參數(shù)資料
型號: DS21Q42T+
廠商: Maxim Integrated Products
文件頁數(shù): 25/116頁
文件大小: 0K
描述: IC FRAMER ENHANCED T1 4X 128TQFP
標準包裝: 72
控制器類型: T1 調(diào)幀器
接口: 并行/串行
電源電壓: 2.97 V ~ 3.63 V
電流 - 電源: 75mA
工作溫度: 0°C ~ 70°C
安裝類型: 表面貼裝
封裝/外殼: 128-LQFP
供應商設備封裝: 128-LQFP(14x20)
包裝: 管件
DS21Q42
16 of 116
Signal Name: TLINK
Signal Description: Transmit Link Data
Signal Type: Input
If enabled via TCR1.2, this pin will be sampled on the falling edge of TCLK for data insertion into either
the FDL stream (ESF) or the Fs–bit position (D4) or the Z–bit position (ZBTSI). See Section 15 for
details.
Signal Name: TSYNC
Signal Description: Transmit Sync
Signal Type: Input /Output
A pulse at this pin will establish either frame or multiframe boundaries for the transmit side. Via
TCR2.2, the DS21Q42 can be programmed to output either a frame or multiframe pulse at this pin. If this
pin is set to output pulses at frame boundaries, it can also be set via TCR2.4 to output double–wide pulses
at signaling frames. See Section 20 for details.
Signal Name: TSSYNC
Signal Description: Transmit System Sync
Signal Type: Input
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.
Signal Name: TSIG
Signal Description: Transmit Signaling Input
Signal Type: Input
When enabled, this input will sample signaling bits for insertion into outgoing PCM T1 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.
Signal Name: TPOS
Signal Description: Transmit Positive Data Output
Signal Type: Output
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 (CCR1.6) control bit.
Signal Name: TNEG
Signal Description: Transmit Negative Data Output
Signal Type: Output
Updated on the rising edge of TCLK with the bipolar data out of the transmit side formatter.
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