Freescale Semiconductor MPC8260 - Manual (Page 205)

System Interface Unit (SIU)
MPC8260 PowerQUICC II Family Reference Manual, Rev. 2
Freescale Semiconductor 4-33
4.3.2.6 SIU Module Configuration Register (SIUMCR)
The SIU module configuration register (SIUMCR), shown in Figure 4-28 , contains bits that configure
various features in the SIU module.
Table 4-12 describes SIUMCR fields.
0 3 4 7 8 11 12 15
Field Priority Field 8 Priority Field 9 Priority Field 10 Priority Field 11
Reset 1000 1001 1010 1011
R/W R/W
Addr 0x0x1003C
16 19 20 23 24 27 28 31
Field Priority Field 12 Priority Field 13 Priority Field 14 Priority Field 15
Reset 1100 1101 1110 1111
R/W R/W
Addr 0x1003E
Figure 4-27. LCL_ALRL
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Field BBD ESE PBSE CDIS DPPC L2CPC LBPC APPC CS10PC BCTLC
Reset see note 00 see note 00
R/W R/W
Addr 0x0x10000
16 17 18 19 31
Field MMR LPBSE —
Reset see note 0 see note
R/W R/W
Addr 0x10002
1 Depends on rest configuration sequence. See Section 5.4.1, “Hard Reset Configuration Word.”
Figure 4-28. SIU Model Configuration Register (SIUMCR)
Table 4-12. SIUMCR Register Field Descriptions
Bits Name Description
0 BBD Bus busy disable.
0 ABB/IRQ2 pin is ABB, DBB/IRQ3 pin is DBB
1 ABB/IRQ2 pin is IRQ2, DBB/IRQ3 pin is IRQ3
1 ESE External snoop enable. Configures GBL/IRQ1
0 External snooping disabled. (GBL/IRQ1 pin is IRQ1)
1 External snooping enabled. (GBL/IRQ1 pin is GBL)