Table of Contents
Advertisement
Example of Non-Overlapping TPC Output (Example of Four-Phase Complementary Non-
Overlapping Output): Figure 11.7 shows an example of the use of TPC output for four-phase
complementary non-overlapping pulse output.
TCNT value
GRB
TCNT
GRA
H'0000
NDRB
95
PBDR
00
TP
15
TP
14
TP
13
TP
12
TP
11
TP
10
TP
9
TP
8
•
The 16-bit timer channel to be used as the output trigger channel is set up so that GRA and GRB are
output compare registers and the counter will be cleared by compare match B. The TPC output trigger
period is set in GRB. The non-overlap margin is set in GRA. The IMIEA bit is set to 1 in TISRA to enable
IMFA interrupts.
•
H'FF is written in PBDDR and NDERB, and bits G3CMS1, G3CMS0, G2CMS1, and G2CMS0 are set in
TPCR to select compare match in the 16-bit timer channel set up in step 1 as the output trigger. Bits
G3NOV and G2NOV are set to 1 in TPMR to select non-overlapping output. Output data H'95 is written in
NDRB.
•
The timer counter in this 16-bit timer channel is started. When compare match B occurs, outputs change
from 1 to 0. When compare match A occurs, outputs change from 0 to 1 (the change from 0 to 1 is delayed
by the value of GRA). The IMFA interrupt service routine writes the next output data (H'65) in NDRB.
•
Four-phase complementary non-overlapping pulse output can be obtained by writing H'59, H'56, H'95...
at successive IMFA interrupts. If the DMAC is set for activation by this interrupt, pulse output can be
obtained without loading the CPU.
Figure 11.7 Non-Overlapping TPC Output Example (Four-Phase Complementary
Section 11 Programmable Timing Pattern Controller (TPC)
65
59
95
05
65
41
59
Non-overlap margin
Non-Overlapping Pulse Output)
56
95
65
50
56
14
95
Rev. 4.00 Jan 26, 2006 page 457 of 938
Time
05
65
REJ09B0276-0400
Advertisement
Table of Contents
