參數(shù)資料
型號(hào): MSC8256TVT1000B
廠(chǎng)商: Freescale Semiconductor
文件頁(yè)數(shù): 36/70頁(yè)
文件大?。?/td> 0K
描述: IC DSP 6 CORE 1GHZ 783FCPBGA
標(biāo)準(zhǔn)包裝: 1
系列: StarCore
類(lèi)型: SC3850 內(nèi)核
接口: 以太網(wǎng),I²C,PCI,RGMII,串行 RapidIO,SGMII,SPI,UART/USART
時(shí)鐘速率: 1.0GHz
非易失內(nèi)存: ROM(96 kB)
芯片上RAM: 576kB
電壓 - 輸入/輸出: 2.50V
電壓 - 核心: 1.00V
工作溫度: -40°C ~ 105°C
安裝類(lèi)型: 表面貼裝
封裝/外殼: 783-BBGA,F(xiàn)CBGA
供應(yīng)商設(shè)備封裝: 783-FCPBGA(29x29)
包裝: 托盤(pán)
Electrical Characteristics
MSC8256 Six-Core Digital Signal Processor Data Sheet, Rev. 6
Freescale Semiconductor
41
Table 22 provides the DDR2 differential specifications for the differential signals MDQS/MDQS and MCK/MCK.
Table 23 provides the DDR3 differential specifications for the differential signals MDQS/MDQS and MCK/MCK.
2.6.2
HSSI AC Timing Specifications
The following subsections define the AC timing requirements for the SerDes reference clocks, the PCI Express data lines, the
Serial RapidIO data lines, and the SGMII data lines.
2.6.2.1
AC Requirements for SerDes Reference Clock
Table 24 lists AC requirements for the SerDes reference clocks.
Note:
Specifications are valid at the recommended operating conditions listed in Table 3.
Table 22. DDR2 SDRAM Differential Electrical Characteristics
Parameter
Symbol
Min
Max
Unit
Input AC differential cross-point voltage
VIXAC
0.5
× GVDD – 0.175
0.5
× GVDD + 0.175
V
Output AC differential cross-point voltage
VOXAC
0.5
× GVDD – 0.125
0.5
× GVDD + 0.125
V
Table 23. DDR3 SDRAM Differential Electrical Characteristics
Parameter
Symbol
Min
Max
Unit
Input AC differential cross-point voltage
VIXAC
0.5
× GVDD – 0.150
0.5
× GVDD + 0.150
V
Output AC differential cross-point voltage
VOXAC
0.5
× GVDD – 0.115
0.5
× GVDD + 0.115
V
Table 24. SR[1–2]_REF_CLK and SR[1–2]_REF_CLK Input Clock Requirements
Parameter
Symbol
Min
Typical
Max
Units
Notes
SR[1–2]_REF_CLK/SR[1–2]_REF_CLK
frequency range
tCLK_REF
100/125
MHz
1
SR[1–2]_REF_CLK/SR[1–2]_REF_CLK clock
frequency tolerance
tCLK_TOL
–350
350
ppm
SR[1–2]_REF_CLK/SR[1–2]_REF_CLK
reference clock duty cycle (measured at 1.6 V)
tCLK_DUTY
40
50
60
%
SR[1–2]_REF_CLK/SR[1–2]_REF_CLK max
deterministic peak-peak jitter at 10-6 BER
tCLK_DJ
42
ps
SR[1–2]_REF_CLK/SR[1–2]_REF_CLK total
reference clock jitter at 10-6 BER (peak-to-peak
jitter at ref_clk input)
tCLK_TJ
86
ps
2
SR[1–2]_REF_CLK/SR[1–2]_REF_CLK
rising/falling edge rate
tCLKRR/tCLKFR
1—
4
V/ns
3
Differential input high voltage
VIH
200
mV
4
Differential input low voltage
VIL
–200
mV
4
Rising edge rate (SR[1–2]_REF_CLK) to falling
edge rate (SR[1–2]_REF_CLK) matching
Rise-Fall
Matching
——
20
%
5, 6
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