S/UNI-IMA-4 Telecom Standard Product Data Sheet
Released
Figure 50 Power Up and Initialization Sequence
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sysclk
Vcc
CBRI performs first arbitration on cycle following MRS
SDRAM Initialization Sequence (78 cyc)
bucb_cben
REFA & tRC (9 cyc) sequence must be
repeated 8 times, prior to MRS
tRP (3cyc)
PRE NOP
tRC (9cyc)
NOP
cbcmd
cbcsb
NOP
REF
NOP
REF
MR
cbrasb
cbcasb
cbweb
cbdqm
cbbs[1:0]
cba[11:0]
cbdq[15:0]
00
400h
033
Proprietary and Confidential to PMC-Sierra, Inc., and for its customers’ internal use.
Document No.: PMC-2020889, Issue 2
303
PMC [ PMC-SIERRA, INC ]
