參數(shù)資料
型號(hào): DS2422X
廠商: DALLAS SEMICONDUCTOR
元件分類: Memory IC:Other
英文描述: SPECIALTY MEMORY CIRCUIT, UUC
文件頁數(shù): 2/23頁
文件大?。?/td> 146K
代理商: DS2422X
DS2422/DS2423
021998 10/23
MEMORY FUNCTION FLOW CHART Figure 7 cont’d
A5H
READ MEMORY
+ COUNTER
?
N
BUS MASTER TX TA1 (T7:T0)
DS242X SETS MEMORY
ADDRESS = (T15:T0)
LEGEND:
DECISION MADE
BY THE MASTER
DECISION MADE
BY DS242X
BUS MASTER
TX RESET
1)
FROM FIGURE 7
SECOND PART
BUS MASTER TX TA2 (T15:T8)
1)
BUS
MASTER
TX RESET
?
END
OF PAGE
?
BUS MASTER RX COUNTER
VALUE OF MEMORY PAGE
1)
BUS MASTER RX
32 ZERO BITS
1)
BUS MASTER RX CRC 16 OF COMMAND, ADDRESS,
DATA, COUNTER, ZERO BITS (1ST PASS)
CRC 16 OF DATA, COUNTER, ZERO
BITS (SUBSEQUENT PASSES)
CRC
CORRECT
?
END
OF MEMORY
?
BUS MASTER
TX RESET
?
BUS MASTER RX 1’s
Y
N
2)
1)
DS242X INCREMENTS
ADDRESS COUNTER
BUS MASTER
TX RESET
?
2)
N
Y
N
Y
2)
N
TO FIGURE 7
SECOND PART
1)
Y
N
2)
Y
BUS MASTER RX
DATA FROM MEMORY
1)
1) To be transmitted or received at Overdrive Speed if OD = 1
2) Reset Pulse to be transmitted at Overdrive Speed if OD = 1
Reset Pulse to be transmitted at regular speed if OD = 0
or if the DS242X is to be reset from Overdrive Speed to regular speed
相關(guān)PDF資料
PDF描述
DS2423P/T&R SPECIALTY MEMORY CIRCUIT, PDSO6
DS2423P SPECIALTY MEMORY CIRCUIT, PDSO6
DS2423X SPECIALTY MEMORY CIRCUIT, UUC
DS2423 4K X 1 STANDARD SRAM, PDSO6
DS2422 1K X 1 STANDARD SRAM, PDSO6
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