ADSP-21161N Datasheet, PDF (26/60 Pages) Analog Devices – DSP Microcomputer

ADSP-21161N
Timer
Table 13. Timer
Parameter
Min
Switching Characteristic
t_DTEX
CLKIN to TIMEXP
1
Max
7
Unit
ns
CLKIN
TIMEXP
t_DTEX
t_DTEX
Figure 18. Timer
Flags
Table 14. Flags
Parameter
Timing Requirement
t_SFI
FLAG11–0_IN Setup Before CLKIN¹
t_HFI
t_DWRFI
t_HFIWR
FLAG11–0_IN Hold After CLKIN¹
FLAG11–0_IN Delay After RD/WR Low¹
FLAG11–0_IN Hold After RD/WR Deasserted¹
Min
4
1
0
Max
12
Switching Characteristics
t_DFO
t_HFO
t_DFOE
t_DFOD
FLAG11–0_OUT Delay After CLKIN
FLAG11–0_OUT Hold After CLKIN
CLKIN to FLAG11–0_OUT Enable
CLKIN to FLAG11–0_OUT Disable
9
1
1
5
1 _{Flag inputs meeting these setup and hold times for instruction cycle N will affect conditional instructions in instruction cycle N+2.}
Unit
ns
ns
ns
ns
ns
ns
ns
ns
CLKIN
FLAG11–0_OUT
t_DFOE
CLKIN
FLAG11–0_IN
RD, WR
t_SFI
t_DWRFI
FLAG INPUT
t_DFO
t_HFO
t_DFO
FLAG OUTPUT
t_HFI
t_HFIWR
Figure 19. Flags
t_DFOD
–26–
REV. A