參數(shù)資料
型號: DS21348T
廠商: DALLAS SEMICONDUCTOR
元件分類: Digital Transmission Interface
英文描述: DATACOM, PCM TRANSCEIVER, PQFP44
封裝: TQFP-44
文件頁數(shù): 6/67頁
文件大?。?/td> 339K
代理商: DS21348T
DS21348/Q348
14 of 67
Acronym
Pin
I/O
Description
TPD
13
I
Transmit Power Down.
0 = normal transmitter operation
1 = powers down the transmitter and tri-states the TTIP and TRING
pins
TPOS
41
I
Transmit Positive Data. Sampled on the falling edge (CCR2.1 = 0)
or the rising edge (CCR2.1 = 1) of TCLK for data to be transmitted
out onto the line.
TTIP/
TRING
34/
37
O
Transmit Tip and Ring [TTIP & TRING]. Analog line driver
outputs. These pins connect via a step-up transformer to the line.
See Section 7 for details.
TX0/
TX1
14/
15
I
Transmit Data Source Select Bits 0 & 1 [H/W Mode]. These
inputs determine the source of the transmit data. See Table 4-5.
VDD
21/
36
-
Positive Supply. 3.3 volts +/-5%.
VSM
20
I
Voltage Supply Mode. Should be tied low for 3.3V operation.
VSS
22/
35
-
Signal Ground.
WR*
(R/W*)
3I
Write Input (Read/Write).
WR* is an active low signal. See the
Bus Timing Diagrams in section 12.
NOTES:
1. Serial Port Mode pins are double underlined and Hardware Mode pins are single underlined.
2. G.703 requires an accuracy of +/-50 ppm for both T1 and E1. TR62411 and ANSI specs require an
accuracy of +/- 32 ppm for T1 interfaces.
3. * Denotes active low.
相關(guān)PDF資料
PDF描述
DS21348TN DATACOM, PCM TRANSCEIVER, PQFP44
DS21348G DATACOM, PCM TRANSCEIVER, BGA49
DS21Q348N DATACOM, PCM TRANSCEIVER, PBGA144
DS21Q348 DATACOM, PCM TRANSCEIVER, PBGA144
DS21352L DATACOM, PCM TRANSCEIVER, PQFP100
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DS21348T+ 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 3.3V E1/T1/J1 Line Interface RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流(最大值):595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
DS21348TB 功能描述:網(wǎng)絡(luò)控制器與處理器 IC RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流(最大值):595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
DS21348TN 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 3.3V E1/T1/J1 Line Interface RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流(最大值):595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
DS21348TN+ 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 3.3V E1/T1/J1 Line Interface RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流(最大值):595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
DS21348TNB 功能描述:網(wǎng)絡(luò)控制器與處理器 IC RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流(最大值):595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray