DSP56309EVM Freescale Semiconductor, DSP56309EVM Datasheet - Page 206

• Manufacturer Part Number: DSP56309EVM
• Description: KIT EVALUATION FOR XC56309
• Manufacturer: Freescale Semiconductor
• Type: DSPr

Specifications of DSP56309EVM

• Contents: Module Board, Installation Guide, Power Supply, Cable, Software and more
• Description/function: Audio DSPs
• Product: Audio Modules
• For Use With/related Products: DSP56309
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Triple Timer Module
9-14
Mode 5 (internal clock): TRM = 0
Mode 5 (internal clock): TRM = 1
TCF (Compare Interrupt if TCIE = 1)
N = write preload
M = write compare
TCF (Compare Interrupt if TCIE = 1)
N = write preload
M = write compare
TE
Clock
(CLK/2 or prescale CLK)
TLR
Counter
TCR
TIO pin
TE
Clock
(CLK/2 or prescale CLK)
TLR
NOTE: If INV = 1, a 1-to-0 edge on TIO loads the counter, and a 0-to-1 edge on TIO
loads TCR with count and the counter with N.
Counter
TCR
TIO pin
NOTE: If INV = 1, a 1-to-0 edge on TIO loads the counter, and a 0-to-1 edge on TIO
loads TCR with count and the counter with N.
Figure 9-13. Period Measurement Mode, TRM = 1
Figure 9-14. Period Measurement Mode, TRM = 0
N
N
0
0
period being measured
period being measured
first event
DSP56309 User’s Manual, Rev. 1
first event
N
N
N + 1
N + 1
M
M
M
M
M + 1
N
Interrupt Service
reads TCR; period
= M - N clock
periods
Counter continues
counting, does
not stop. Overflow
may occur (TOF=1).
Freescale Semiconductor
Interrupt Service
reads TCR; period
= M - N clock
periods
Counter continues
counting, does
not stop
N + 1
N + 1