- 您现在的位置：买卖IC网 > PDF目录97866 > DS21348TN (DALLAS SEMICONDUCTOR) DATACOM, PCM TRANSCEIVER, PQFP44 PDF资料下载
参数资料
| 型号： | DS21348TN |
| 厂商： | DALLAS SEMICONDUCTOR |
| 元件分类： | Digital Transmission Interface |
| 英文描述： | DATACOM, PCM TRANSCEIVER, PQFP44 |
| 封装： | TQFP-44 |
| 文件页数： | 4/67页 |
| 文件大小： | 339K |
| 代理商： | DS21348TN |
第1页第2页第3页当前第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页第67页
DS21348/Q348
12 of 67
Acronym
Pin
I/O
Description
JAMUX
9I
Jitter Attenuator MUX. Controls the source for JACLK. See
Figure 3-1and Table 4-9.
0 = JACLK sourced from MCLK (2.048 MHz or 1.544 MHz at
MCLK)
1 = JACLK sourced from internal PLL (2.048 MHz at MCLK)
JAS
10
I
Jitter Attenuator Select.
0 = place the jitter attenuator on the receive side
1 = place the jitter attenuator on the transmit side
L0/L1/L2
7/
6/
5
I
Transmit LIU Waveshape Select Bits 0 & 1 [H/W Mode]. These
inputs determine the waveshape of the transmitter. See Table 9-1 &
Table 9-2.
LOOP0/
LOOP1
16/
17
I
Loopback Select Bits 0 & 1 [H/W Mode]. These inputs determine
the active loopback mode (if any). See Table 4-4.
MCLK
30
I
Master Clock. A 2.048 MHz (+/-50 ppm) clock source with TTL
levels is applied at this pin. This clock is used internally for both
clock/data recovery and for jitter attenuation. Use of a T1 1.544
MHz clock source is optional.
See note 2 on clock accuracy at the end of this table.
MM0/
MM1
18/
19
I
Monitor Mode Select Bits 0 & 1 [H/W Mode]. These inputs
determine if the receive equalizer is in a monitor mode. See Table
4-7.
NA
-I
Not Assigned. Should be tied low.
NRZE
3I
NRZ Enable [H/W Mode].
0 = Bipolar data at RPOS/RNEG and TPOS/TNEG
1 = NRZ data at RPOS and TPOS or TNEG; RNEG outputs a
positive going pulse when device receives a BPV, CV, or EXZ.
OCES
9I
Output Clock Edge Select. Selects whether the serial port data
output (SDO) is valid on the rising (OCES = 1) or falling edge
(OCES = 0) of SCLK.
PBEO
24
O
PRBS Bit Error Output. The receiver will constantly search for a
2
15-1 or a 220-1 PRBS depending on the ETS bit setting (CCR1.7).
Remains high if out of synchronization with the PRBS pattern.
Goes low when synchronized to the PRBS pattern. Any errors in the
received pattern after synchronization will cause a positive going
pulse (with same period as E1 or T1 clock) synchronous with
RCLK. PRBS bit errors can also be reported to the ECR1 and
ECR2 registers by setting CCR6.2 to a logic 1.
PBTS
44
I
Parallel Bus Type Select. When using the parallel port (BIS1 = 0),
set high to select Motorola bus timing, set low to select Intel bus
timing. This pin controls the function of the RD*(DS*), ALE(AS),
and WR*(R/W*) pins. If PBTS = 1 and BIS1 = 0, then these pins
assume the Motorola function listed in parenthesis (). In serial port
mode, this pin should be tied low.
RCLK
40
O
Receive Clock. Buffered recovered clock from the line.
Synchronous to MCLK in absence of signal at RTIP and RRING.
相关PDF资料 |
PDF描述 |
|---|---|
| DS21348G | DATACOM, PCM TRANSCEIVER, BGA49 |
| DS21Q348N | DATACOM, PCM TRANSCEIVER, PBGA144 |
| DS21Q348 | DATACOM, PCM TRANSCEIVER, PBGA144 |
| DS21352L | DATACOM, PCM TRANSCEIVER, PQFP100 |
| DS21352LN | DATACOM, PCM TRANSCEIVER, PQFP100 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DS21348TN+ | 功能描述:网络控制器与处理器 IC 3.3V E1/T1/J1 Line Interface RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流（最大值）:595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray |
| DS21348TNB | 功能描述:网络控制器与处理器 IC RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流（最大值）:595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray |
| DS21348T-W | 功能描述:网络控制器与处理器 IC RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流（最大值）:595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray |
| DS21349 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:3.3V T1/J1 Line Interface Unit |
| DS21349DK | 功能描述:网络开发工具 DS21349 Design Kit RoHS:否 制造商:Rabbit Semiconductor 产品:Development Kits 类型:Ethernet to Wi-Fi Bridges 工具用于评估:RCM6600W 数据速率:20 Mbps, 40 Mbps 接口类型:802.11 b/g, Ethernet 工作电源电压:3.3 V |
发布紧急采购，3分钟左右您将得到回复。