Cirrus-logic CS61584A Manuale Utente Scaricare il pdf (Pagina 37)

CS61584A

DS261PP5 37

DS261PP5

TCK

TMS

Controller state

TDI

IR shift-register

Parallel output of IR

Parallel Input to TDR

TDR shift-register

Parallel output of TDR

TDO enable

TDO

Act

IDCODE New Instruction

Old data

Instruction register

Inactive ActiveInactive Inactive

= Don’t care or undefined

Parallel Input to IR

Test-Logic-Reset

Run-Test/Idle

Select-DR-Scan

Select-IR-Scan

Capture-IR

Pause-IR

Exit2-IR

Shift-IR

Exit1-IR

Update-IR

Run-Test/Idle

Exit1-IR

Shift-IR

Figure 25. JTAG Instruction Register update

CS61584A

DS261F1 37

1 2 ... 32 33 34 35 36 37 38 39 40 41 42 ... 53 54

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Cirrus-logic CS61584A Manuale Utente Pagina 37