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Operating Modes Scan Bridge – SCANSTA112 addressed by Level 1 protocol. Set up by register settings. Stitcher – n

Specifications
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Content	Operating Modes Scan Bridge – SCANSTA112 addressed by Level 1 protocol. Set up by register settings. Stitcher – no Level 1 protocol; always addressed. Set up by pins or register settings. Normal (not transparent) – instruction register in scan chain. Responds to most JTAG instructions. Pad bit between TDI and TDO on each local scan port. Full Transparent – instruction register not accessible. No re- sponse to JTAG instructions. No pad bits between TDI and TDO. Transparent Local Scan Port (LSP) – instruction register in scan chain. Responds to most JTAG instructions. Pad bit between TDI and TDO on last LSP. Mode Availability • Normal and full transparent modes are available in both Scan Bridge and Stitcher modes. • Transparent LSP mode in Scan Bridge mode only. • Full transparent mode can be exited only by reset. Reset Sequence ResetIgnoreResetNormalTransparent RESET 0Full resetFull reset RESET 1Full resetFull reset TRST 0Full resetFull reset TRST 1IgnoredIgnored 5-High TMS0Full resetIgnored 5-High TMS1IgnoredIgnored Addressing After Reset Scan Bridge mode – Scan instruction register; data = slot address Stitcher mode – always active; no addressing Address Space Address TypeHex AddressTDOB State Direct address0x00 to 0x39 0x40 to 0xFFNormal per 1149.1 std. Interrogation0x3AAddress out (see AN-1259) Broadcast0x3BTRI-STATE® Multi-Cast 00x3CTRI-STATE Multi-Cast 10x3DTRI-STATE Multi-Cast 20x3ETRI-STATE Multi-Cast 30x3FTRI-STATE Registers NameBits Instruction register8 Boundary register22 Bypass register1 Device ID register32 Multi-Cast Group register2 Mode Register 08 Mode Register 18 Mode Register 28 Linear Feedback Shift Register (LFSR)16 TCK Counter register32 Shared GPIO(0-6) registers8 Control register8 Local Scan Port (LSP) Select register8 Register Access Instruction register – transition IEEE-1149.1 TAP controller to Capture-IR/Shift-IR state Boundary register – EXTEST or SAMPLE/PRELOAD Bypass register – BYPASS Device ID register – IDCODE, UNPARK, PARKTLR, PARKRTI, PARKPAUSE, GOTOWAIT, LFSRON, LFSROFF, CNTRON, CNTROFF Multi-Cast Group register – MCGRSEL Mode Register 0 – MODESEL Mode Register 1 – MODESEL1 Mode Register 2 – MODESEL2 LFSR - LFSRSEL TCK Counter register – CNTRSEL Shared GPIO(0-6) registers – SGPIOn Control register – CONTROLSEL LSP Select register – LSPSEL Op-Codes InstructionOp-CodeDescription BYPASS0xFFBypass register EXTEST0x00Boundary register SAMPLE/PRE- LOAD0x81Boundary register IDCODE0xAADevice ID register UNPARK0xE7Unparks LSPs PARKTLR0xC5Parks LSPs in TLR PARKRTI0x84Parks LSPs in RTI PARKPAUSE0xC6Parks LSPs in Pause-IR or Pause-DR; Unparks parked LSPs GOTOWAIT0xC3Sends all SCANSTA112s to wait for address MODESEL0x8EMode Register 0 MODESEL10x82Mode Register 1 MODESEL20x83Mode Register 2 MCGRSEL0x03Multi-Cast Group register SOFTRESET0x88Parks all LSPs in TLR LFSRSEL0xC9LFSR LFSRON0x0CAccumulates signature LFSROFF0x8DStops signature accumulation CNTRSEL0xCETCK Counter register CNTRON0x0FEnables TCK counter CNTROFF0x90Disables TCK counter DEFAULT_ BYPASS0x07Sets bypass register as default data register SCANSTA112 Quick Reference
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Following Datasheets	SCC-1 (1 pages) SCC2681 (29 pages) SCC2681T (15 pages) SCC2691 (25 pages) SCC2692 (30 pages) SCC2698B (29 pages) SCC68681 (29 pages) SCC68692 (28 pages) SCCLSUBWBR1 (8 pages) SCCLZBR2 (8 pages)
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