參數(shù)資料
型號: IBM25PPC405GP-3EE266C
元件分類: 微控制器/微處理器
英文描述: 32-BIT, 266.66 MHz, RISC PROCESSOR, PBGA413
封裝: 25 X 25 MM, ENHANCED, PLASTIC, BGA-413
文件頁數(shù): 50/60頁
文件大?。?/td> 1480K
代理商: IBM25PPC405GP-3EE266C
PowerPC 405GP Embedded Processor Data Sheet
Page 54 of 60
6/20/03
I/O Specifications—133 and 200MHz
Notes:
1. The SDRAM command interface is configurable through SDRAM0_TR[LDF] to provide a 2 to 4 cycle delay before the
command is used by SDRAM.
2. SDRAM I/O timings are specified relative to a MemClkOut terminated into a lumped 10pF load.
3. SDRAM interface hold times are guaranteed at the PPC405GP package pin. System designers must use the
PPC405GP IBIS model (available from www.chips.ibm.com) to ensure their clock distribution topology minimizes
loading and reflections, and that the relative delays on clock wiring do not exceed the delays on other SDRAM signal
wiring.
4. PerClk rising edge at package pin with a 10pF load trails the internal PLB clock by approximately 0.8ns.
5. I/O H is specified at 2.4 V and I/O L is specified at 0.4 V.
Signal
Input (ns)
Output (ns)
Output Current (mA)
Clock
Notes
Setup Time
(TIS min)
Hold Time
(TIH min)
Valid Delay
(TOV max)
Hold Time
(TOH min)
I/O H
(minimum)
I/O L
(minimum)
SDRAM Interface
BA1:0
na
7.5
1
19
12
MemClkOut
1, 2
BankSel3:0
na
6.2
1
19
12
MemClkOut
2
CAS
na
7.5
1
19
12
MemClkOut
1, 2
ClkEn0:1
na
5.2
1
40
25
MemClkOut
2
DQM0:3
na
6.1
1
19
12
MemClkOut
2
DQMCB
na
6.2
1
19
12
MemClkOut
2
ECC0:7
2
1
6.2
1
19
12
MemClkOut
2
MemAddr12:0
na
7.6
1
19
12
MemClkOut
1, 2
MemData0:31
2
1
6.3
1
19
12
MemClkOut
2
RAS
na
7.5
1
19
12
MemClkOut
1, 2
WE
na
7.5
1
19
12
MemClkOut
1, 2
External Slave Peripheral Interface
DMAAck0:3
na
8
0
12
8
PerClk
DMAReq0:3
5
1
na
PerClk
EOT0:3/TC0:3
dc
8
0
12
8
PerClk
PerAddr0:31
4
1
10
0
19
12
PerClk
PerBLast
4
1
8
0
12
8
PerClk
PerCS0
PerCS1:7[GPIO10:16]
na
8
0128
PerClk
PerData0:31
6
1
10
0
19
12
PerClk
PerOE
na
8
0128
PerClk
PerPar0:3
4
1
10
0
19
12
PerClk
PerR/W
4
1
8
0
12
8
PerClk
PerReady
9
1
na
PerClk
PerWBE0:3
3
1
8
0
12
8
PerClk
External Master Peripheral Interface
BusReq
na
8
0128
PerClk
ExtAck
na
7
0128
PerClk
ExtReq
5
1
nana
PerClk
ExtReset
na
8
0
19
12
PerClk
HoldAck
na
8
0
12
8
PerClk
HoldPri
4
1
na
PerClk
HoldReq
5
1
na
PerClk
na
0.9
0.7
19
12
PLB Clk
4
PerErr
3
1
na
PerClk
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