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參數(shù)資料
| 型號： | DS26502LN+ |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 50/125頁 |
| 文件大小： | 0K |
| 描述： | IC T1/E1/J1 64KCC ELEMENT 64LQFP |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 160 |
| 類型： | BITS 元件，多路復(fù)用器 |
| PLL： | 是 |
| 主要目的： | T1/E1 |
| 輸入： | 時鐘 |
| 輸出： | 時鐘 |
| 電路數(shù)： | 1 |
| 比率 - 輸入:輸出： | 2:3 |
| 差分 - 輸入:輸出： | 無/無 |
| 頻率 - 最大： | 6.312MHz |
| 電源電壓： | 3.135 V ~ 3.465 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 64-LQFP |
| 供應(yīng)商設(shè)備封裝： | 64-LQFP（10x10） |
| 包裝： | 托盤 |
| 產(chǎn)品目錄頁面： | 1430 (CN2011-ZH PDF) |
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DS26502 T1/E1/J1/64KCC BITS Element
30 of 125
7. PROCESSOR INTERFACE
The DS26502 is controlled via a nonmultiplexed (BIS[1:0] = 01) or a multiplexed (BIS[1:0] = 00)
parallel bus. There is also a serial bus mode option, as well as a hardware mode of operation. The bus
interface type is selected by BIS1 and BIS0 as shown in Table 7-1.
Table 7-1. Port Mode Select
BIS1
BIS0
PORT MODE
0
Parallel Port Mode (Multiplexed)
0
1
Parallel Port Mode (Nonmultiplexed)
1
0
Serial Port Mode (SPI)
1
Hardware Mode
7.1 Parallel Port Functional Description
In parallel mode, the DS26502 can operate with either Intel or Motorola bus timing configurations. If the
BTS pin is tied low, Intel timing will be selected; if tied high, Motorola timing will be selected. All
Motorola bus signals are listed in parentheses (). See the timing diagrams in the AC Electrical
Characteristics section for more details.
7.2 SPI Serial Port Interface Functional Description
A serial SPI bus interface is selected when bus select is 10 (BIS[1:0] = 10). In this mode, a master/slave
relationship is enabled on the serial port with three signal lines (SCK, MOSI and MISO) and a chip select
(
CS), with the DS26502 acting as the slave. Port read/write timing is not related to the system read/write
timing, thus allowing asynchronous, half-duplex operation. See the AC Electrical Characteristics section
for the AC timing characteristics of the serial port.
7.2.1 Clock Phase and Polarity
Clock Phase and Polarity are selected by the CPHA and CPOL pins. The slave device should always be
configured to match the bus master. See the SPI Serial Port Mode section for detailed functional timing
diagrams.
7.2.2 Bit Order
The most significant bit (MSB) of each byte is transmitted first.
7.2.3 Control Byte
The bus master will transmit two control bytes following a chip select to a slave device. The MSB will be
a R/
W bit (1=read, 0=write). The next 6 bits will be padded with 0s. The LSB of the first byte will be
A[7]. The second control byte will be the address bits (A[6:0]) of the target register, followed by a Burst
bit in the LSB position (1=Burst, 0=Non-burst).
7.2.4 Burst Mode
The last bit of the second control byte (LSB) is the Burst mode bit. When the Burst bit is enabled (set to
1) and a read operation is performed, the register address is automatically incremented after the LSB of
the previous byte read to the next register address. Data will be available on the next clock edge following
the LSB of the previous byte read. When the Burst bit is enabled (set to 1) and a write operation is
performed, the register address will be automatically incremented to the next byte boundary following the
LSB of the previous register write, and 8 more data bits will be expected on the serial bus. Burst accesses
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS26502LN+ | 功能描述:計時器和支持產(chǎn)品 E1/T1/J1/64Kcc Bits Element RoHS:否 制造商:Micrel 類型:Standard 封裝 / 箱體:SOT-23 內(nèi)部定時器數(shù)量:1 電源電壓-最大:18 V 電源電壓-最小:2.7 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝:Reel |
| DS26503 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:T1/E1/J1/64KCC BITS Element |
| DS26503_07 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:T1/E1/J1 BITS Element |
| DS26503DK | 功能描述:時鐘和定時器開發(fā)工具 DS26503 Dev Kit RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Modules 類型:Clock Conditioners 工具用于評估:LMK04100B 頻率:122.8 MHz 工作電源電壓:3.3 V |
| DS26503L | 功能描述:計時器和支持產(chǎn)品 E1-T1-J1 Bits Element RoHS:否 制造商:Micrel 類型:Standard 封裝 / 箱體:SOT-23 內(nèi)部定時器數(shù)量:1 電源電壓-最大:18 V 電源電壓-最小:2.7 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝:Reel |
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