參數(shù)資料
型號(hào): DS21Q44T
元件分類: 通信及網(wǎng)絡(luò)
英文描述: Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
中文描述: Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
文件頁數(shù): 14/105頁
文件大?。?/td> 620K
代理商: DS21Q44T
DS21Q44
14 of 105
Signal Name:
Signal Description:
Signal Type:
1.544 MHz or 2.048 MHz clock. Only used when the transmit side elastic store function is enabled.
Should be tied low in applications that do not use the transmit side elastic store. Can be burst at rates up
to 8.192 MHz.
TSYSCLK
Transmit System Clock
Input
Signal Name:
Signal Description:
Signal Type:
4 KHz to 20 KHz demand clock for the TLINK input. See Section 14 for details.
TLCLK
Transmit Link Clock
Output
Signal Name:
Signal Description:
Signal Type:
If enabled, this pin will be sampled on the falling edge of TCLK for data insertion into any combination
of the Sa bit positions (Sa4 to Sa8). See Section 14 for details.
TLINK
Transmit Link Data
Input
Signal Name:
Signal Description:
Signal Type:
A pulse at this pin will establish either frame or multiframe boundaries for the transmit side. This pin can
also be programmed to output either a frame or multiframe pulse. Always synchronous with TCLK.
TSYNC
Transmit Sync
Input /Output
Signal Name:
Signal Description:
Signal Type:
Only used when the transmit side elastic store is enabled. A pulse at this pin will establish either frame or
multiframe boundaries for the transmit side. Should be tied low in applications that do not use the
transmit side elastic store. Always synchronous with TSYSCLK.
TSSYNC
Transmit System Sync
Input
Signal Name:
Signal Description:
Signal Type:
When enabled, this input will sample signaling bits for insertion into outgoing PCM E1 data stream.
Sampled on the falling edge of TCLK when the transmit side elastic store is disabled. Sampled on the
falling edge of TSYSCLK when the transmit side elastic store is enabled. This function is available when
FMS = 0.
TSIG
Transmit Signaling Input
Input
Signal Name:
Signal Description:
Signal Type:
Updated on the rising edge of TCLK with the bipolar data out of the transmit side formatter. Can be
programmed to source NRZ data via the Output Data Format (TCR1.7) control bit.
TPOS
Transmit Positive Data Output
Output
Signal Name:
Signal Description:
Signal Type:
Updated on the rising edge of TCLK with the bipolar data out of the transmit side formatter.
TNEG
Transmit Negative Data Output
Output
相關(guān)PDF資料
PDF描述
DS21Q44TN MICROSWITCH, SPDT, SIM ROLLER LEVER; Current, contact AC:5A; Force, operating:91.75gf; Travel, pre:16.0mm; Centres, fixing LxW:22.2mm; Temp, op. max:120(degree C); Temp, op. min:-40(degree C); Length / Height, external:9.25mm; Width, RoHS Compliant: Yes
DS2251T-128-16 CONNECTOR ACCESSORY
DS2251T-32-16 128k Soft Microcontroller Module
DS2251T-64-16 CONNECTOR ACCESSORY
DS2251 128k Soft Microcontroller Module
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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