TMS320VC5420
FIXED-POINT DIGITAL SIGNAL PROCESSOR
SPRS080C – MARCH 1999 – REVISED APRIL 2000
HPI16 timing (continued)
timing requirements [H = 0.5t
] (see Note 1 and Figure 35 – Figure 42)
c(CO)
MIN
5
MAX
UNIT
ns
†‡
Setup time, HAD valid before DS falling edge
t
t
su(HBV-DSL)
†‡
Hold time, HAD valid after DS falling edge
5
ns
h(DSL-HBV)
†
t
t
t
t
t
t
t
t
t
Setup time, HAD valid before HAS falling edge
5
5
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
su(HBV-HSL)
h(HSL-HBV)
su(HAV-DSH)
su(HAV-DSL)
h(DSH-HAV)
su(HSL-DSL)
h(HSL-DSL)
w(DSL)
†
Hold time, HAD valid after HAS falling edge
Setup time, address valid before DS rising edge (nonmultiplexed write)
Setup time, address valid before DS falling edge (nonmultiplexed mode)
5
‡
–4H – 5
1
‡
Hold time, address valid after DS rising edge (nonmultiplexed mode)
‡
Setup time, HAS low before DS falling edge
5
‡
Hold time, HAS low after DS falling edge
2
‡
Pulse duration, DS low
30
‡
Pulse duration, DS high
10
w(DSH)
Reads
Writes
Reads
Writes
Reads
Writes
12H
14H
18H
20H
26H
28H
Nonmultiplexed or multiplexed mode
(no increment) with no DMA activity.
Cycle time, DS rising edge to next DS Nonmultiplexed or multiplexed mode
‡
rising edge
(noincrement)with16-bitDMAactivity.
ns
Nonmultiplexed or multiplexed mode
(noincrement)with32-bitDMAactivity.
t
c(DSH-DSH)
Multiplexed (autoincrement) with no DMA
activity.
12H
18H
26H
ns
ns
ns
Cycle time, DS rising edge to next DS
rising edge
‡
Multiplexed (autoincrement) with 16-bit DMA
activity.
(In autoincrement mode, WRITE tim-
ings are the same as READ timings.)
Multiplexed (autoincrement) with 32-bit DMA
activity.
Cycle time, DS rising edge to next DS rising edge writes to DSPINT and HINT
8H
10
0
ns
ns
ns
ns
ns
‡
t
t
t
t
Setup time, HD valid before DS rising edge
su(HDV-DSH)
h(DSH-HDV)W
su(SELV-DSL)
h(DSH-SELV)
‡
Hold time, HD valid after DS rising edge, write
‡
Setup time, SELA/B valid before DS falling edge
5
‡
Hold time, SELA/B valid after DS Rising edge
0
†
‡
HAD stands for HCNTL0, HCNTL1, and HR/W.
DS refers to the logical OR of HCS and HDS.
68
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