Specifications

405GP – Power PC 405GP Embedded Processor
AMCC 53
Revision 2.01 – January 6, 2005
Data Sheet
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.amcc.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
(T
IS
min)
Hold Time
(T
IH
min)
Valid Delay
(T
OV
max)
Hold Time
(T
OH
min)
I/O H
(minimum)
I/O L
(minimum)
SDRAM Interface
BA1:0 na na 7.5 1 19 12 MemClkOut 1, 2
BankSel
3:0 na na 6.2 1 19 12 MemClkOut 2
CAS
na na 7.5 1 19 12 MemClkOut 1, 2
ClkEn0:1 na na 5.2 1 40 25 MemClkOut 2
DQM0:3 na na 6.1 1 19 12 MemClkOut 2
DQMCB na na 6.2 1 19 12 MemClkOut 2
ECC0:7 2 1 6.2 1 19 12 MemClkOut 2
MemAddr12:0 na na 7.6 1 19 12 MemClkOut 1, 2
MemData0:31 2 1 6.3 1 19 12 MemClkOut 2
RAS
na na 7.5 1 19 12 MemClkOut 1, 2
WE
na na 7.5 1 19 12 MemClkOut 1, 2
External Slave Peripheral Interface
DMAAck0:3 na na 8 0 12 8 PerClk
DMAReq0:3 5 1 na na na na PerClk
EOT0:3/TC0:3 dc 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 na 8 0 12 8 PerClk
PerData0:31 6 1 10 0 19 12 PerClk
PerOE
na na 8 0 12 8 PerClk
PerPar0:3 4 1 10 0 19 12 PerClk
PerR/W
4 1 8 0 12 8 PerClk
PerReady 9 1 na na na na PerClk
PerWBE0:3
3 1 8 0 12 8 PerClk
External Master Peripheral Interface
BusReq na na 8 0 12 8 PerClk
ExtAck
na na 7 0 12 8 PerClk
ExtReq
5 1 na na na na PerClk
ExtReset
na na 8 0 19 12 PerClk
HoldAck na na 8 0 12 8 PerClk
HoldPri 41nanananaPerClk
HoldReq 5 1 na na na na PerClk
PerClk na na 0.9 0.7 19 12 PLB Clk 4
PerErr 3 1 na na na na PerClk