- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄360744 > ICS1886M FDDI / Fast Ethernet PHYceiverTM PDF資料下載
參數(shù)資料
| 型號： | ICS1886M |
| 英文描述： | FDDI / Fast Ethernet PHYceiverTM |
| 中文描述： | FDDI的/快速以太網(wǎng)PHYceiverTM |
| 文件頁數(shù)： | 8/10頁 |
| 文件大小： | 726K |
| 代理商： | ICS1886M |
8
ICS1886
The current
ICS1886
device provides a single
TTL-compatible input, carrier detect (CD~).
When carrier detect is asserted, the ICS1886
locks to the incoming receive data. When
carrier detect is deasserted, or if carrier detect
is asserted and no data is present on the receive
inputs, the PLL will free run and continue to
provide RXCLK at the nominal 25 MHz
frequency. This provides a continuous Receive
clock source, even if CD~ is always tied to
ground.
If a true signal detect is required by a chip that
connects to the
ICS1886
, a simple, low cost
PECL to CMOS converter can be used. The
following circuits implement this function:
These circuits provide PECL to CMOS
conversion for less than $0.80 in single unit
quantities. Note that the LM393 has two
amplifiers, so the unused one is tied inactive.
A running production change will be made to
the
ICS1886
to change the CD~ input to PECL.
Therefore, boards should be layed out with a
direct normal PECL termination connection
stuffing option. This allows either version of
the part to be used by stuffing one of two sets
of external components. A version of this
circuit is shown in the diagram above.
Option 2
Single-Ended PECL to CMOS Conversion Circuit
Option 1
Differential PECL to CMOS Conversion Circuit
CD PECL Input: Board Layout Options
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ICS1887 | FDDI / Fast Ethernet PHYceiverTM |
| ICS1887M | FDDI / Fast Ethernet PHYceiverTM |
| ICS1889 | 100Base-FX Integrated PHYceiverTM |
| ICS1892 | 10Base-T/100Base-TX Integrated PHYceiver |
| ICS1892Y | 10Base-T/100Base-TX Integrated PHYceiver |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ICS1887 | 制造商:ICS 制造商全稱:ICS 功能描述:FDDI / Fast Ethernet PHYceiverTM |
| ICS1887M | 制造商:ICS 制造商全稱:ICS 功能描述:FDDI / Fast Ethernet PHYceiverTM |
| ICS1888 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:ATM/SONET Transceiver |
| ICS1889 | 制造商:ICS 制造商全稱:ICS 功能描述:100Base-FX Integrated PHYceiverTM |
| ICS1890 | 制造商:ICS 制造商全稱:ICS 功能描述:Auto-Negotiation Advertisement Register (register 4 [0x04]) |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。