EP2C20F256C8N Datasheet, PDF (433/470 Pages) Altera Corporation – Cyclone II Device Handbook, Volume 1

IEEE 1149.1 (JTAG) Boundary-Scan Testing for Cyclone II Devices
Figure 14–5. IEEE Std. 1149.1 TAP Controller State Machine
TEST_LOGIC/
TMS = 1 RESET
TMS = 0
TMS = 1
RUN_TEST/
TMS = 0
IDLE
TMS = 0
SELECT_DR_SCAN
TMS = 1
TMS = 1 _{SELECT_IR_SCAN}
TMS = 0
TMS = 1
CAPTURE_DR
TMS = 1
CAPTURE_IR
TMS = 0
TMS = 0
SHIFT_DR
TMS = 0
TMS = 1
TMS = 1
EXIT1_DR
TMS = 0
SHIFT_IR
TMS = 0
TMS = 1
EXIT1_IR
TMS = 1
TMS = 0
PAUSE_DR
TMS = 0
TMS = 1
TMS = 0
EXIT2_DR
PAUSE_IR
TMS = 0
TMS = 1
TMS = 0
EXIT2_IR
TMS = 1
TMS = 1
UPDATE_DR
TMS = 0
TMS = 1
TMS = 1
UPDATE_IR
TMS = 0
Altera Corporation
February 2007
14–7
Cyclone II Device Handbook, Volume 1