- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄370260 > FW801A Low-Power PHY IEEE 1394A-2000 One-Cable Transceiver/Arbiter Device PDF資料下載
參數(shù)資料
| 型號： | FW801A |
| 英文描述： | Low-Power PHY IEEE 1394A-2000 One-Cable Transceiver/Arbiter Device |
| 中文描述： | 低功耗PHY的IEEE 1394A端口，2000年一電纜收發(fā)器/仲裁器裝置 |
| 文件頁數(shù)： | 7/24頁 |
| 文件大小： | 378K |
| 代理商： | FW801A |
Data Sheet, Rev. 1
June 2001
FW801A Low-Power PHY
IEEE
1394A-2000
One-Cable Transceiver/Arbiter Device
Agere Systems Inc.
7
Signal Information
(continued)
Table 1. Signal Descriptions
* Active-low signals are indicated by “/” at the beginning of signal names, within this document.
Pin
Signal
*
Type
Name/Description
17
C/LKON
I/O
Bus Manager Capable Input and Link-On Output.
On hardware reset,
this pin is used to set the default value of the contender status indicated
during self-ID. The bit value programming is done by tying the signal
through a 10 k
resistor to V
DD
(high, bus manager capable) or to GND
(low, not bus manager capable). Using either the pull-up or pull-down
resistor allows the link-on output to override the input value when neces-
sary.
After hardware reset, this pin is set as an output.
If the LPS is inactive,
C/LKON indicates one of the following events by asserting a 6.114 MHz
signal.
1. FW801A receives a link-on packet addressed to this node.
2. Port_event register bit is 1.
3. Any of the Timeout, Pwr_Fail, or Loop register bits are 1 and the
Resume_int register bit is also 1. Once activated, the C/LKON output will
continue active until the LPS becomes active. The PHY also deasserts
the C/LKON output when a bus reset occurs, if the C/LKON is active due
solely to the reception of a link-on packet.
Note:
If an interrupt condition exists which would otherwise cause the C/
LKON output to be activated if the LPS were inactive, the C/LKON
output will be activated when the LPS subsequently becomes inac-
tive.
Cable-Not-Active Output.
CNA is asserted high when none of the PHY
ports are receiving an incoming bias voltage. This circuit remains active
during the powerdown mode.
Cable Power Status.
CPS is normally connected to the cable power
through a 400 k
resistor. This circuit drives an internal comparator that
detects the presence of cable power. This information is maintained in
one internal register and is available to the LLC by way of a register read
(see Table 8
,
Register 0).
Control I/O.
The CTLn signals are bidirectional communications control
signals between the PHY and the LLC. These signals control the passage
of information between the two devices. Bus-keeper circuitry is built into
these terminals.
Data I/O.
The Dn signals are bidirectional and pass data between the
PHY and the LLC. Bus-keeper circuitry is built into these terminals.
13
CNA
O
20
CPS
I
1
CTL0
I/O
2
CTL1
3, 4, 6, 7,
8, 9, 10,
11
19
D[0:7]
I/O
/ISO
I
Link Interface Isolation Disable Input (Active-Low).
/ISO controls the
operation of an internal pulse differentiating function used on the PHY-
LLC interface signals, CTLn and Dn, when they operate as outputs. When
/ISO is asserted low, the isolation barrier is implemented between PHY
and its LLC (as described in Annex J of
IEEE
1394-1995). /ISO is nor-
mally tied high to disable isolation differentiation. Bus-keepers are
enabled when /ISO is high (inactive) on CTL, D, and LREQ. When /
ISO is low (active), the bus-keepers are disabled. Please refer to Agere’s
application note AP98-074CMPR for more information on isolation.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| FW801A-DB | Low-Power PHY IEEE 1394A-2000 One-Cable Transceiver/Arbiter Device |
| FW801 | One-Cable Transceiver/Arbiter Device |
| FW80200M400 | Microprocessor |
| FW80200M600 | Microprocessor |
| FW80200M733 | Microprocessor |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| FW801A-DB | 制造商:AGERE 制造商全稱:AGERE 功能描述:Low-Power PHY IEEE 1394A-2000 One-Cable Transceiver/Arbiter Device |
| FW801BF | 制造商:AGERE 制造商全稱:AGERE 功能描述:Low-Power PHY 1394a-2000 One-Cable Transceiver/Arbiter Device |
| FW801BF-09-DB | 制造商:AGERE 制造商全稱:AGERE 功能描述:Low-Power PHY 1394a-2000 One-Cable Transceiver/Arbiter Device |
| FW802 | 制造商:AGERE 制造商全稱:AGERE 功能描述:Low-Power PHY IEEE 1394A-2000 Two-Cable Transceiver/Arbiter Device |
| FW80200M400 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Microprocessor |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。