參數(shù)資料
型號(hào)： XRT94L31_07
廠商： Exar Corporation
英文描述： 3-CHANNEL DS3/E3/STS-1 TO STS-3/STM-1 MAPPER IC
中文描述： 3通道DS3/E3/STS-1給STS-3/STM-1映射器集成電路
文件頁數(shù)： 5/133頁
文件大?。?/td> 1014K
代理商： XRT94L31_07
XRT94L31
5
REV. 1.0.1
3-CHANNEL DS3/E3/STS-1 TO STS-3/STM-1 MAPPER IC
AC18
PRD_L/DS*/WE*
I
TTL
READ Strobe /Data Strobe:
The function of this input pin depends upon which mode the Micropro-
cessor Interface has been configured to operate in, as described below.
Intel-Asynchronous Mode - RD* - READ Strobe Input:
If the Microprocessor Interface is operating in the Intel-Asynchronous
Mode, then this input pin will function as the RD* (Active "Low" READ
Strobe) input signal from the Microprocessor. Once this active-low sig-
nal is asserted, then the XRT94L31 will place the contents of the
addressed register (or buffer location) on the Microprocessor Bi-direc-
tional Data Bus (D[7:0]). When this signal is negated, the Data Bus will
be tri-stated.
Motorola-Asynchronous (68K) Mode - DS* - Data Strobe Input:
If the Microprocessor Interface is operating in the Motorola Asynchro-
nous Mode, then this input will function as the DS* (Data Strobe) input
signal.
PowerPC 403 Mode - WE* - Write Enable Input:
If the Microprocessor Interface is operating in the PowerPC 403 Mode,
then this input pin will function as the WE* (Write Enable) input pin.
Anytime the Microprocessor Interface samples this active-low input sig-
nal (along with CS* and WR*/R/W*) also being asserted (at a logic level)
upon the rising edge of PCLK, then the Microprocessor Interface will
(upon the very same rising edge of PCLK) latch the contents on the Bi-
Directional Data Bus (D[7:0]) into the target on-chip register or buffer
location within the XRT94L31.
AG23
ALE/AS_L
I
TTL
Address Latch Enable/Address Strobe:T
he function of this input pin depends upon which mode the Microproces-
sor Interface has been configured to operate in, as described below.
Intel-Asynchronous Mode - ALE
If the Microprocessor Interface (of the XRT94L31) has been configured
to operate in the Intel-Asynchronous Mode, then this active-high input
pin is used to latch the address (present at the Microprocessor Interface
Address Bus input pins (A[14:0]) into the XRT94L31 Microprocessor
Interface block and to indicate the start of a READ or WRITE cycle. Pull-
ing this input pin "High" enables the input bus drivers for the Address
Bus input pins (A[14:0]). The contents of the Address Bus will be latched
into the XRT94L31 Microprocessor Interface circuitry, upon the falling
edge of this input signal.
Motorola-Asynchronous (68K) Mode - AS*
If the Microprocessor Interface has been configured to operate in the
Motorola-Asynchronous Mode, then this active-low input pin is used to
latch the data (residing on the Address Bus, A[14:0]) into the Micropro-
cessor Interface circuitry of the XRT94L31.
Pulling this input pin "Low" enables the input bus drivers for the Address
Bus input pins. The contents of the Address Bus will be latched into the
Microprocessor Interface circuitry, upon the rising edge of this signal.
PowerPC 403 Mode - No Function - Tie to GND:
If the MIcroprocessor Interface has been configured to operate in the
PowerPC 403 Mode, then this input pin has no role nor function and
should be tied to GND.
PIN DESCRIPTION OF THE XRT94L31 (REV. B)
PIN #
SIGNAL NAME
I/O
TYPE
DESCRIPTION
相關(guān)PDF資料
PDF描述
XRT94L31 3-CHANNEL DS3/E3/STS-1 TO STS-3/STM-1 MAPPER
XRT94L31IB 3-CHANNEL DS3/E3/STS-1 TO STS-3/STM-1 MAPPER
XRT94L43A SONET/SDH OC-12 TO 12XDS3/E3 MAPPER
XRT94L43 SONET/SDH STS-12/STM-4 TO E3/DS3/STS-1 MAPPER/DEMAPPER
XRT94L43IB SONET/SDH STS-12/STM-4 TO E3/DS3/STS-1 MAPPER/DEMAPPER
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
XRT94L31ES-L04 功能描述:時(shí)鐘合成器/抖動(dòng)清除器 RoHS:否 制造商:Skyworks Solutions, Inc. 輸出端數(shù)量: 輸出電平: 最大輸出頻率: 輸入電平: 最大輸入頻率:6.1 GHz 電源電壓-最大:3.3 V 電源電壓-最小:2.7 V 封裝 / 箱體:TSSOP-28 封裝:Reel
XRT94L31IB 功能描述:網(wǎng)絡(luò)控制器與處理器 IC Demapper 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
XRT94L31IB-F 功能描述:網(wǎng)絡(luò)控制器與處理器 IC Demapper 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
XRT94L31IB-L 功能描述:網(wǎng)絡(luò)控制器與處理器 IC Mapper / Demapper 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
XRT94L33 制造商:EXAR 制造商全稱:EXAR 功能描述:-CHANNEL DS3/E3/STS-1 TO STS-3/STM-1 MAPPER - SONET REGISTERS
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