Mips Technologies R4000 - Page 27

MIPS R4000 Microprocessor User's Manual xxvii
Table of Contents
14
JTAG Interface
What Boundary Scanning Is ...................................................................................390
Signal Summary .......................................................................................................391
JTAG Controller and Registers...............................................................................392
Instruction Register.............................................................................................. 392
Bypass Register.....................................................................................................393
Boundary-Scan Register......................................................................................394
Test Access Port (TAP)........................................................................................ 395
TAP Controller.................................................................................................396
Controller Reset ............................................................................................... 396
Controller States............................................................................................... 396
Implementation-Specific Details............................................................................400
15
R4000 Processor Interrupts
Hardware Interrupts................................................................................................402
Nonmaskable Interrupt (NMI)...............................................................................402
Asserting Interrupts.................................................................................................402