參數(shù)資料
型號(hào)： S2065
廠商： Applied Micro Circuits Corp.
英文描述： Quad Serial Backplane Device with Dual I/O(帶雙傳送接收串行I/O的四收發(fā)器)
中文描述： 四串行設(shè)備，配有雙背板的I / O（帶雙傳送接收串行的I / O的四收發(fā)器）
文件頁(yè)數(shù)： 7/37頁(yè)
文件大?。?/td> 381K
代理商： S2065
7
S2065
QUAD SERIAL BACKPLANE DEVICE WITH DUAL I/O
October 13, 2000 / Revision G
Figure 6. DIN Data Clocking with TCLK
Figure 7. FC/GE REFCLK DIN Clocking
REFCLK
S2065
VCO/10 or VCO/20
TCLKx
DINx[0:7]
REF
OSCILLATOR
MAC
ASIC
TCLKO
PLL
REFCLK
S2065
TCLKx
DINx[0:7]
REF
OSCILLATOR
MAC
ASIC
TCLKO
PLL
VCO/10
The following figures illustrate the broad range of
transmit data clocking options supported by the
S2065.
Figure 6 demonstrates the flexibility afforded by the
S2065. A low jitter reference is provided directly to
the S2065 at either 1/10 or 1/20 the serial data rate.
This ensures minimum jitter in the synthesized clock
used for serial data transmission. A system clock
output at the parallel word rate, TCLKO, is derived
from the PLL and provided to the upstream circuit as
a system clock. This clock can be buffered as re-
quired without concern about added delay. There is
no phase requirement placed upon TCLKO and the
TCLKx clock, which is provided back to the S2065,
other than that they remain within
±
3ns of the phase
relationship established at reset.
The S2065 also supports the traditional REFCLK
(TBC) clocking found in Fibre Channel and Gigabit
Ethernet applications and is illustrated in Figure 7.
This approach imposes significant challenges in
maintaining timing margins on the designer.
Half Rate Operation
The S2065 supports full and 1/2 rate operation for all
modes of operation. When RATE is LOW, the S2065
serial data rate equals the VCO frequency. When
RATE is HIGH, the VCO is divided by 2 before being
provided to the chip. Thus, the S2065 can support
Fibre Channel and serial backplane functions at both
full and 1/2 the VCO rate.
8B/10B Coding
The S2065 provides 8B/10B line coding for each chan-
nel. The 8B/10B transmission code includes serial en-
coding and decoding rules, special characters, and
error control. Information is encoded, 8 bits at a time,
into a 10-bit transmission character. The characters
defined by this code ensure that short run lengths and
enough transitions are present in the serial bit stream
to make clock recovery possible at the receiver. The
encoding also greatly increases the likelihood of de-
tecting any single or multiple errors that might occur
during the transmission and reception of data
1
.
The 8B/10B transmission code includes D-characters,
used for data transmission, and K-characters, used for
control or protocol functions. Each D-character and K-
character has a positive and a negative parity version.
The parity of each codeword is selected by the en-
coder to control the running disparity of the data
stream. K-character generation is controlled individu-
ally for each channel using the KGENx input. When
KGEN is asserted, the data on the parallel input is
mapped into the corresponding control character. The
parity of the K-character is selected to minimize run-
ning disparity in the serial data stream. Table 2 lists
the K characters supported by the S2065 and identi-
fies the mapping of the DIN[7:0] bits to each character.
1
A.X. Widner and P.A. Franaszek, "A Byte-Oriented DC Bal-
anced (0,4) 8B/10B Transmission Code," IBM Research Report
RC9391, May 1982.
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參數(shù)描述
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S2065J 制造商:Littelfuse 功能描述:Thyristor Thyristor/Triac Type:SCR
S2065J_ 功能描述:SCR - Use 576-S2065J RoHS:否 制造商:STMicroelectronics 最大轉(zhuǎn)折電流 IBO:480 A 額定重復(fù)關(guān)閉狀態(tài)電壓 VDRM:600 V 關(guān)閉狀態(tài)漏泄電流（在 VDRM IDRM 下）:5 uA 開(kāi)啟狀態(tài) RMS 電流 (It RMS): 正向電壓下降:1.6 V 柵觸發(fā)電壓 (Vgt):1.3 V 最大柵極峰值反向電壓:5 V 柵觸發(fā)電流 (Igt):35 mA 保持電流（Ih 最大值）:75 mA 安裝風(fēng)格:Through Hole 封裝 / 箱體:TO-220 封裝:Tube
S2065JTP 功能描述:SCR SCR 200V 65A Iso RoHS:否 制造商:STMicroelectronics 最大轉(zhuǎn)折電流 IBO:480 A 額定重復(fù)關(guān)閉狀態(tài)電壓 VDRM:600 V 關(guān)閉狀態(tài)漏泄電流（在 VDRM IDRM 下）:5 uA 開(kāi)啟狀態(tài) RMS 電流 (It RMS): 正向電壓下降:1.6 V 柵觸發(fā)電壓 (Vgt):1.3 V 最大柵極峰值反向電壓:5 V 柵觸發(fā)電流 (Igt):35 mA 保持電流（Ih 最大值）:75 mA 安裝風(fēng)格:Through Hole 封裝 / 箱體:TO-220 封裝:Tube
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