Spectracom TSync-PCIe - Leds; Upgrade; Interrupts; Interrupt Descriptions

6.7 LEDs
The TSync- PCIe board includes three LEDs that provide visual status information to the
user.Refer to the table "LED flash patterns" on page25 for these indicator codes. The LEDs
operate in certain modes by default, but each LED can be configured independently to display
any mode, including a manual mode. In manual mode, the user can set LEDs to on, off, or
blink.
6.8 Upgrade
One of the most powerful features available is the capability to perform field upgrades of the
configuration and firmware/FPGA loads for the TSync-PCIe boards.New features and cap
abilities can be added and uploaded to the board without the need to restart the system in
which the board is installed.Refer to the Factory Driver Guide for details on upgrading the
board using the upgrade tool supplied with the driver.
6.9 Interrupts
The host bus has one interrupt line available from the TSync-PCIe. All interrupt sources destined
for the host bus are multiplexed on the single interrupt line. All interrupts are masked on startup,
but can be unmasked using the host bus interrupt mask register. Whether an interrupt is masked
or not, the current state of the interrupt is available by reading the Host Bus Interrupt Status
register. All interrupt sources are latched based on an edge transition. All interrupts are cleared
in the host bus interrupt status register.
6.9.1 Interrupt Descriptions
6.9.1.1 1PPS Received
This interrupt is driven on the incident edge of the PPS.
6.9.1.2 Timing System Service Request
This interrupt is used by the micro to request attention from the local bus.
6.9.1.3 Local/μC Bus FIFO Empty
This interrupt is driven when the FIFO from the local bus to the microcontroller bus becomes
empty. It is based on the rising edge of the FIFO’s empty flag.
6.7 LEDs
CHAPTER 6 • Instruction Manual XYZ Rev. R
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