MPC8313ECZQADDC Freescale Semiconductor, MPC8313ECZQADDC Datasheet - Page 297
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MPC8313ECZQADDC
Manufacturer Part Number
MPC8313ECZQADDC
Description
Microprocessors - MPU 8313 REV2.2 PB ENC EXT
Manufacturer
Freescale Semiconductor
Datasheet
1.MPC8313CZQADDC.pdf
(1214 pages)
Specifications of MPC8313ECZQADDC
Processor Series
MPC8313E
Core
e300
Data Bus Width
16 bit
Maximum Clock Frequency
133 MHz
Program Memory Size
16 KB
Data Ram Size
16 KB
Interface Type
I2C
Mounting Style
SMD/SMT
Package / Case
PBGA
Number Of Programmable I/os
32
Number Of Timers
4
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PMC Wake-Up When the MPC8313E is a PCI Host
This sequence assumes the device is a PCI host in D3Warm state. Power is off (0v) on the VDD voltage
supply. The PMC is programed to wake on one of its wake-events: Ethernet magic packet, GPIO, USB,
internal timer, external interrupt, or PCI_PME from an external PCI agent. The PMCCR1[PME_EN] bit
is reset, indicating the device is a host (PCI_PME is an input).
Steps to wake up the device are as follows.
5.8.3.7.3
The following diagrams show the assumed scenarios for controlling the power supply to the device. An
external means is required to switch off the VDD supply in low power mode. A commercial power switch
can be used but there is usually a switching delay associated with these devices, sometimes around 1 ms.
A cheaper and faster solution is to use a FET, as shown in
PMCCR2[RCNT] and PMCCR2[PDCNT] timer fields will allow calibration of the device to the switching
characteristics of the power switch.
Freescale Semiconductor
1. A wake-up event occurs and sets the corresponding wake-up event bit in the PMCER[x] register.
2. The wake-up event in the PMCER[x] register triggers the PMC to begin the wake-up process. It
3. From this point the sequence is similar to the agent power-up sequence described in the previous
4. Once the e300 boots up and the IPIC has been initialized, the source of the interrupt can be detected
5. The e300 clears the on-chip IPIC, PMC interrupts, and wake-up events.
This event will trigger an interrupt from the PMC to the IPIC controller if not masked. This
interrupt will not be serviced by the e300 until it wakes up from D3Warm. The PMCER[x] bit
remains set until cleared by e300 software.
asserts EXT_PWR_CTRL to the external power supply switch. This applies power to the VDD
power rail.
section, Step 5 on.
from the PMC registers. The e300 will then reset the source of the wake-up. The source of the
interrupt may be an on-chip device (eTSEC, USB, or GPIO) or an off chip device (agent) that
asserted PCI_PME. An external PCI agent may need to have its power state changed and be
initialized.
MPC8313E PowerQUICC™ II Pro Integrated Processor Family Reference Manual, Rev. 2
PMC External Power Supply Control
Figure 5-58
and
Figure
5-59. The use of the
System Configuration
5-89
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