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参数资料
型号： XRT94L31IB
厂商： Exar Corporation
文件页数： 61/133页
文件大小： 0K
描述： IC MAPPER DS3/E3/STS-1 504TBGA
标准包装： 24
应用： 网络切换
接口： 总线
电源电压： 3.14 V ~ 3.47 V
封装/外壳： 504-LBGA
供应商设备封装： 504-TBGA（35x35）
包装： 托盘
安装类型： 表面贴装
XRT94L31
33
REV. 1.0.1
3-CHANNEL DS3/E3/STS-1 TO STS-3/STM-1 MAPPER IC
A9
D17
AF18
TxOHFRAME_0
TxOHFRAME_1
TxOHFRAME_2
O
CMOS
Transmit Overhead Framing Pulse:
This input pin functions as the Transmit Overhead Framing Pulse for the
transmit system side interface when the XRT94L31 is configured to
operate in DS3/E3 mode, however, it functions as the Transmit STS-1
Overhead Enable output when the device is configured to operate in the
STS-1 mode.
When configured to operate in DS3/E3 mode:
This output pin pulses "High" (for one TxOHClk_n period) coincident with
the instant that the DS3/E3 Frame Generator block will be accepting the
very first overhead bit within an outbound DS3 or E3 frame (via Transmit
Overhead Data Input Interface).
When configured to operate in STS-1 mode:
These output pins, along with the TxOH_n, TxOHEnable_n, TxOHIns_n
and TxOHClk_n function as the Transmit Overhead Input Port.The func-
tion of these output pins depends upon whether or not the user inserting
POH or TOH data via the TxOH_n input pins.
If the user is only inserting POH data via these input pins:
In this mode, the TxOH port will pulse these output pins "High" whenever
it is ready to accept and process the J1 byte (e.g., the very first POH
byte) via this port.
If the user is inserting both POH and TOH data via these input pins:
In this mode, the TxOH port will pulse these output pins "High" coinci-
dent with the following.
Whenever the TxOH port is ready to accept and process the A1 byte
(e.g., the very first TOH byte) via this port.
Whenever the TxOH port is ready to accept and process the J1 byte
(e.g., the very first POH byte) via this port.
NOTES:
1. The externally circuitry can determine whether or not the TxOH
port is expecting the A1 byte or the J1 byte, by checking the
state of the corresponding TxOHEnable output pin. If the
TxOHEnable_n output pin is "Low" while the TxOHFrame_n
output pin is "High", then the TxOH port is ready to process the
A1 (TOH) bytes.
2. If the TxOHEnable_n output pin is "High" while the
TxOHFrame_n output pin is "High", then the TxOH port is ready
to process the J1 (POH) bytes.
PIN DESCRIPTION OF THE XRT94L31 (REV. B)
PIN #
SIGNAL NAME
I/O
TYPE
DESCRIPTION
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相关代理商/技术参数
参数描述
XRT94L31IB-F 功能描述:网络控制器与处理器 IC Demapper 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
XRT94L31IB-L 功能描述:网络控制器与处理器 IC Mapper / Demapper 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
XRT94L33 制造商:EXAR 制造商全称:EXAR 功能描述:-CHANNEL DS3/E3/STS-1 TO STS-3/STM-1 MAPPER - SONET REGISTERS
XRT94L33_06 制造商:EXAR 制造商全称:EXAR 功能描述:3-CHANNEL DS3/E3/STS-1 TO STS-3/STM-1 MAPPER IC DATA SHEET
XRT94L33_07 制造商:EXAR 制造商全称:EXAR 功能描述:3-CHANNEL DS3/E3/STS-1 TO STS-3/STM-1 MAPPER - ATM REGISTERS
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