA-180
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Operating Supply Voltage: 3.3 V
• Lead Free Status / Rohs Status: No RoHS Version Available

Controlling Connection Processes
LED in two different pins (CPCISW and LEDon#,
respectively).
When the ejector is opened or closed, the switch
bounces for a time. The PCI 9030 uses internal
debounce circuitry to clean the signal before the
remainder of Hot Swap logic acknowledges it. The
switch state is sampled six times, at 1 ms intervals,
before it is determined to be closed or open.
The blue “Status” LED, located on the front of the Hot
Swap CompactPCI board, is turned on when it is
permissible to remove a board. The hardware
connection layer provides protection for the system
during all insertions and extractions. This LED
indicates the system software is in a state that
tolerates board extraction.
Upon insertion, the LED is automatically turned on by
the hardware until the hardware connection process
completes. The LED remains OFF until the software
uses it to indicate extraction is once again permitted.
The PCI 9030 uses an open-drain output pin to
sink the external LED. The LED state is driven
from the
(HS_CSR[3]). LEDon# is also asserted during PCI
reset (RST# asserted).
The CPCISW input signal acknowledges the state
ejector handle change to identify when a board is
inserted or removed. The appropriate status bits are
set (HS_CSR[7:6]=1).
8.2.2.2
ENUM# is provided to notify the Host CPU that a
board was recently inserted or is about to be removed.
This signal informs the CPU that system configuration
changed, at which time the CPU performs necessary
maintenance such as installing a device driver upon
board insertion, or quiescing a device driver prior to
board extraction.
PCI 9030 Data Book Version 1.4
© 2002 PLX Technology, Inc. All rights reserved.
LED
ENUM#
Software
On/Off
Switch
bit
ENUM# is an open collector bused signal with a
pull-up on the Host Bus. It may drive an interrupt
(preferred) or be polled by the system software at
regular intervals. The CompactPCI Hot-Plug system
driver on the system Host manages the ENUM#
sensing. Full Hot Swap boards assert ENUM# until
serviced by the Hot-Plug system driver.
When a board is inserted into the system and comes
out of reset, the PCI 9030 acknowledges the ejector
switch state. If this switch is open (ejector handle
closed), the PCI 9030 asserts the ENUM# interrupt
and sets the ENUM# Status Indicator for Board
Insertion bit (HS_CSR[7]). Once the Host CPU installs
the proper drivers, it can logically include this board by
clearing the interrupt.
When a board is about to be removed, the PCI 9030
acknowledges the ejector handle is open, asserts the
ENUM# interrupt, and sets the ENUM# Status
Indicator for the Board Removal bit (HS_CSR[6]).
The Host then logically removes the board and turns
on the LED, at which time the board can be removed
from the system.
8.2.2.3
The PCI 9030 supports Hot Swap directly, as a
control/status register in Configuration space. This
register is accessed through the PCI Extended
Capabilities Pointer (ECP) mechanism.
The Hot Swap Control/Status register (HS_CSR)
provides status read-back for the Hot-Plug system
software to determine which board is driving ENUM#.
This register is also used to control the Hot Swap
Status LED on the board front panel, and to de-assert
ENUM#.
Register (HS_CSR)
Hot Swap Control/Status
CompactPCI Hot Swap
Section 8
8-3