SPRA545A
Table 7. Timing Requirements for MC68360 Interfaced to the C6211/C6711 HPI
HPI
MC68360 Symbol
Symbol
t
t
oh(HSTBH-HDV)
SNDI
2* P
- t
M
CLSA
t
DICL
- t
d(HSTBL-HDV)
NOTE: P M = Period of MC68360 clock = 40 ns @ 25 MHz.
HPI Symbol
MC68360 Symbol
t
t
su(SEL-HSTBL)
AVSA
t
t
+ t
h(HSTBL-SEL)
SNAI
SWA
t
t
w(HSTBL)
SWA
t
t
w(HSTBH)
SN
1.5*P
– t
M
t
su(HDV-HSTBH)
+ t
CLSN
t
t
h(HSTBH-HDV)
SNDOI
t
0.5* P
+ t
h(HRDYL-HSTBL)
M
NOTE: P H = Period of TMS320C64x DSP clock = 2.5 ns @ 400 MHz.
P M = Period of MC68360 clock = 40 ns @ 25 MHz.
NOTE: The timing specifications above are preliminary and the actual numbers may vary with a TMS part. Please refer to the latest datasheet
for numbers.
Table 9. Timing Requirements for MC68360 Interfaced to the C64x HPI
HPI
MC68360
Symbol
Symbol
t
t
oh(HSTBH-HDV)
SNDI
2* P
- t
M
CLSA
t
DICL
- t
d(HSTBL-HDV)
NOTE: P M = Period of MC68360 clock = 40 ns @ 25 MHz.
NOTE: The timing specifications above are preliminary and the actual numbers may vary with a TMS part. Please refer to the latest datasheet
for numbers.
3
References
1. TMS320C6200 Peripherals Reference Guide (SPRU190).
2. TMS320C6201 Digital Signal Processor (SPRS051).
3. TMS320C6701 Floating-Point Digital Signal Processor (SPRS067).
4. TMS320C6211, TMS320C6211B Fixed-Point Digital Signal Processors (SPRS073).
5. TMS320C6416 Fixed-Point Digital Signal Processor (SPRS164).
6. MC68360 Quad Integrated Communications Controller User's Manual, Motorola, Inc.
12
TMS320C6000 Host Port to MC68360 Interface
Hold time, input data from CS negated
Read set-up time, data-in valid to clock low
Table 8. Timing Requirements for the C64x HPI
Setup time, select signals valid before HSTROBE low
Hold time, select signals valid after HSTROBE low
Pulse duration, HSTROBE low
Pulse duration, HSTROBE high
CHDO
Setup time, host data valid before HSTROBE high
Hold time, host data valid after HSTROBE high
Hold time, HSTROBE low after HRDY low
CLSN
Hold time, input data from CS negated
Read set-up time, data-in valid to clock low
Min HPI
Min
(ns)
MC68360 (ns)
2
0
52
1
Min
Min
HPI (ns)
MC68360 (ns)
4
10
2
85
4*P
= 10
75
H
4*P
= 10
35
H
5
41
2
10
2
24
Min HPI
Min
(ns)
MC68360 (ns)
2
0
52
1
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