System and Peripheral Control Registers
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SPNU563A–March 2018
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Architecture
2.5.1.47 System Test Abort Status Register (SYSTASR)
This register is shown in Figure 2-54 and described in Table 2-66.
Figure 2-54. System Test Abort Status Register (SYSTASR) (offset = E8h)
31 16
Reserved
R-0
15 5 4 0
Reserved EFUSE_Abort
R-0 R/WPC-X/0
LEGEND: R/W = Read/Write; R = Read only; WP = Write in privileged mode only; C = Clear; -X = value is unchanged after reset; -n =
value after reset
Table 2-66. System Test Abort Status Register (SYSTASR) Field Descriptions
Bit Field Value Description
31-5 Reserved 0 Reads return 0. Writes have no effect.
4-0 EFUSE_Abort Test Abort status flag. These bits are set when test abort occurred:
0
Read: The last operation (if any) completed successfully. This is also the value that the
error/status register is set to after reset.
1h Read: Controller times out because there is no last row sent from the FuseROM.
2h
Read: The autoload machine was started, either through the SYS_INITZ signal from the system or
the JTAG data register. In either case, the autoload machine did not find enough FuseROM data
to fill the scan chain.
3h
Read: The autoload machine was started, either through the SYS_INITZ signal from the system or
the JTAG data register. In either case, the autoload machine starts the scan chain with a signature
it expects to see after the scan chain is full. The autoload machine was able to fill the scan chain,
but the wrong signature was returned.
4h
Read: The autoload machine was started, either through the SYS_INITZ signal from the system or
the JTAG data register. In either case, the autoload machine was not able or not allowed to
complete its operation.
Others Read: Reserved.
1Fh Write: These bits are cleared to 0.
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