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參數(shù)資料
| 型號： | MB86960APF-G |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 2 CHANNEL(S), 10M bps, LOCAL AREA NETWORK CONTROLLER, PQFP100 |
| 封裝： | PLASTIC, QFP-100 |
| 文件頁數(shù)： | 33/66頁 |
| 文件大?。?/td> | 376K |
| 代理商： | MB86960APF-G |
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MB86960
39
1550
W
1550
W
1550
W
1550
W
Figure 12. Transceiver Interface Termination
b. Simplified Termination for Coaxial Transceiver
COL+
COL
RXDATA+
RXDATA
TXDATA+
TXDATA
NICE
ON-BOARD
COAXIAL
TRANS–
CEIVER
240
78
270
c. Simplified Termination for on-board 10BASE-T Transceiver
COL+
COL
RXDATA+
RXDATA
TXDATA+
TXDATA
NICE
ON-BOARD
MB86961A
10BASE-T
TRANS–
CEIVER
78
270
78
0.1
mF
0.1
mF
0.1
mF
0.1
mF
0.1
mF
0.1
mF
0.1
mF
0.1
mF
0.1
mF
0.1
mF
0.1
mF
0.1
mF
Collision Signal Processing
As collisions are detected on the network media, the
external transceiver generates a 10 MHz signal on the
COL
± differential inputs to the NICE’s encoder/decoder
section. When this signal is detected by NICE, it asserts
the internal collision line, and in some modes the COL
pin, pin 92, is also asserted.
The COL
± differential driver inputs require termination
like that for the RXDATA
± inputs. See Figures 11 and 12
for suggested cable termination.
Loopback
Loopback capability is provided to allow testing of NICE
without sending signals onto the LAN media. The
loopback function is invoked by clearing the LBC bit,
DLCR4<1>. Loopback operation is illustrated in Figure
13.
Data is routed from the transmit buffer through a FIFO to
the transmit section of the data link controller, through
the internal Manchester encoder, back through the
Manchester decoder, through the receiver section of the
data link controller, and is then stored in a receive buffer.
The test software can then read and check the received
packet which has traveled through nearly all transmit and
receive sections of the chip.
When an external encoder/decoder is used, the data is
output on TXD and received at RXD. The external
Manchester encoder/decoder should respond to assertion
of its LBC input by looping its transmitter output to its
receiver input internally, and should block the transmit
data from appearing at its network output pin. Fujitsu’s
MB86961A Encoder/Decoder with 10BASE-T Trans-
ceiver, for example, responds in this way.
Figure 13. NICE in Loopback Mode
NICE Internal
Encoder/Decod
er
NO SIGNALS
APPEAR AT
OUTPUT PINS
NICE Data Link Controller Section
TXD*
RXD*
LBC*
* In “NICE” mode, these are internal signals
and no signals appear on the corresponding pins.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MB86961A | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:UNIVERSAL INTERFACE FOR 10BASET |
| MB86961APD-G | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:UNIVERSAL INTERFACE FOR 10BASET |
| MB86961APF-G | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:UNIVERSAL INTERFACE FOR 10BASET |
| MB86965 | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:EtherCoupler ETHERNET CONTROLLER WITH 10BASE?T TRANSCEIVER |
| MB86965B | 制造商:FUJITSU 制造商全稱:Fujitsu Component Limited. 功能描述:EtherCoupler ETHERNET CONTROLLER WITH 10BASE?T TRANSCEIVER |
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