cx82100 Conexant Systems, Inc., cx82100 Datasheet - Page 93

• Manufacturer Part Number: cx82100
• Description: Home Network Processor Hnp
• Manufacturer: Conexant Systems, Inc.

6.2
Table 6-3. Available SDRAM Vendors
101306C
Intel
PC100 Spec.
(Rev. 1.63)
Micron
MT48LC4M16A2
Samsung
KM416S4030D
Fujitsu
MB81F641642D
NEC
PD4564841-10
IBM
19L3264-10
Toshiba
TC59S6416BFT-
10
Vendor
Spec./
CL = 2,3
BL = 1,2,4
Burst Read
Burst Write
Auto Refresh
CL = 1,2,3
BL = 1,2,4,8,FP
Burst Read
Burst Write
Single Write
Auto Refresh
Self Refresh
CL = 2,3
BL = 1,2,4,8,FP
Burst Read
Burst Write
Auto Refresh
Self Refresh
CL = 2,3
BL = 2,4,8,FP
Burst Read
Burst Write
Single Write
Auto Refresh
Self Refresh
CL = 2,3
BL = 1,2,4,8,FP
Burst Read
Single Write
Auto Refresh
Self Refresh
CL = 2,3
BL = 1,2,4,8,FP
Burst Read
Single Write
Auto Refresh
Self Refresh
CL = 2,3
BL = 1,2,4,8,FP
Burst Read
Single Write
Auto Refresh
Self Refresh
Available Vendor SDRAM ICs and Features
Features
Basic
Conexant Proprietary and Confidential Information
Although the EMAC is not fully PC100 compliant due to the fact that both the CAS#
latency and the burst length are hard wired, many other PC100 compliant vendor
SDRAMs are usable for the EMAC design. Table 6-3 lists some of these SDRAMs and
their corresponding features and access timings.
15.6
15.6
15.6
15.6
15.6
15.6
CX82100 Home Network Processor Data Sheet
Rate
Ref.
µ
µ
µ
µ
µ
µ
s
s
s
s
s
s
Period: 10 ns
High: 3 ns
Low: 3 ns
CL = 3: 8 ns
CL = 2: 10 ns
Period: 10 ns
Period: 10 ns
High: 3 ns
Low: 3 ns
CL = 3: 10 ns
CL = 2: 13 ns
High: 3 ns
Low: 3 ns
CL = 3: 10 ns
CL = 2: 15 ns
10 ns
Clock
Cycle
1M x 16 x 4 SDRAM
2 ns
2 ns
2 ns
2 ns
2 ns
3 ns
2.5 ns
Setup
Input
1 ns
1 ns
1 ns
1 ns
1 ns
1 ns
1 ns
Hold
CL = 3: 6 ns
C
CL = 3: 6 ns
CL = 2: 6 ns
CL = 3: 6 ns
CL = 2: 6 ns
CL = 3: 6 ns
CL = 2: 6 ns
CL = 3: 6 ns
CL = 2: 7 ns
CL = 3: 7 ns
CL = 2: 8 ns
7 ns
L
= 2: 6 ns
Valid
Output
3 ns
1.8 ns CL = 3: 6 ns
3 ns
3 ns
3 ns
3 ns
3 ns
Hold
Min: 3 ns
Max: 9 ns
CL = 2: 7 ns
CL = 3: 6 ns
CL = 2: 7 ns
Min: 3 ns
Max: 6 ns
CL = 3: 6 ns
CL = 2: 7 ns
Min: 3 ns
Min: 3 ns
Max: 7 ns
Min: 3 ns
Max: 10 ns
Valid to Z
200
8RF -> MRS-> 1st
Command
100
2RF min -> MRS -> 1st
Command
100
2RF min -> MRS-> 1st
Command
100
2RF min -> MRS-> 1st
Command
200
2RF min -> MRS-> 1st
Command
200
8RF -> MRS-> 1st
Command
200
8RF -> MRS-> 1st
Command
µ
µ
µ
µ
µ
µ
µ
Initialization
s -> Precharge ->
s -> Precharge ->
s -> Precharge ->
s -> Precharge ->
s -> Precharge ->
s -> Precharge ->
s -> Precharge ->
Sequence
6-3