IEEE 1149.1-Compliant Interface (JTAG)
MPC561/MPC563 Reference Manual, Rev. 1.2
25-4
Freescale Semiconductor
25.1.2.1
TAP Controller
The TAP controller is responsible for interpreting the sequence of logical values on the TMS signal. It is
a synchronous state machine that controls the operation of the JTAG logic. The state machine is shown in
. The value shown adjacent to each arc represents the value of the TMS signal sampled on the
rising edge of the TCK signal.
Figure 25-4. TAP Controller State Machine
25.1.2.2
Boundary Scan Register
The MPC561/MPC563 scan chain implementation has a 427-bit (MPC563) or 423-bit (MPC561)
boundary scan register. This register contains bits for most device signals, clock pins and associated
control signals. The XTAL, EXTAL and XFC pins are associated with analog signals and are not included
in the boundary scan register. The PORESET, HRESET, and SRESET pins are also excluded from the
boundary scan register.
TEST LOGIC
RESET
RUN-TEST/IDLE
SELECT-DR_SCAN
CAPTURE-DR
SHIFT-DR
EXIT1-DR
PAUSE-DR
EXIT2-DR
UPDATE-DR
SELECT-IR_SCAN
CAPTURE-IR
SHIFT-IR
EXIT1-IR
PAUSE-IR
EXIT2-IR
UPDATE-IR
0
0
0
0
1
1
1
0
0
0
0
1
1
1
1
1
0
0
1
1
1
1
1
0
0
0
0
1
0
1
0
0
Summary of Contents for MPC561
Page 84: ...MPC561 MPC563 Reference Manual Rev 1 2 lxxxiv Freescale Semiconductor...
Page 144: ...Signal Descriptions MPC561 MPC563 Reference Manual Rev 1 2 2 46 Freescale Semiconductor...
Page 206: ...Central Processing Unit MPC561 MPC563 Reference Manual Rev 1 2 3 62 Freescale Semiconductor...
Page 302: ...Reset MPC561 MPC563 Reference Manual Rev 1 2 7 14 Freescale Semiconductor...
Page 854: ...Time Processor Unit 3 MPC561 MPC563 Reference Manual Rev 1 2 19 24 Freescale Semiconductor...
Page 968: ...Development Support MPC561 MPC563 Reference Manual Rev 1 2 23 54 Freescale Semiconductor...
Page 1144: ...Internal Memory Map MPC561 MPC563 Reference Manual Rev 1 2 B 34 Freescale Semiconductor...
Page 1212: ...TPU3 ROM Functions MPC561 MPC563 Reference Manual Rev 1 2 D 60 Freescale Semiconductor...
Page 1216: ...Memory Access Timing MPC561 MPC563 Reference Manual Rev 1 2 E 4 Freescale Semiconductor...