Chapter 11. Embedded Programmable Interrupt Controller (EPIC) Unit
11-19
Register Definitions
11.9.5 Processor Initialization Register (PI)
The processor initialization register (PI) provides a mechanism for the software, through
the EPIC unit, to cause a soft reset of the processor by asserting the sreset signal. Note that
this register is read/write. Figure 11-8 shows the bits in the PI.
Figure 11-8. Processor Initialization Register (PI)
Table 11-9 describes the bit settings for the PI.
11.9.6 Spurious Vector Register (SVR)
The spurious vector register contains the 8-bit vector returned to the processor during an
interrupt acknowledge cycle for the cases described in Section 11.3.5, “Spurious Vector
Generation.” Note that this register is read/write. Figure 11-9 shows the bits in the SVR.
Figure 11-9. Spurious Vector Register (SVR)
Table 11-9. PI Register Field Descriptions—Offset 0x4_1090
Bits
Name
Reset
Value
Description
31–1
—
All 0s
Reserved
0
P0
0
Processor 0 soft reset
0 Default value
1 Setting this bit causes the EPIC unit to assert the internal sreset signal to the
processor core, causing a soft reset exception. The sreset signal is edge-sensitive to
the processor, but it is held active until a zero is written to P0. Thus, it should be
cleared by software as soon as possible in the soft reset exception handler.
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
31
1
0
Reserved
P0
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
VECTOR
31
8
7
0
Reserved
Summary of Contents for MPC8240
Page 1: ...MPC8240UM D Rev 1 1 2001 MPC8240 Integrated Processor User s Manual ...
Page 38: ...xviii MPC8240 Integrated Processor User s Manual TABLES Table Number Title Page Number ...
Page 48: ...xlviii MPC8240 Integrated Processor User s Manual Acronyms and Abbreviations ...
Page 312: ...6 94 MPC8240 Integrated Processor User s Manual ROM Flash Interface Operation ...
Page 348: ...7 36 MPC8240 Integrated Processor User s Manual PCI Host and Agent Modes ...
Page 372: ...8 24 MPC8240 Integrated Processor User s Manual DMA Register Descriptions ...
Page 394: ...9 22 MPC8240 Integrated Processor User s Manual I2O Interface ...
Page 412: ...10 18 MPC8240 Integrated Processor User s Manual Programming Guidelines ...
Page 454: ...12 14 MPC8240 Integrated Processor User s Manual Internal Arbitration ...
Page 466: ...13 12 MPC8240 Integrated Processor User s Manual Exception Latencies ...
Page 516: ...16 14 Watchpoint Trigger Applications ...
Page 538: ...B 16 MPC8240 Integrated Processor User s Manual Setting the Endian Mode of Operation ...
Page 546: ...C 8 MPC8240 Integrated Processor User s Manual ...
Page 640: ...INDEX Index 16 MPC8240 Integrated Processor User s Manual ...