HD6417616 RENESAS [Renesas Technology Corp], HD6417616 Datasheet - Page 765

• Manufacturer Part Number: HD6417616
• Description: 32-Bit RISC Microcomputer SuperH™ RISC engine Family/SH7600 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Status Flag Clearing Timing: After a status flag is read as 1 by the CPU, it is cleared by writing
0 to it. When the DMAC is activated, the flag is cleared automatically. Figure 17.42 shows the
timing for status flag clearing by the CPU, and figure 17.43 shows the timing for status flag
clearing by the DMAC.
(underflow)
TCNT
P
TCNT
input clock
Underflow signal
TCFU flag
TCIU interrupt
P
Address
Write signal
Status flag
Interrupt
request
signal
Figure 17.42 Timing for Status Flag Clearing by CPU
Figure 17.41 TCIU Interrupt Setting Timing
H'0000
TSR write cycle
T1
TSR address
H'FFFF
T2
Section 17 16-Bit Timer Pulse Unit (TPU)
Rev. 2.00 Mar 09, 2006 page 739 of 906
REJ09B0292-0200