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| 型號： | TLK2201AI |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | ETHERNET TRANSCEIVERS |
| 中文描述： | 以太網(wǎng)收發(fā)器 |
| 文件頁數(shù)： | 7/21頁 |
| 文件大小： | 343K |
| 代理商： | TLK2201AI |
TLK2201A, TLK2201AI
ETHERNET TRANSCEIVERS
SLLS572
–
JUNE 2003
7
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
data reception latency
The serial to parallel data latency is the time from when the first bit arrives at the receiver until it is output in the
aligned parallel word with RD0 received as first bit. The minimum latency in TBI mode is 21 bit times and the
maximum latency is 31 bit times. The minimum latency in DDR mode is 27 bit times and maximum latency is
34 bit times.
data reception latency (continued)
10 Bit Code
RXP, RXN
RD(0
–
9)
RBC0
10 Bit Code
td(Rx latency)
Figure 6. Receiver Latency
–
TBI Normal Mode Shown
loss of signal detection
These devices have a loss of signal (LOS) detection circuit for conditions where the incoming signal no longer
has sufficient voltage level to keep the clock recovery circuit in lock. The LOS is intended to be an indication
of gross signal error conditions, such as a detached cable or no signal being transmitted, and not an indication
of signal coding health. Under a PRBS serial input pattern, LOS is high for signal amplitudes greater than
150 mV. The LOS is low for all amplitudes below 50 mV. Between 50 mV and 150 mV, LOS is undetermined.
testability
The loopback function provides for at-speed testing of the transmit/receive portions of the circuitry. The enable
function allows for all circuitry to be disabled so that an Iddq test can be performed. The PRBS function also
allows for a BIST( built-in self test). The terminal setting, TESTEN high, enables the test mode. The terminal
TESTEN has an internal pulldown resistor, so it defaults to normal operation. The TESTEN is only used for
factory testing, and is not intended for the end-user.
loopback testing
The transceiver can provide a self-test function by enabling (LOOPEN to high level) the internal loopback path.
Enabling this function causes serial transmitted data to be routed internally to the receiver. The parallel data
output can be compared to the parallel input data for functional verification. (The external differential output is
held in a high-impedance state during the loopback testing.)
enable function
When held low, ENABLE disables all quiescent power in both the analog and digital circuitry. This allows an
ultralow-power idle state when the link is not active.
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參數(shù)描述 |
|---|---|
| TLK2201AIRCP | 功能描述:以太網(wǎng) IC 1.0 to 1.6 Gbps Gb Ethernet Transceiver RoHS:否 制造商:Micrel 產(chǎn)品:Ethernet Switches 收發(fā)器數(shù)量:2 數(shù)據(jù)速率:10 Mb/s, 100 Mb/s 電源電壓-最大:1.25 V, 3.45 V 電源電壓-最小:1.15 V, 3.15 V 最大工作溫度:+ 85 C 封裝 / 箱體:QFN-64 封裝:Tray |
| TLK2201AIRCPG4 | 功能描述:以太網(wǎng) IC 1.0 to 1.6 Gbps Gb Ethernet Transceiver RoHS:否 制造商:Micrel 產(chǎn)品:Ethernet Switches 收發(fā)器數(shù)量:2 數(shù)據(jù)速率:10 Mb/s, 100 Mb/s 電源電壓-最大:1.25 V, 3.45 V 電源電壓-最小:1.15 V, 3.15 V 最大工作溫度:+ 85 C 封裝 / 箱體:QFN-64 封裝:Tray |
| TLK2201AIRCPR | 功能描述:以太網(wǎng) IC 1.0 to 1.6 Gbps Gb Ethernet Transceiver RoHS:否 制造商:Micrel 產(chǎn)品:Ethernet Switches 收發(fā)器數(shù)量:2 數(shù)據(jù)速率:10 Mb/s, 100 Mb/s 電源電壓-最大:1.25 V, 3.45 V 電源電壓-最小:1.15 V, 3.15 V 最大工作溫度:+ 85 C 封裝 / 箱體:QFN-64 封裝:Tray |
| TLK2201AIRCPRG4 | 功能描述:以太網(wǎng) IC 1.0 to 1.6 Gbps Gb Ethernet Transceiver RoHS:否 制造商:Micrel 產(chǎn)品:Ethernet Switches 收發(fā)器數(shù)量:2 數(shù)據(jù)速率:10 Mb/s, 100 Mb/s 電源電壓-最大:1.25 V, 3.45 V 電源電壓-最小:1.15 V, 3.15 V 最大工作溫度:+ 85 C 封裝 / 箱體:QFN-64 封裝:Tray |
| TLK2201AJR | 制造商:TI 制造商全稱:Texas Instruments 功能描述:1.0Gb to 1.6Gb SMALL FORM-FACTOR ETHERNET TRANSCEIVER |
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