參數(shù)資料
型號(hào): MPC2104
廠商: Motorola, Inc.
英文描述: 256KB and 512KB BurstRAM Secondary Cache Modules for PowerPC PReP/CHRP Platforms
中文描述: 256KB和512KB的二級(jí)緩存模塊BurstRAM為PowerPC制備/ CH旺平臺(tái)
文件頁數(shù): 16/24頁
文件大?。?/td> 228K
代理商: MPC2104
MPC2104
MPC2105
MPC2106
MPC2107
16
MOTOROLA FAST SRAM
TAG RAM
RESET FUNCTION TRUTH TABLE
(See Notes 1 and 2)
TCLR
CLK
TWE
TAG
VLDout
L(3)
DTYout
L(3)
WTout
L(3)
MATCH
L(3)
TA
Operation
POWER
L
L – H
H
High–Z
High–Z
Reset Status
Active
L
L – H
L
Not Allowed
NOTES:
1. H = VIH, L = VIL, X = don‘t care, — = unrelated.
2. TOE is X for this table.
READ FUNCTION TRUTH TABLE
(See Notes 1, 2, and 3)
TOE
TWE
CLK
TAG
VLDin
DTYin
WTin
VLDout
DTYout
WTout
MATCH
Operation
L
H
X
DOUT
High–Z
DOUT
Read Tag I/O
H
X
X
Tag I/O Disable
WRITE FUNCTION TRUTH TABLE
(See Notes 1 and 2)
TOE
TWE
CLK
TAG
VLDin
DTYin
WTin
VLDout
DOUT
DTYout
DOUT
WTout
DOUT
MATCH
Operation
H
L
L – H
DIN
L
Write Tag I/O
L
L
L – H
Not Allowed
NOTES:
1. H = VIH, L = VIL, X = don‘t care, — = unrelated.
2. This table applies when RESET and PWRDN are high.
3. DOUT in this case is the same as DIN. The input data is written through to the outputs during the write operation.
MATCH FUNCTION TRUTH TABLE
(See Notes 1 through 4)
TOE
TWE
TAG
VLD(4)
DTY(4)
WT(4)
MATCH
Operation
X
X
DOUT
L
Selected
L
H
DOUT
DIN
TAGIN
TAGIN
Read Tag I/O
H
L
DIN
L
DIN
DIN
L
Write Tag I/O, Status Bits
H
H
L
Invalid Data – Dedicated Status Bits
H
H
H
M
Match – Dedicated Status Bits
NOTES:
1. H = VIH, L = VIL, X = don‘t care, — = unrelated.
2. M = high if TAGIN equals the memory contents at the address; M = low if TAGIN does not equal the ocntents at that address.
3. PWRDN and RESET are high for this table. OES and CLK are X.
4. This column represents the stored memory cell data for the given status bit at the selected address.
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