TC1796
System Units (Vol. 1 of 2)
Introduction
User’s Manual 1-28 V2.0, 2007-07
Intro, V2.0
• Duty Cycle Measurement (DCM)
– Four independent units
– 0 - 100% margin and time-out handling
– f
GPTA
maximum resolution
– f
GPTA
/2 maximum input signal frequency
• Digital Phase Locked Loop (PLL)
– One unit
– Arbitrary multiplication factor between 1 and 65535
– f
GPTA
maximum resolution
– f
GPTA
/2 maximum input signal frequency
• Clock Distribution Unit (CDU)
– One unit
– Provides eight clock output signals (clock bus):
f
GPTA
, divided f
GPTA
clocks, FPC1/FPC4 outputs, DCM clock, LTC prescaler clock
Signal Generation Unit
• Global Timers (GT)
– Two independent units
– Two operating modes (Free-Running Timer and Reload Timer)
– 24-bit data width
– f
GPTA
maximum resolution
– f
GPTA
/2 maximum input signal frequency
• Global Timer Cell (GTC)
– 32 units related to the Global Timers
– Two operating modes (Capture, Compare and Capture after Compare)
– 24-bit data width
– f
GPTA
maximum resolution
– f
GPTA
/2 maximum input signal frequency
• Local Timer Cell (LTC)
– 64 independent units
– Three basic operating modes (Timer, Capture and Compare) for 63 units
– Special compare modes for one unit
– 16-bit data width
– f
GPTA
maximum resolution
– f
GPTA
/2 maximum input signal frequency
Interrupt Sharing Unit
• 286 interrupt sources, generating up to 92 service requests.
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