MPC8308VMAGDA Freescale Semiconductor, MPC8308VMAGDA Datasheet - Page 27
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MPC8308VMAGDA
Manufacturer Part Number
MPC8308VMAGDA
Description
Microprocessors - MPU E300 MP PbFr 400
Manufacturer
Freescale Semiconductor
Datasheet
1.MPC8308VMAGDA.pdf
(83 pages)
Specifications of MPC8308VMAGDA
Rohs
yes
Processor Series
MPC8308
Core
e300
Maximum Clock Frequency
400 MHz
Interface Type
I2C, JTAG, UART
Operating Supply Voltage
0.95 V to 1.05 V
Maximum Operating Temperature
0 C to + 105 C
Mounting Style
SMD/SMT
Package / Case
MAPBGA-473
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MPC8308VMAGDA
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
10.2.1
Figure 16
Freescale Semiconductor
•
•
•
•
The supply voltage requirements for XCOREVDD are specified in
SerDes reference clock receiver reference circuit structure
— The SD_REF_CLK and SD_REF_CLK are internally AC-coupled differential inputs as shown
— The external reference clock driver must be able to drive this termination.
— The SerDes reference clock input can be either differential or single-ended. Refer to the
The maximum average current requirement that also determines the common mode voltage range
— When the SerDes reference clock differential inputs are DC coupled externally with the clock
— This current limitation sets the maximum common mode input voltage to be less than 0.4 V
— If the device driving the SD_REF_CLK and SD_REF_CLK inputs cannot drive 50 to
The input amplitude requirement
— This requirement is described in detail in the following sections.
shows a receiver reference diagram of the SerDes reference clocks.
in
termination to XCOREVSS followed by on-chip AC-coupling.
Differential Mode and Single-ended Mode description below for further detailed requirements.
driver chip, the maximum average current allowed for each input pin is 8mA. In this case, the
exact common mode input voltage is not critical as long as it is within the range allowed by the
maximum average current of 8 mA (refer to the following bullet for more detail), since the
input is AC-coupled on-chip.
(0.4 V/50 = 8 mA) while the minimum common mode input level is 0.1 V above XCOREVSS.
For example, a clock with a 50/50 duty cycle can be produced by a clock driver with output
driven by its current source from 0mA to 16mA (0–0.8 V), such that each phase of the
differential input has a single-ended swing from 0 V to 800 mV with the common mode voltage
at 400mV.
XCOREVSS DC, or it exceeds the maximum input current limitations, then it must be
AC-coupled off-chip.
SerDes Reference Clock Receiver Characteristics
Figure
16. Each differential clock input (SD_REF_CLK or SD_REF_CLK) has a 50-
MPC8308 PowerQUICC II Pro Processor Hardware Specification, Rev. 3
Figure 16. Receiver of SerDes Reference Clocks
SD_REF_CLK
SD_REF_CLK
50
50
Input
Amp
Table 1
High-Speed Serial Interfaces (HSSI)
and
Table
2.
27