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MMC2107 - Freescale Semiconductor

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<strong>Freescale</strong> <strong>Semiconductor</strong>, Inc.<br />

Technical Data — <strong>MMC2107</strong><br />

Section 21. JTAG Test Access Port and OnCE<br />

21.1 Contents<br />

nc...<br />

<strong>Freescale</strong> <strong>Semiconductor</strong>, I<br />

21.2 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .535<br />

21.3 Top-Level Test Access Port (TAP) . . . . . . . . . . . . . . . . . . . .537<br />

21.3.1 Test Clock (TCLK) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .538<br />

21.3.2 Test Mode Select (TMS) . . . . . . . . . . . . . . . . . . . . . . . . .538<br />

21.3.3 Test Data Input (TDI) . . . . . . . . . . . . . . . . . . . . . . . . . . . .538<br />

21.3.4 Test Data Output (TDO). . . . . . . . . . . . . . . . . . . . . . . . . .538<br />

21.3.5 Test Reset (TRST) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .538<br />

21.3.6 Debug Event (DE) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .538<br />

21.4 Top-Level TAP Controller. . . . . . . . . . . . . . . . . . . . . . . . . . .540<br />

21.5 Instruction Shift Register . . . . . . . . . . . . . . . . . . . . . . . . . . .541<br />

21.5.1 EXTEST Instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . .541<br />

21.5.2 IDCODE Instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . .542<br />

21.5.3 SAMPLE/PRELOAD Instruction. . . . . . . . . . . . . . . . . . . .543<br />

21.5.4 ENABLE_MCU_ONCE Instruction. . . . . . . . . . . . . . . . . .543<br />

21.5.5 HIGHZ Instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .544<br />

21.5.6 CLAMP Instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .544<br />

21.5.7 BYPASS Instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . .544<br />

21.6 IDCODE Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .545<br />

21.7 Bypass Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .546<br />

21.8 Boundary SCAN Register. . . . . . . . . . . . . . . . . . . . . . . . . . .546<br />

21.9 Restrictions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .546<br />

21.10 Non-Scan Chain Operation . . . . . . . . . . . . . . . . . . . . . . . . .547<br />

21.11 Boundary Scan. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .547<br />

21.12 Low-Level TAP (OnCE) Module . . . . . . . . . . . . . . . . . . . . . .553<br />

21.13 Signal Descriptions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .555<br />

21.13.1 Debug Serial Input (TDI) . . . . . . . . . . . . . . . . . . . . . . . . .555<br />

21.13.2 Debug Serial Clock (TCLK) . . . . . . . . . . . . . . . . . . . . . . .555<br />

21.13.3 Debug Serial Output (TDO) . . . . . . . . . . . . . . . . . . . . . . .555<br />

<strong>MMC2107</strong> – Rev. 2.0 Technical Data<br />

MOTOROLA JTAG Test Access Port and OnCE 533<br />

For More Information On This Product,<br />

Go to: www.freescale.com

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