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參數(shù)資料
| 型號： | MC92610VF |
| 廠商： | FREESCALE SEMICONDUCTOR INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | SPECIALTY MICROPROCESSOR CIRCUIT, PBGA324 |
| 封裝： | 19 X 19 MM, 1.76 MM HEIGHT, 1 MM PITCH, PLASTIC, MS-034AAG-1, MAPBGA-324 |
| 文件頁數(shù)： | 55/104頁 |
| 文件大小： | 1595K |
| 代理商： | MC92610VF |
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4-6
MC92610 SERDES User’s Manual
MOTOROLA
Power Supply Decoupling Recommendations
Figure 4-1. PLL Power Supply Filter Circuits
4.7
Power Supply Decoupling Recommendations
The MC92610 requires a clean, tightly regulated source of power to ensure low jitter on
transmit, and reliable recovery of data in the receiver. An appropriate decoupling scheme is
outlined below.
Only surface mount technology (SMT) capacitors should be used, to minimize inductance.
Connections from all capacitors to power and ground should be done with multiple vias to
further reduce inductance.
First, the board should have about 10 x 10nF SMT ceramic chip capacitors as close as
possible to the 1.8v (Vdd and XVdd) balls of the device. The board should also have about
10 x 10nF SMT ceramic chip capacitors as close as possible to the 1.5v (VDDQ) balls of the
device. Where the board has blind vias, these capacitors should be placed directly below
the MC92610 supply and ground connections. Where the board does not have blind vias,
these capacitors should be placed in a ring around the MC92610, as close to the supply and
ground connections as possible.
Second, there should be a 1uF ceramic chip capacitor on each side of the MC92610 device.
This should be done for both the 1.8v supply and the 1.5v supply.
Third, between the MC92610 device and the voltage regulator, there should be a 10uF, low
equivalent series resistance (ESR) SMT tantalum chip capacitor, and a 100uF, low ESR
SMT tantalum chip capacitor. This should be done for both the 1.8v supply and the 1.5v
supply.
4.8
HSTL Reference Voltage Recommendation
The MC92610 uses HSTL Class-I inputs and outputs for all of its high-frequency parallel
interface signals. The HSTL Class-I interfaces are compatible with the EIA/JEDEC
standard EIA/JESD8-6 [3].
HSTL Class-I inputs define their switching thresholds about a reference voltage supplied at
an input of the device. The reference voltage is applied to the HSTL_VREF input of the
VDD
1
0.003 F
TX_PLLVDD
1.0 F
GND
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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