3-12
DSP56367
MOTOROLA
Specifications
Reset, Stop, Mode Select, and Interrupt Timing
29
Delay from IRQA, IRQB, IRQC, IRQD, NMI assertion to
external memory (DMA source) access address out valid
4.25
×
T
C
+ 2.0
37.4
—
ns
Note:
1.
When using fast interrupts and IRQA, IRQB, IRQC, and IRQD are defined as level-sensitive,
timings 19 through 21 apply to prevent multiple interrupt service. To avoid these timing
restrictions, the deasserted Edge-triggered mode is recommended when using fast interrupts.
Long interrupts are recommended when using Level-sensitive mode.
2.
This timing depends on several settings:
For PLL disable, using external clock (PCTL Bit 16 = 1), no stabilization delay is required and
recovery time will be defined by the PCTL Bit 17 and OMR Bit 6 settings.
For PLL enable, if PCTL Bit 17 is 0, the PLL is shutdown during Stop. Recovering from Stop
requires the PLL to get locked. The PLL lock procedure duration, PLL Lock Cycles (PLC),
may be in the range of 0 to 1000 cycles. This procedure occurs in parallel with the stop delay
counter, and stop recovery will end when the last of these two events occurs: the stop delay
counter completes count or PLL lock procedure completion.
PLC value for PLL disable is 0.
The maximum value for ET
C
is 4096 (maximum MF) divided by the desired internal
frequency (i.e., for 150 MHz it is 4096/150 MHz = 27.3
µ
s). During the stabilization period,
T
C
, T
H,
and T
L
will not be constant, and their width may vary, so timing may vary as well.
3.
Periodically sampled and not 100% tested
4.
RESET duration is measured during the time in which RESET is asserted, V
CC
is valid, and
the EXTAL input is active and valid. When the V
CC
is valid, but the other “required RESET
duration” conditions (as specified above) have not been yet met, the device circuitry will be in
an uninitialized state that can result in significant power consumption and heat-up. Designs
should minimize this state to the shortest possible duration.
5.
If PLL does not lose lock
6.
V
CC
= 1.8 V
±
5%; T
J
= 0°C to + 95°C, C
L
= 50 pF
7.
WS = number of wait states (measured in clock cycles, number of T
C
). Use expression to
compute maximum value.
Table 3-7 Reset, Stop, Mode Select, and Interrupt Timing
No.
Characteristics
Expression
Min
Max
Unit
Summary of Contents for DSP56367
Page 16: ...xvi MOTOROLA CONTENTS Paragraph Number Title Page Number ...
Page 22: ...xxii MOTOROLA List of Figures Figure Number Title Page Number ...
Page 26: ...xxvi MOTOROLA List of Tables Table Number Title Page Number ...
Page 148: ...4 6 DSP56367 MOTOROLA Design Considerations PLL Performance Issues ...
Page 248: ...9 30 DSP56367 MOTOROLA Serial Host Interface SHI Programming Considerations ...
Page 306: ...10 58 DSP56367 MOTOROLA Enhanced Serial Audio Interface ESAI ESAI Initialization Examples ...
Page 389: ...Bootstrap ROM Contents MOTOROLA DSP56367 A 15 end ...
Page 390: ...A 16 DSP56367 MOTOROLA Bootstrap ROM Contents ...
Page 432: ...C 8 DSP56367 MOTOROLA JTAG BSDL ...
Page 484: ...D 52 DSP56367 MOTOROLA Programmer s Reference ...
Page 490: ...E 6 DSP56367 MOTOROLA Power Consumption Benchmark ...
Page 516: ...F 26 DSP56367 MOTOROLA IBIS Model ...
Page 522: ...Index 6 MOTOROLA Index ...
Page 523: ......