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SN74ALS29818 数据表(PDF) 7 Page - Texas Instruments

部件名 SN74ALS29818
功能描述  8-BIT DIAGNOSTICS/PIPELINE REGISTERS
Download  13 Pages
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制造商  TI1 [Texas Instruments]
网页  http://www.ti.com
标志 TI1 - Texas Instruments

SN74ALS29818 数据表(HTML) 7 Page - Texas Instruments

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SN74ALS819, SN74ALS29818
8BIT DIAGNOSTICS/PIPELINE REGISTERS
SDAS105A − JANUARY 1986 − REVISED OCTOBER 1986
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
POST OFFICE BOX 1443
HOUSTON, TEXAS 77001
7
Function Tables
SN74ALS819
INPUTS
OUTPUT AND I/O
MODE
SDI
SRCLK
ORCLK
SDO
Y0 − Y7
PE
DQ0 − DQ7
OPERATION OR FUNCTION
L
X
X
SR7
OUTPUT
HI-Z
Serial input, shift right
H
L
X
SDI
(L)
OUTPUT
INPUT
Parallel load shadow register from
DQ0 − DQ7
H
L
SDI
(L)
OUTPUT
INPUT
Parallel load shadow register and pipeline
register from DQ0 − DQ7
L
X
X
L
X
X
SR7
OUTPUT
INPUT
Load pipeline register from DQ0 − DQ7
L
X
SR7
OUTPUT
INPUT
Load pipeline register from DQ0 − DQ7 while
shifting shadow register
H
H
No
SDI
(H)
OUTPUT
OUTPUT
Load pipeline register from shadow register
H
X
X
X
SDI
OUTPUT
Serial data in to serial data out
H
H
X
X
SDI
(H)
OUTPUT
OUTPUT
HOLD
Hold shadow register, enable DQ0 − DQ7,
transitions on SRCLK ignored
L
X
X
L
X
X
X
X
SR7
OUTPUT
HI-Z
Disable DQ0 − DQ7 outputs
SN74ALS29818
INPUTS
OUTPUT AND I/O
OPERATION OR FUNCTION
MODE
OEY
SDI
SRCLK
ORCLK
SDO
Y0 − Y7
DQ0 − DQ7
OPERATION OR FUNCTION
L
X
X
X
SR7
HI-Z
Serial input, shift right, disable DQ0 − DQ7
H
H
L
X
SDI
(L)
INPUT
HI-Z
Parallel load shadow register from Y0 − Y7,
disable DQ0 − DQ7
H
L
L
No
SDI
(L)
OUTPUT
HI-Z
Parallel load shadow register from pipeline
register, disable DQ0 − DQ7
L
X
X
X
SR7
INPUT†
Load pipeline register from DQ0 − DQ7
L
X
X
SR7
INPUT†
Load pipeline register from DQ0 − DQ7 while
shifting shadow register
H
X
X
No
SDI
Load pipeline register from shadow register
H
X
X
X
X
SDI
Serial data in to serial data out
H
L
L
SDI
(L)
OUTPUT
HI-Z
Exchange data between registers,
DQ0 − DQ7 disabled
H
X
H
X
X
SDI
(H)
Hold shadow register, transitions on SRCLK
do not effect shadow register
H
X
H
X
SDI
(H)
OUTPUT
Enable DQ0 − DQ7 for parallel shadow
register output
† The DQ0 −DQ7 outputs must be disabled before applying data to DQ0 −DQ7.


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