Freescale Semiconductor MPC8250, Family Reference Manual

Page: 193 / 1360

System Interface Unit (SIU)
MPC8260 PowerQUICC II Family Reference Manual, Rev. 2
Freescale Semiconductor 4-21
4.3.1.4 SIU Interrupt Pending Registers (SIPNR_H and SIPNR_L)
Each bit in the interrupt pending registers (SIPNR_H and SIPNR_L), shown in Figure 4-14 and
Figure 4-15 , corresponds to an interrupt source. When an interrupt is received, the interrupt controller sets
the corresponding SIPNR bit.
Figure 4-15 shows SIPNR_L fields.
Table 4-7. SCPRR_L Field Descriptions
Bits Name Description
0–2 YC1P–YCC1 Priority order. Defines which SCC asserts its request in the YCC1 priority position. Do not
program the same SCC to multiple priority positions. This field can be changed dynamically.
000 SCC1 asserts its request in the YCC1 position.
001 SCC2 asserts its request in the YCC1 position.
010 SCC3 asserts its request in the YCC1 position.
011 SCC4 asserts its request in the YCC1 position.
100 TC layer asserts its request in the YCC1 position (MPC8264 and MPC8266 only).
Reserved on other devices.
1XX YCC1 position is not active.
3–11 YC2P–YC8P Same as YC1P, but for YCC2–YCC8
12–15 — Reserved, should be cleared.
16–27 YC5P–YC8P Same as YC1P, but for YCC5–YCC8
28–31 — Reserved, should be cleared.
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Field PC0 PC1 PC2 PC3 PC4 PC5 PC6 PC7 PC8 PC9 PC10 PC11 PC12 PC13 PC14 PC15
Reset Undefined (the user should write 1s to clear these bits before using)
R/W R/W
Addr 0x0x10C08
16 17 18 19 20 21 22 23 24 28 29 30 31
Field — IRQ1 IRQ2 IRQ3 IRQ4 IRQ5 IRQ6 IRQ7 — TMCNT PIT PCI
2
Reset Undefined (the user should write 1s to clear these bits before using) 0
1
0
1
0
1
R/W R/W
Addr 0x10C10
1
These fields are zero after reset because their corresponding mask register bits are cleared (disabled).
2
MPC8250, MPC8265, and MPC8266 only. Reserved on all other devices.
Figure 4-14. SIPNR_H