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參數(shù)資料
| 型號： | KS8993F |
| 廠商： | Micrel Inc |
| 文件頁數(shù)： | 19/99頁 |
| 文件大小： | 0K |
| 描述： | IC CONV MED 10/100 3PORT 128PQFP |
| 標(biāo)準(zhǔn)包裝： | 66 |
| 系列： | * |
| 類型： | * |
| 應(yīng)用： | * |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 128-BFQFP |
| 供應(yīng)商設(shè)備封裝： | 128-PQFP（14x20） |
| 配用： | KS8993F-EVAL-ND - EVAL KIT EXPERIMENTAL KS8993F |
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KS8993F
Micrel
August 26, 2004
Revision 1.0
- 26 -
Table 1: FX and TX Mode Selection
FXSD1 (pin 44)
Condition
Less than 0.2V
TX mode
Greater than 1V, but less than 1.8V
FX mode
No signal detected;
Far-End Fault generated (if enabled)
Greater than 2.2V
FX mode
Signal detected
To ensure proper operation, a resistive voltage divider is recommended to adjust the fiber transceiver SD output
voltage swing to match the KS8993F FXSD1 input voltage threshold. Refer to KS8993F schematic for recommended
fiber transceiver connections.
2.3.6
100BASE-FX Far-End Fault (FEF)
Far-End Fault (FEF) occurs when the signal detection is logically false on the receive side of the fiber transceiver. The
KS8993F detects a FEF when its FXSD1 input is between 1.0V and 1.8V. When a FEF occurs, the transmission side
signals the link partner by sending 84 ones followed by 1 zero in the idle period between frames.
Upon receiving a FEF, the link will go down (even when the fiber signal is detected) to indicate a fault condition. The
transmitting side is not affected when a FEF is received, and will continue to send out its normal transmit pattern from
the MAC.
By default, FEF is enabled. FEF can be disabled through register setting.
2.3.7
10BASE-T Transmit and Receive
The output 10BASE-T driver is incorporated into the 100BASE-TX driver to allow transmission with the same
magnetic. They are internally wave-shaped and pre-emphasized into outputs with a typical 2.3 V amplitude. The
harmonic contents are at least 27 dB below the fundamental when driven by an all-ones Manchester-encoded signal.
On the receive side, input buffer and level detecting squelch circuits are employed. A differential input receiver circuit
and a PLL perform the decoding function. The Manchester-encoded data stream is separated into clock signal and
NRZ data. A squelch circuit rejects signals with levels less than 400 mV or with short pulse widths in order to prevent
noises at the RXP or RXM input from falsely triggering the decoder. When the input exceeds the squelch limit, the
PLL locks onto the incoming signal and the KS8993F decodes a data frame. The receiver clock is maintained active
during idle periods in between data reception.
2.3.8
Power Management
The KS8993F features a per-port power down mode. To save power, a port that is not being used can be powered
down through the port control registers, or MIIM control registers. In addition, there is a full chip power down mode.
When activated, the entire chip will be shut down.
2.3.9
Auto MDI/MDI-X Crossover
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| KS8993F-A1 | 功能描述:IC CONV MED 10/100 3PORT 128PQFP RoHS:否 類別:集成電路 (IC) >> 專用 IC 系列:* 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:- 類型:調(diào)幀器 應(yīng)用:數(shù)據(jù)傳輸 安裝類型:表面貼裝 封裝/外殼:400-BBGA 供應(yīng)商設(shè)備封裝:400-PBGA（27x27） 包裝:散裝 |
| KS8993FA5 | 功能描述:IC SWITCH 3-PORT 10/100 128-PQFP RoHS:否 類別:集成電路 (IC) >> 專用 IC 系列:* 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:- 類型:調(diào)幀器 應(yīng)用:數(shù)據(jù)傳輸 安裝類型:表面貼裝 封裝/外殼:400-BBGA 供應(yīng)商設(shè)備封裝:400-PBGA（27x27） 包裝:散裝 |
| KS8993F-EVAL | 功能描述:EVAL KIT EXPERIMENTAL KS8993F RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 評估演示板和套件 系列:- 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:- 主要目的:電源管理，電池充電器 嵌入式:否 已用 IC / 零件:MAX8903A 主要屬性:1 芯鋰離子電池 次要屬性:狀態(tài) LED 已供物品:板 |
| KS8993FL | 功能描述:IC CONV MED 10/100 SGL 128PQFP RoHS:否 類別:集成電路 (IC) >> 專用 IC 系列:* 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:- 類型:調(diào)幀器 應(yīng)用:數(shù)據(jù)傳輸 安裝類型:表面貼裝 封裝/外殼:400-BBGA 供應(yīng)商設(shè)備封裝:400-PBGA（27x27） 包裝:散裝 |
| KS8993FL-EVAL | 功能描述:BOARD EVAL EXPERIMENT KS8993F RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 評估演示板和套件 系列:- 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:- 主要目的:電源管理，電池充電器 嵌入式:否 已用 IC / 零件:MAX8903A 主要屬性:1 芯鋰離子電池 次要屬性:狀態(tài) LED 已供物品:板 |
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