7 sdram timing, Sdram t, Iming – Maxim Integrated DS33R11 User Manual
Page 322: Table 13-12. sdram interface timing
DS33R11 Ethernet Mapper with Integrated T1/E1/J1 Transceiver
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13.7 SDRAM Timing
Table 13-12. SDRAM Interface Timing
)
100 MHz
PARAMETER SYMBOL
MIN TYP MAX
UNITS
SDCLKO Period
t1 9.7 10
10.3 ns
SDCLKO Duty Cycle
t2
4
6
ns
SDCLKO to SDATA Valid
Write to SDRAM
t3 7 ns
SDCLKO to SDATA Drive On
Write to SDRAM
t4 4 ns
SDCLKO to SDATA Invalid
Write to SDRAM
t5 3 ns
SDCLKO to SDATA Drive Off
Write to SDRAM
t6 4 ns
SDATA to SDCLKO Setup Time
Read from SDRAM
t7 2 ns
SDCLKO to SDATA Hold Time
Read from SDRAM
t8 2 ns
SDCLKO to
SRAS, SCAS, SWE, SDCS Active
Read or Write to SDRAM
t9 5 ns
SDCLKO TO
SRAS, SCAS, SWE, SDCS Inactive
Read or Write to SDRAM
t10 2 ns
SDCLKO to SDA, SBA Valid
Read or Write to SDRAM
t11 7 ns
SDCLKO TO SDA, SBA Invalid
Read or write to SDRAM
t12 2 ns
SDCLKO to SDMASK Valid
Read or write to SDRAM
t13 5 ns
SDCLKO TO SDMASK Invalid
Read or write to SDRAM
t14 2 ns
Note 1:
Timing parameters in this table are guaranteed by design (GBD).