MSC8157ESVT1000A Freescale Semiconductor, MSC8157ESVT1000A Datasheet - Page 60
MSC8157ESVT1000A
Manufacturer Part Number
MSC8157ESVT1000A
Description
Digital Signal Processors & Controllers - DSP, DSC QUAL 8157 EN FG 1 GHZ 0 - 105c
Manufacturer
Freescale Semiconductor
Datasheet
1.MSC8157TVT1000A.pdf
(95 pages)
Specifications of MSC8157ESVT1000A
Rohs
yes
Core
SC3850
Data Bus Width
32 bit
Program Memory Size
32 KB
Data Ram Size
512 KB
Number Of Programmable I/os
32
Number Of Timers
2
Operating Supply Voltage
0.97 V to 1.05 V
Maximum Operating Temperature
+ 105 C
Package / Case
FCPBGA-783
Mounting Style
SMD/SMT
Available stocks
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Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MSC8157ESVT1000A
Manufacturer:
Freescale
Quantity:
1 400
Company:
Part Number:
MSC8157ESVT1000A
Manufacturer:
Freescale Semiconductor
Quantity:
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Electrical Characteristics
3.5.3.2
The DC-level requirements for PCI Express implementations have separate requirements for the Tx and Rx lines. The MSC8157
supports a 2.5 Gbps and a 5 Gbps PCI Express interface defined by the PCI Express Base Specification, Revision 2.0. The
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SD_REF_CLK[1–2]
SD_REF_CLK[1–2]
Single-Ended Mode
— The reference clock can also be single-ended. The SD_REF_CLK[1–2] input amplitude (single-ended swing)
— The SD_REF_CLK[1–2] input average voltage must be between 200 and 400 mV.
— To meet the input amplitude requirement, the reference clock inputs may need to be DC- or AC-coupled externally.
Figure 6. Differential Reference Clock Input DC Requirements (External AC-Coupled)
SD_REF_CLK[1–2]
must be between 400 mV and 800 mV peak-peak (from V
unconnected or tied to ground.
reference clock input requirement for single-ended signaling mode.
For the best noise performance, the reference of the clock could be DC- or AC-coupled into the unused phase
(SD_REF_CLK[1–2]) through the same source impedance as the clock input (SD_REF_CLK[1–2]) in use.
SD_REF_CLK[1–2]
DC-Level Requirements for PCI Express Configurations
Figure 7. Single-Ended Reference Clock Input DC Requirements
200 mV < Input Amplitude or Differential Peak < 800 mV
400 mV < SD_REF_CLK[1–2] Input Amplitude < 800 mV
MSC8157 Six-Core Digital Signal Processor Data Sheet, Rev. 1
MIN
to V
MAX
) with SD_REF_CLK[1–2] either left
0 V
Vmin > Vcm – 400 mV
Vmax < Vcm + 400 mV
Figure 7
Freescale Semiconductor
shows the SerDes
Vcm