Queued Serial Multi-Channel Module
MPC561/MPC563 Reference Manual, Rev. 1.2
Freescale Semiconductor
15-7
Because the QSMCM contains a mix of supervisor and user registers, AACK is asserted for either
supervisor or user mode accesses, and the bus cycle remains internal. If a supervisor-only register is
accessed in user mode, the module responds as if an access had been made to an unauthorized register
location, and a bus error is generated.
15.4.4
QSMCM Interrupts
The interrupt structure of the IMB3 supports a total of 32 interrupt levels that are time multiplexed on the
IRQB[0:7] lines as seen in
Figure 15-2. QSMCM Interrupt Levels
In this structure, all interrupt sources place their asserted level on a time multiplexed bus during four
different time slots, with eight levels communicated per slot. The ILBS[0:1] signals indicate which group
of eight are being driven on the interrupt request lines.
The QSMCM module is capable of generating one of the 32 possible interrupt levels on the IMB3. The
levels that the interrupt will drive can be programmed into the interrupt request level (ILDSCI and
ILQSPI) bits located in the interrupt configuration register (QDSCI_IL and QSPI_IL). This value
determines which interrupt signal (IRQB[0:7]) is driven onto the bus during the programmed time slot.
shows a block diagram of the interrupt hardware.
Table 15-3. Interrupt Levels
ILBS[0:1]
Levels
00
0:7
01
8:15
10
16:23
11
24:31
IMB3 CLOCK
ILBS[0:1]
IMB3 IRQ[7:0]
IRQ
7:0
00
01
11
10
IRQ
15:8
IRQ
23:16
IRQ
31:24
IRQ
7:0
00
01
11
10
Summary of Contents for MPC561
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Page 144: ...Signal Descriptions MPC561 MPC563 Reference Manual Rev 1 2 2 46 Freescale Semiconductor...
Page 206: ...Central Processing Unit MPC561 MPC563 Reference Manual Rev 1 2 3 62 Freescale Semiconductor...
Page 302: ...Reset MPC561 MPC563 Reference Manual Rev 1 2 7 14 Freescale Semiconductor...
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Page 1144: ...Internal Memory Map MPC561 MPC563 Reference Manual Rev 1 2 B 34 Freescale Semiconductor...
Page 1212: ...TPU3 ROM Functions MPC561 MPC563 Reference Manual Rev 1 2 D 60 Freescale Semiconductor...
Page 1216: ...Memory Access Timing MPC561 MPC563 Reference Manual Rev 1 2 E 4 Freescale Semiconductor...