參數(shù)資料
型號(hào)： QR0001
文件頁(yè)數(shù)： 19/40頁(yè)
文件大?。?/td> 440K
代理商： QR0001
4.0 Ring Interface
(Continued)
An abort symbol identifies the occurrence of a failure such
as (1) an illegal symbol sequence, (2) a corrupted symbol or
(3) a node ID for which no node is present. The node that
creates the abort symbol deletes it once the abort symbol
has circulated the ring.
For every tick of the ring clock, every node in the ring re-
ceives one symbol at its upstream port and transmits one
symbol at its downstream port. In the absence of any other
symbol, a null symbol is transmitted.
4.6 Mapping of Type, Frame, Data and EDC
Code on the Ring
On the ring path, a 42-bit symbol is transferred on every tick
of the 50 MHz clock. The 42-bit symbol is divided into 7 sub-
symbols, 6 bits wide. Each sub-symbol is transferred se-
quentially at a rate of 1 sub-symbol every 2.9 ns. In all, 42
bits are transferred every 20 ns. Refer to Figure 4.2.
The type field, frame bit and the 3 MSB of the data are
mapped to sub-symbol t. Data
[
28 to 0
]
are mapped onto
sub-symbols u to y. The EDC field, CB
[
6:0
]
, is mapped onto
the last two sub-symbols of y and z. See Figure 4.4.
Later in this data sheet reference is made only to the fields
that are muItiplexed onto the SS
[
5:0
]
field as they appear
on UpSS and DnSS.Figure 4.2 and4.3 show when each bit
of any symbol is transmitted or received, and in what posi-
tion of the sub-symbol it appears. For example, F (Frame)
appears on SS
[
3
]
during ‘‘sub-symbol t’’. Data 0 (D0) ap-
pears on SS
[
1
]
during ‘‘y’’, the sixth sub-symbol.
Note:
Figure 4.3 shows that the rising edge of DnCLK is aligned with the
beginning of the next to last sub-symbol of the previous symbol that
gets sent out on DnSS
[
5:0
]
.
TL/F/11928–25
FIGURE 4.2. Seven Sub-Symbols in one Clock Cycle
TL/F/11928–12
FIGURE 4.3. Seven Sub-Symbols are Serially Transmitted Every 2.9 ns
TL/F/11928–13
FIGURE 4.4. Sub-Symbols are Serially Transmitted onto 6 Differential Pairs
19
相關(guān)PDF資料
PDF描述
QR0610T30 128 x 128 pixel format, LED Backlight available
QRD0610T30 128 x 128 pixel format, LED or EL Backlight available
QRC0610T30 128 x 128 pixel format, LED or EL Backlight available
QRF0610T30 128 x 128 pixel format, LED or EL Backlight available
QR0620T30 128 x 128 pixel format, LED or EL Backlight available
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
QR0610T30 制造商:POWEREX 制造商全稱:Powerex Power Semiconductors 功能描述:Fast Recovery Diode Module (100 Amp/600 Volts)
QR0620T30 制造商:POWEREX 制造商全稱:Powerex Power Semiconductors 功能描述:Fast Recovery Diode Module (200 Amp/600 Volts)
QR0630T30 制造商:POWEREX 制造商全稱:Powerex Power Semiconductors 功能描述:Fast Recovery Diode Module (300 Amp/600 Volts)
QR0640T30 制造商:POWEREX 制造商全稱:Powerex Power Semiconductors 功能描述:Fast Recovery Diode Module (400 Amp/600 Volts)
QR06A-2/106349 功能描述:BLWR CROSS FLOW 460X158MM 115VAC RoHS:是 類別:風(fēng)扇，熱管理 >> 風(fēng)扇 - AC 系列:QR06 其它有關(guān)文件:Declaration of Conformity 標(biāo)準(zhǔn)包裝:1 系列:- 氣流:- 軸承類型:- 風(fēng)扇類型:- 特點(diǎn):- 雜訊:- 功率（瓦特）:- RPM:- 尺寸/尺寸:- 靜態(tài)壓力:- 端子:- 電壓 - 額定:- 重量:- 額定電流:- 預(yù)期壽命:- 工作溫度:- 電壓范圍:- 其它名稱:Q5464961
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