MSC8113 Reference Manual, Rev. 0
18-2
Freescale Semiconductor
Debugging
18.1 Overview
The MSC8113 TAP consists of five dedicated signal lines, a 16-state TAP controller, and three
test data registers. A Boundary Scan Register (BSR) links most of the device signal connections
into a single shift register. The test logic, which uses static logic design, is independent of the
device system logic. The MSC8113 JTAG can do the following:
Perform boundary scan operations to check circuit-board electrical continuity.
Bypass the MSC8113 for a given circuit-board test by effectively reducing the Boundary
Scan Register (BSR) to a single cell.
Sample the MSC8113 system connections during operation and transparently shift out the
result in the BSR. Preload values to outputs prior to circuit board testing.
Disable the drive to outputs during circuit board testing.
Access the EOnCE controller and circuits to control a target system.
Give entry to Debug mode.
Query identification information (manufacturer, part number and version) from an
MSC8113-based device.
Force test data onto the outputs of an MSC8113-based device while replacing its BSR in
the serial data path with a single-bit register.
Note:
Precautions must be taken to ensure that the IEEE Std. 1149.1-like test logic does not
interfere with non-test operation.
To access the JTAG registers, shift the appropriate command into the JTAG instruction register
and then shift the required value into the register. See Section 18.3 for a discussion of the JTAG
instructions. Figure 18-1 shows the MSC8113 JTAG 5-bit instruction register and the following
test registers:
Boundary Scan Register (BSR). Regarding the length of the BSR, The boundary scan bit
definitions vary according to the specific chip implementation of the MSC8113 and are
described by the BSDL file on the product website
1-bit Bypass Register
32-bit Identification Register (ID)
32-bit General Purpose Register (GPR)
32-bit Parallel Input Register (PIREG)
Table 18-1 lists the test access port (TAP) signals.
Summary of Contents for MSC8113
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Page 56: ...MSC8113 Reference Manual Rev 0 1 28 Freescale Semiconductor MSC8113 Overview ...
Page 76: ...MSC8113 Reference Manual Rev 0 2 20 Freescale Semiconductor SC140 Core Overview ...
Page 134: ...MSC8113 Reference Manual Rev 0 4 30 Freescale Semiconductor System Interface Unit SIU ...
Page 168: ...MSC8113 Reference Manual Rev 0 6 18 Freescale Semiconductor Boot Program ...
Page 180: ...MSC8113 Reference Manual Rev 0 7 12 Freescale Semiconductor Clocks ...
Page 260: ...MSC8113 Reference Manual Rev 0 8 80 Freescale Semiconductor Memory Map ...
Page 300: ...MSC8113 Reference Manual Rev 0 9 40 Freescale Semiconductor Extended Core ...
Page 304: ...MSC8113 Reference Manual Rev 0 10 4 Freescale Semiconductor MQBus and M2 Memory ...
Page 308: ...MSC8113 Reference Manual Rev 0 11 4 Freescale Semiconductor SQBus ...
Page 590: ...MSC8113 Reference Manual Rev 0 17 46 Freescale Semiconductor Interrupt Processing ...
Page 614: ...MSC8113 Reference Manual Rev 0 18 24 Freescale Semiconductor Debugging ...
Page 622: ...MSC8113 Reference Manual Rev 0 19 8 Freescale Semiconductor Internal Peripheral Bus IPBus ...
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Page 920: ...MSC8113 Reference Manual Rev 0 25 150 Freescale Semiconductor Ethernet Controller ...
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Page 1172: ...MSC8113 Reference Manual Rev 0 C 62 Freescale Semiconductor MSC8113 Boot Code ...
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