1. PCI/PCIe TFP Hardware
EVENTREQ register does not generate an Event Input interrupt.
UNLOCK1 Register (0x08)
Accessing this register (with a read or write operation) releases the EVENT1 time capture lockout
function if it has been enabled, allowing the Event Input or Periodic/DDS Output to capture a new
time. The Event Time Capture Lockout is enabled using bit 0 in the CONTROL Register (LOCKEN1).
UNLOCK2 Register (0x0C)
Accessing this register (with a read or write operation) releases the EVENT2 time capture lockout
function if it has been enabled, allowing a new event to be captured. The Event2 Time Capture Lock-
out is enabled using bit 8 in the CONTROL Register (LOCKEN2).
CONTROL Register (0x10)
This register controls a variety of TFP hardware functions. The following table lists the function of
each bit in this register.
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