MPC8313ECZQADDC Freescale Semiconductor, MPC8313ECZQADDC Datasheet - Page 286
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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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System Configuration
5.8.3.5.1
Entering Doze mode is controlled only by the e300 PowerPC core itself, and does not involve the power
management controller or other blocks. For a more detailed description, see
Entering Nap or Sleep modes occurs by writing to HID0 in the core, causing the core to make a quiesce
request to the power management controller while PMCCR[SLPEN] is cleared. The core is immediately
enabled to enter low power state, regardless of the system status. Note that since the core does not snoop
the bus in this mode, it is the user’s responsibility to keep the cache coherent. Other device peripheral and
internal units continue to operate in full-on mode while the core is in low power state in this mode.
5.8.3.5.2
Core and system mode is achieved when the core makes a quiesce request to the power management
controller after PMCCR[SLPEN] is set. To preserve cache coherency and otherwise avoid loss of system
state, the core’s transition to low-power modes is coordinated with other functional blocks. The power
management controller allows the core to enter power down mode only when the rest of the system is idle.
When the power management controller detects that the internal system bus is idle, and there are no
outstanding transactions, it signals the internal logic units to enter low power state.
If PMCCR[DLPEN] is set, the DDR SDRAM is first set to self-refresh mode (if enabled by
DDR_SDRAM_CFG[SREN] memory controller register) before the memory controller stops driving
refresh commands. Self-refresh mode guarantees that the memory content will remain valid while the
memory controller and its clocks are off. The DDR clocks are then disabled. Finally the DDR SDRAM
memory controller enters low power state and acknowledges the power management controller.
The power management controller then signals the core and acknowledges it’s request to enter power
down mode. Finally the QUIESCE output signal is asserted.
5-78
OWER_OFF
(PMCCR[SL
(PMCCR[SL
PMCCR1[P
Low Power
PEN]=1),
PEN]=1)
System
Lowest
Power
Mode
] = 1
Table 5-74. Software-Controller Power-Down States—Basic Description (continued)
Power
Mode
Sleep
Sleep
Deep
Core
Nap
Off,
MPC8313E PowerQUICC™ II Pro Integrated Processor Family Reference Manual, Rev. 2
Entering Low Power States—Core-Only Mode
Entering Low Power States—Core and System Mode
PCI D- state
PCIPMR1[P
owerState]=
PCIPMR1[P
owerState]=
PCIPMR1[P
owerState]=
Suggested
D3Warm
D3
D3
11
11
11
Core operation as described above. System
is in idle state, DDR SDRAM memory
operates in self-refresh mode if
enabled.
Core operation as described above. System
is in idle state, DDR SDRAM memory
operates in self-refresh mode if
enabled.
This state is an extension of the above low
power modes where power can be removed
to a portion of the device die using an
external power switch. Software enters core
“Sleep” mode with
PMCCR1[POWER_OFF] = 1. Wake-up is in
response to defined Wake-up events.
Description
Snoop Interrupt
Core Responds
No
No
No
to
Table 7-1.
Yes
Yes
No
Freescale Semiconductor
PMCCR[D
PMCCR[D
PMCCR[D
LPEN] = 1
According
According
strl state
SDRAM
LPEN]
LPEN]
DDR
to
to
Asserted
Asserted
Asserted
Quiesce
Signal
State
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