DSPB56367AG150 Datasheet, PDF (32/100 Pages) Freescale Semiconductor, Inc – 24-Bit Audio Digital Signal Processor

Reset, Stop, Mode Select, and Interrupt Timing
Table 3-7 Reset, Stop, Mode Select, and Interrupt Timing¹ (continued)
No.
Characteristics
Expression
Min Max Unit
21 Delay from WR assertion to interrupt request deassertion for
level sensitive fast interrupts^{5, 6, 7}
• DRAM for all WS
• SRAM WS = 1
• SRAM WS = 2, 3
• SRAM WS ≥ 4
22 Synchronous int setup time from IRQs NMI assertion to the
CLKOUT trans.
(WS + 3.5) × T_C – 10.94
N/A
1.75 × T_C – 4.0
2.75 × T_C – 4.0
0.6 × T_C – 0.1
ns
— Note 8
— Note 8
— Note 8
— Note 8
3.9
—
ns
23 Synch. int delay time from the CLKOUT trans2 to the first
external address out valid caused by first inst fetch
• Minimum
• Maximum
9.25 × T_C + 1.0
24.75 × T_C + 5.0
ns
62.7 —
— 170.0
24 Duration for IRQA assertion to recover from Stop state
0.6 × T_C − 0.1
3.9
—
ns
25 Delay from IRQA assertion to fetch of first instruction (when
exiting Stop)^{2, 8}
• PLL is not active during Stop (PCTL Bit 17 = 0) and Stop PLC × ET_C × PDF + (128 K —
—
ms
delay is enabled (OMR Bit 6 = 0)
− PLC/2) × T_C
• PLL is not active during Stop (PCTL Bit 17 = 0) and Stop PLC × ET_C × PDF + (23.75 —
—
ms
delay is not enabled (OMR Bit 6 = 1)
+/- 0.5) × T_C
• PLL is active during Stop (PCTL Bit 17 = 1) (Implies No
Stop Delay)
(8.25 ± 0.5) × T_C
51.7 58.3 ns
26 Duration of level sensitive IRQA assertion to ensure interrupt
service (when exiting Stop)^{2, 8}
• PLL is not active during Stop (PCTL Bit 17 = 0) and Stop PLC × ET_C × PDF + (128 K —
—
ms
delay is enabled (OMR Bit 6 = 0)
− PLC/2) × T_C
• PLL is not active during Stop (PCTL Bit 17 = 0) and Stop PLC × ET_C × PDF + (20.5 —
—
ms
delay is not enabled (OMR Bit 6 = 1)
+/- 0.5) × T_C
• PLL is active during Stop (PCTL Bit 17 = 1) (implies no
Stop delay)
5.5 × T_C
36.7 —
ns
27 Interrupt Requests Rate
• HDI08, ESAI, ESAI_1, SHI, DAX, Timer
• DMA
• IRQ, NMI (edge trigger)
• IRQ (level trigger)
12T_C
8T_C
8T_C
12T_C
ns
— 80.0
— 53.0
— 53.0
— 80.0
DSP56367 Technical Data, Rev. 2.1
3-8
Freescale Semiconductor