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參數(shù)資料
| 型號： | MC92602ZTA |
| 廠商： | MOTOROLA INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | SPECIALTY MICROPROCESSOR CIRCUIT, PBGA196 |
| 封裝： | MAPBGA-196 |
| 文件頁數(shù)： | 43/98頁 |
| 文件大?。?/td> | 896K |
| 代理商： | MC92602ZTA |
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4-4
MC92602 SERDES Reference Manual
MOTOROLA
Error Handling
adaption is accomplished in the IPG as described above. There are two special cases that
must be considered in the data context: Jumbo frames and frame busting.
Jumbo frames are not supported in the real standard, but are rather a de facto standard.
Jumbo frames violate the untagged maximum frame size of 1518 code groups and increases
the size to 16k code groups. Given a maximum total frequency offset of 200 ppm and the
size of the MC92602’s elastic buffers, a Jumbo frame could lead to a surplus or decit of
3.3 code groups for which rate adaption must account.
The MC92602, upon detection of an imminent overow, searches for and deletes an /I2/
ordered set, removing a total of two code groups from the IPG. If a Jumbo frame is detected
by evidence of a large surplus, two /I2/ ordered sets are deleted, removing a total of four
code groups.
Similarly, upon detection of an imminent underow, the MC92602 searches for a /I2/
ordered set and inserts an /I2/ adjacent to it into the IPG, adding a total of two code groups.
If a Jumbo frame is detected by evidence of a large decit, two /I2/ ordered sets are inserted,
adding a total of four code groups.
The size of the elastic buffers are increased by 8 to accommodate accumulation of four code
groups to guard against later decit, and to allow for the accumulation of an additional four
surplus code groups.
In half-duplex mode of operation as dened by the standard, frame bursting is allowed.
Frame bursting is an artifact of the CSMA/CD media access mechanism where idle ordered
sets in the IPG are used to signal availability of the medium. Frame bursting allows the
transmitter to retain ownership of the medium by inserting carrier extend, /R/, ordered sets
in the IPG in place of idle ordered sets. A frame burst can be as long as 65k bits (8k code
groups). An idle-based IPG must exist between frame bursts. Frame bursts are shorter than
Jumbo frames, therefore, frame bursting is supported using the same mechanism as Jumbo
frames just described.
4.2
Error Handling
The receiver interface error reporting mechanisms as described in Section 3.3.6.3 are used
in compatibility mode with one exception; overrun/underrun errors are processed
differently.
Overrun may occur when an appropriate code group to remove can not be identied. In this
situation, one data code group is removed from the packet stream. The received packet
stream continues normally thereafter. The code group immediately following the removed
code group is reported as an overrun error as described in Section 3.3.6.3. The MAC
sublayer should detect the missing code group as a CRC error.
Underrun may occur when an appropriate code group to insert can not be identied. In this
situation, one data code group is repeated in the packet stream. The received packet stream
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| MC92603VF | 功能描述:IC TXRX ETH QUAD GIG 256-MAPBGA RoHS:否 類別:集成電路 (IC) >> 接口 - 驅(qū)動器，接收器，收發(fā)器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:25 系列:- 類型:收發(fā)器 驅(qū)動器/接收器數(shù):2/2 規(guī)程:RS232 電源電壓:4.5 V ~ 5.5 V 安裝類型:通孔 封裝/外殼:16-DIP（0.300"，7.62mm） 供應(yīng)商設(shè)備封裝:16-PDIP 包裝:管件 |
| MC92603VM | 功能描述:IC ETH TXRX QUAD GIG 256-MAPBGA RoHS:是 類別:集成電路 (IC) >> 接口 - 驅(qū)動器，接收器，收發(fā)器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 類型:收發(fā)器 驅(qū)動器/接收器數(shù):2/2 規(guī)程:RS232 電源電壓:3 V ~ 5.5 V 安裝類型:表面貼裝 封裝/外殼:16-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:16-SOIC 包裝:帶卷 (TR) |
| MC92604VM | 功能描述:IC ETH TXRX DUAL GIG 196-MAPBGA RoHS:是 類別:集成電路 (IC) >> 接口 - 驅(qū)動器，接收器，收發(fā)器 系列:- 標(biāo)準(zhǔn)包裝:1,000 系列:- 類型:收發(fā)器 驅(qū)動器/接收器數(shù):2/2 規(guī)程:RS232 電源電壓:3 V ~ 5.5 V 安裝類型:表面貼裝 封裝/外殼:16-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:16-SOIC 包裝:帶卷 (TR) |
| MC92604ZT | 功能描述:IC TXRX ETH DUAL GIG 196-MAPBGA RoHS:否 類別:集成電路 (IC) >> 接口 - 驅(qū)動器，接收器，收發(fā)器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:25 系列:- 類型:收發(fā)器 驅(qū)動器/接收器數(shù):2/2 規(guī)程:RS232 電源電壓:4.5 V ~ 5.5 V 安裝類型:通孔 封裝/外殼:16-DIP（0.300"，7.62mm） 供應(yīng)商設(shè)備封裝:16-PDIP 包裝:管件 |
| MC92610 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:Quad 3.125 Gbaud SERDES |
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