參數(shù)資料
型號： 101-0517
廠商： Rabbit Semiconductor
文件頁數(shù)： 5/110頁
文件大?。?/td> 0K
描述： MODULE RABBITCORE RCM3100
標(biāo)準(zhǔn)包裝： 1
系列： RabbitCore®
模塊/板類型： MPU 核心模塊
適用于相關(guān)產(chǎn)品： RCM3100
其它名稱： 316-1021
96
RabbitCore RCM3100
E.6 Quadrature Decoder
The two-channel Quadrature Decoder accepts inputs via Parallel Port F from two external
optical incremental encoder modules. Each channel of the Quadrature Decoder accepts an
in-phase (I) and a quadrature-phase (Q) signal, and provides 8-bit counters to track shaft
rotation and provide interrupts when the count goes through the zero count in either direc-
tion. The Quadrature Decoder contains digital filters on the inputs to prevent false counts
and is clocked by the output of Timer A10. Each Quadrature Decoder channel accepts
inputs from either the upper nibble or lower nibble of Parallel Port F. The I signal is input
on an odd-numbered port bit, while the Q signal is input on an even-numbered port bit.
There is also a disable selection, which is guaranteed not to generate a count increment or
decrement on either entering or exiting the disable state. The operation of the counter as a
function of the I and Q inputs is shown below.
Figure E-2. Operation of Quadrature Decoder Counter
The Quadrature Decoders are clocked by the output of Timer A10, giving a maximum
clock rate of one-half of the peripheral clock rate. The time constant of Timer A10 must be
fast enough to sample the inputs properly. Both the I and Q inputs go through a digital fil-
ter that rejects pulses shorter than two clock periods wide. In addition, the clock rate must
be high enough that transitions on the I and Q inputs are sampled in different clock cycles.
The Input Capture (see the Rabbit 3000 Microprocessor Users Manual) may be used to
measure the pulse width on the I inputs because they come from the odd-numbered port
bits. The operation of the digital filter is shown below.
00 01 02 03 04 05 06 07 08 07 06 05 04 03 02 01 00 FF
I input
Q input
Counter
Interrupt
Rejected
Accepted
Peri Clock
Timer A10
相關(guān)PDF資料
PDF描述
101-0488 MODULE RABBITCORE RCM2210
AT45DB321B-TC IC FLASH 32MBIT 20MHZ 32TSOP
AT45DB011B-SC IC FLASH 1MBIT 20MHZ 8SOIC
SOMOMAP3530-11-1670EFCR SYSTEM ON MODULE LV OMAP3530
395-030-523-202 CARD EDGE 30POS DL .100X.200 BLK
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
101-0518 功能描述:模塊化系統(tǒng) - SOM RCM3110 RABBITCORE RoHS:否 制造商:Digi International 外觀尺寸:ConnectCore 9P 處理器類型:ARM926EJ-S 頻率:150 MHz 存儲容量:8 MB, 16 MB 存儲類型:NOR Flash, SDRAM 接口類型:I2C, SPI, UART 工作電源電壓:3.3 V 最大工作溫度:+ 85 C 尺寸:1.97 in x 1.97 in x 6.1 in
101052 制造商:RUKO 功能描述:Bulk 制造商:RUKO 功能描述:STEP DRILL 4-30MMX2MM 制造商:RUKO 功能描述:STEP DRILL, 4-30MMX2MM 制造商:RUKO 功能描述:STEP DRILL, 4-30MMX2MM; Drill Bit Size Metric:4mm; Overall Length:100mm; Drill Bit Type:Step; Drill Point Diameter:4mm; Material:HSS; Range:4mm - 30mm; Shank Dia:9mm; Step:2mm ;RoHS Compliant: NA 制造商:RUKO 功能描述:STEP DRILL, 4-30MMX2MM; Drill Bit Size Metric:4mm; Overall Length:100mm; SVHC:No SVHC (19-Dec-2012); Drill Bit Type:Step; Drill Point Diameter:4mm; Material:HSS; Range:4mm - 30mm; Shank Dia:9mm; Step:2mm ;RoHS Compliant: NA
101-0520 功能描述:模塊化系統(tǒng) - SOM RCM3200 44.2MHz CPU 512K FLASH RJ45 RoHS:否 制造商:Digi International 外觀尺寸:ConnectCore 9P 處理器類型:ARM926EJ-S 頻率:150 MHz 存儲容量:8 MB, 16 MB 存儲類型:NOR Flash, SDRAM 接口類型:I2C, SPI, UART 工作電源電壓:3.3 V 最大工作溫度:+ 85 C 尺寸:1.97 in x 1.97 in x 6.1 in
10-105-2-05 制造商:Concord Electronics Inc 功能描述:
10-105208-02P 制造商:Amphenol Aerospace 功能描述:RECEPT
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺，查看報(bào)價(jià)

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*