
Advance Information
PowerNPTM NPe405L Embedded Processor Data Sheet
46
SysClk
n/a
SysErr
n/a
5.3
1.7
12
8
SysReset
n/a
12
8
TestEn
dc
n/a
TmrClk
n/a
async
n/a
SDRAM Interface
BA1:0
n/a
5.5
1.5
19
12
SysClk
1, 2
BankSe3:0
n/a
4.6
1.0
19
12
SysClk
2
CAS
n/a
5.3
1.4
19
12
SysClk
1, 2
ClkEn0:1
n/a
3.9
1.0
40
25
SysClk
2
DQM3:0
n/a
4.7
1.0
19
12
SysClk
2
DQMCB
n/a
4.7
1.0
19
12
SysClk
2
ECC7:0
1.8
0.3
4.5
1.0
19
12
SysClk
2
MemAddr12:0
n/a
5.5
1.4
19
12
SysClk
1, 2
MemClkOut0:1
n/a
0.4
-1.2
19
12
SysClk
2, 3
MemData31:0
1.8
0.3
4.4
1.0
19
12
SysClk
2
RAS
n/a
5.7
1.6
19
12
SysClk
1, 2
WE
n/a
5.4
1.4
19
12
SysClk
1, 2
External Slave Peripheral Interface
DMAReq0:3[GPIO9:12]
4.1
0.0
5.5
1.1
n/a
PerClk
DMAAck0:3[GPIO13:16]
n/a
5.8
1.1
12
8
PerClk
EOT0:3[TC0:3]
[GPIO24:27]
3.7
-0.1
6.7
1.2
12
8
PerClk
PerAddr4:31
n/a
6.5
0.9
17
11
PerClk
PerBLast
n/a
5.6
1.4
12
8
PerClk
PerCS0:3
n/a
5.5
1.3
12
8
PerClk
PerData0:15
3.9
1.0
7.1
1.0
17
11
PerClk
PerOE
n/a
5.7
1.4
12
8
PerClk
PerPar0:1
2.7
0.0
6.4
0.9
17
11
PerClk
PerR/W
n/a
5.7
1.4
12
8
PerClk
PerReady
6.2
-0.5
n/a
PerClk
PerWBE0:1
n/a
5.7
1.3
12
8
PerClk
n/a
0.5
-0.9
17
11
PLB Clk
4
PerErr
3.5
-0.6
n/a
PerClk
PerWE[GPIO31]
n/a
7.0
1.3
12
8
I/O Specications—266MHz (Part 3 of 3)
Notes:
1. Ethernet interface meets timing requirements as defined by IEEE 802.3 standard.
2. The two-cycle SDRAM command interface is driven in cycle 1 and used in cycle 2. Output times in table are in cycle 1.
3. SDRAM output timing is relative to the rising edge of the internal PLB clock, which is an integral multiple of and rising-
edge aligned with SysClk. Therefore, SDRAM output timings in the table are shown relative to SysClk. Timings shown
are for a lumped 50pF load, however the interface has been verified for PC100-compliant operation using transmission
line circuit analysis.
4. SDRAM MemClkOut0:1 rising edge at package pin precedes the internal PLB clock by approximately 0.5ns for a
typical clock network or a lumped 10pF load.
5. PerClk rising edge at package pin with a 10pF load trails the internal PLB clock by approximately 0.8ns.
Signal
Input (ns)
Output (ns)
Output Current (mA)
Clock
Notes
Setup Time
(minimum)
Hold Time
(minimum)
Valid Delay
(maximum)
50pF load
Hold Time
(minimum)
50pF load
I/O H
(maximum)
I/O L
(minimum)