MMC2107 - Freescale Semiconductor

Freescale Semiconductor, Inc.
Table of Contents
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Freescale Semiconductor, I
18.10.6 Single-Scan Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .467
18.10.6.1 Software-Initiated Single-Scan Mode. . . . . . . . . . . . . . .468
18.10.6.2 External Trigger Single-Scan Mode . . . . . . . . . . . . . . . .469
18.10.6.3 External Gated Single-Scan Mode. . . . . . . . . . . . . . . . .470
18.10.6.4 Interval Timer Single-Scan Mode. . . . . . . . . . . . . . . . . .470
18.10.7 Continuous-Scan Modes . . . . . . . . . . . . . . . . . . . . . . . . . .472
18.10.7.1 Software-Initiated Continuous-Scan Mode. . . . . . . . . . .473
18.10.7.2 External Trigger Continuous-Scan Mode. . . . . . . . . . . .474
18.10.7.3 External Gated Continuous-Scan Mode . . . . . . . . . . . .474
18.10.7.4 Periodic Timer Continuous-Scan Mode . . . . . . . . . . . . .475
18.10.8 QADC Clock (QCLK) Generation . . . . . . . . . . . . . . . . . . . .476
18.10.9 Periodic/Interval Timer . . . . . . . . . . . . . . . . . . . . . . . . . . . .480
18.10.10 Conversion Command Word Table . . . . . . . . . . . . . . . . . .481
18.10.11 Result Word Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .485
18.11 Pin Connection Considerations . . . . . . . . . . . . . . . . . . . . . . .486
18.11.1 Analog Reference Pins. . . . . . . . . . . . . . . . . . . . . . . . . . . .486
18.11.2 Analog Power Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .486
18.11.3 Conversion Timing Schemes . . . . . . . . . . . . . . . . . . . . . . .488
18.11.4 Analog Supply Filtering and Grounding . . . . . . . . . . . . . . .490
18.11.5 Accommodating Positive/Negative Stress Conditions . . . .494
18.11.6 Analog Input Considerations . . . . . . . . . . . . . . . . . . . . . . .495
18.11.7 Analog Input Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .497
18.11.7.1 Settling Time for the External Circuit . . . . . . . . . . . . . . .498
18.11.7.2 Error Resulting from Leakage . . . . . . . . . . . . . . . . . . . .499
18.12 Interrupts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .500
18.12.1 Interrupt Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .500
18.12.2 Interrupt Sources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .501
Section 19. External Bus Interface Module (EBI)
19.1 Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .503
19.2 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .504
19.3 Signal Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .505
19.3.1 Data Bus (D[31:0]) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .506
19.3.2 Show Cycle Strobe (SHS) . . . . . . . . . . . . . . . . . . . . . . . . .506
19.3.3 Transfer Acknowledge (TA) . . . . . . . . . . . . . . . . . . . . . . . .506
19.3.4 Transfer Error Acknowledge (TEA) . . . . . . . . . . . . . . . . . .506
MMC2107 – Rev. 2.0
Technical Data
MOTOROLA Table of Contents 23
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