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參數(shù)資料
| 型號(hào)： | LS7566 |
| 廠商： | LSI Corporation |
| 元件分類： | 通用總線功能 |
| 英文描述： | 24-BIT FOUR-AXES QUADRATURE COUNTER |
| 中文描述： | 24位的4軸正交計(jì)數(shù)器 |
| 文件頁(yè)數(shù)： | 2/13頁(yè) |
| 文件大?。?/td> | 97K |
| 代理商： | LS7566 |
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PR (x0PR, x1PR, x2PR, x3PR)
The PR is a 24-bit data register directly address-
able for
write in individual segments of byte0 [PR0],
byte1 [PR1] and byte2 [PR2]. The PR serves as the in-
put portal for the counter (CNTR), since the CNTR is not
directly addressable for either read or write. In order to
preset the CNTR to any desired value the data is first
written into the PR and then transferred into the CNTR.
B23------------------------------------------------------------B0
PR: PR2 PR1 PR0
B7----------------B0 B7-------------B0 B7--------------B0
In
mod-n
and
range-limit
count modes the PR serves
as the repository for the division factor n and the count
range-limit, respectively. The PR can also be used to
hold the compare data for the CNTR wherein the equal-
ity PR = CNTR sets an output flag.
CNTR (x0CNTR, x1CNTR, x2CNTR, x3CNTR):
The CNTR is a 24-bit up/down counter which counts the
up/down pulses resulting from tthe quadrature clocks ap-
plied at A and B inputs or alternatively, in non-
quadrature mode, pulses applied at the A input. The
CNTR is not directly accessible for read or write; instead
it can be preloaded with data from the PR or it can port
its own data out to the OL which in turn can be accessed
by read operation. In both quadrature and non-
quadrature modes, the CNTR can be further configured
into either free-running or single-cycle or mod-n or
range-limit mode.
OL (x0OL, x1OL, x2OL, x3OL):
The OL is a 24-bit register directly addressable for read
in individual segments of byte0 [OL1], byte1 [OL1] and
byte2 [OL2]. OL serves as the output portal for the
CNTR. Snapshot of the CNTR data can be loaded in the
OL without interfering with the counting process, which
then can be accessed by read.
B23-----------------------------------------------------------B0
OL: OL2 OL1 OL0
B7----------------B0 B7-------------B0 B7--------------B0
STR (x0STR, x1STR, x2STR, x3STR):
The STR is an 8-bit status register indicating count related
status.
STR: CY BW CMP IDX CEN 0 U/D S
B7 B6 B5 B4 B3 B2 B1 B0
An individual STR bit is set to 1 when the bit related event
has taken place. The STR is cleared to 0 at power-up. The
STR can also be cleared through the control register CMR
with the exception of bit1 (U/D) and bit3 (CEN). These two
STR bits always indicate the instantaneous status of the
count_direction and count_enable assertion/de-assertion.
The STR bits are described below:
B7 (CY): Carry; set by CNTR overflow
B6 (BW): Borrow; set by CNTR underflow
B5 (CMP): Set when CNTR = PR
B4 (IDX): Set when INDX input is at active level
B3 (CEN): Set when counting is enabled, reset when
counting is disabled
B2 (0): Always 0
B1 (U/D): Set when counting up, reset when counting
down
B0 (S): Sign of count value; set when negative, reset
when positive
7566-112904-2
IMR:
The IMR is a trans-axis global register used for masking out
the interrupt function of individual axes. It is a 4-bit read/write
register with the following bit assignments.
IMR: B3 B2 B1 B0
B0
= 0: disable axis 0 interrupt
= 1: enable axis 0 interrupt
B1
= 0: disable axis 1 interrupt
= 1: enable axis 1 interrupt
B2
= 0: disable axis 2 interrupt
= 1: enable axis 2 interrupt
B3
= 0: disable axis 3 interrupt
= 1: enable axis 3 interrupt
A write to IMR places the lower nibble of the databus into the
IMR with identical bit map. A read of IMR produces a joint
read of IMR and ISR (interrupt status register), with IMR oc-
cupying the lower nibble and ISR occupying the upper nibble
of the databus.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LS7566R | 制造商:LSI 制造商全稱:LSI 功能描述:24-BIT x 4-AXES QUADRATURE COUNTER |
| LS75C2D | 制造商:Citizen Finetech Miyota Co Ltd 功能描述:CITIZEN SWITCH a??LS75C2D-Ta?? |
| LS75C2D-T | 功能描述:Tactile Switch SPST-NO Top Actuated Surface Mount 制造商:citizen 系列:LS75C 包裝:剪切帶（CT） 零件狀態(tài):有效 電路:SPST-NO 開(kāi)關(guān)功能:關(guān)-瞬時(shí) 不同電壓時(shí)的觸頭額定電流:0.02A @ 12VDC 致動(dòng)器類型:標(biāo)準(zhǔn) 安裝類型:表面貼裝 PCB 外致動(dòng)器高度（從引腳計(jì)算）:0.50mm 致動(dòng)器方向:頂部觸動(dòng) 端子類型:SMD（SMT）接片 外形:2.80mm x 1.90mm 照明:不發(fā)光 照明電壓（標(biāo)稱值）:- 照明類型，顏色:- 作用力:160gf 侵入防護(hù):- 特性:- 致動(dòng)器材料:- 開(kāi)關(guān)行程:0.15mm 機(jī)械壽命:300，000 次循環(huán) 工作溫度:- 標(biāo)準(zhǔn)包裝:1 |
| LS75C4D | 制造商:Citizen Finetech Miyota Co Ltd 功能描述:CITIZEN SWITCH a??LS75C4D-Ta?? |
| LS75C4D-T | 功能描述:Tactile Switch SPST-NO Top Actuated Surface Mount 制造商:citizen 系列:LS75C 包裝:剪切帶（CT） 零件狀態(tài):有效 電路:SPST-NO 開(kāi)關(guān)功能:關(guān)-瞬時(shí) 不同電壓時(shí)的觸頭額定電流:0.02A @ 12VDC 致動(dòng)器類型:標(biāo)準(zhǔn) 安裝類型:表面貼裝 PCB 外致動(dòng)器高度（從引腳計(jì)算）:0.50mm 致動(dòng)器方向:頂部觸動(dòng) 端子類型:SMD（SMT）接片 外形:2.80mm x 1.90mm 照明:不發(fā)光 照明電壓（標(biāo)稱值）:- 照明類型，顏色:- 作用力:240gf 侵入防護(hù):- 特性:- 致動(dòng)器材料:- 開(kāi)關(guān)行程:0.15mm 機(jī)械壽命:300，000 次循環(huán) 工作溫度:- 標(biāo)準(zhǔn)包裝:1 |
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