參數(shù)資料
型號: PM2329
英文描述: Telecommunication IC
中文描述: 通信集成電路
文件頁數(shù): 157/162頁
文件大小: 1581K
代理商: PM2329
Proprietary and Confidential to PMC-Sierra, Inc and for its Customers
Internal Use
Document ID: PMC-2010146, Issue 4
160
PM2329 ClassiPI Network Classification Processor Datasheet
General Note:
1. The ERAM interface timing parameters are specified with reference to SCLK.
2. Correct ERAM device should be chosen according to clock speed.
6.2.5 Cascade Interface Timing
Figure 39 Cascade Interface Timing
Table 41
E-RAM Interface Timing Parameters
Item
1
2
3
4
5
6
7
Parameter
Symbol
Temav
Temah
Temoev
Temoeh
Temcev
Temceh
Tedwev/
Tecwev
Tedweh/
Tecweh
Twdlz
Twdv
Twdhv
Twdhz
Trds
Trdh
Conditions
Max C
L
=20pF
Max C
L
=20pF
Max C
L
=20pF
Max C
L
=20pF
Max C
L
=20pF
Max C
L
=20pF
Max C
L
=15pF
Min.
Max
Unit
ns
SCLK to EMA Valid
SCLK to EMA Invalid
SCLK to EMOE* Valid
SCLK to EMOE* Invalid
SCLK to EMCE* Valid
SCLK to EMCE* Invalid
SCLK to EDWE*/
ECWE* Valid
SCLK to EDWE*/
ECWE* Invalid
SCLK to ECD/EDD Low-Z
SCLK to ECD/EDD Valid
SCLK to ECD/EDD Invalid
SCLK to ECD/EDD Hi-Z
EDD/ECD setup time
EDD/ECD hold time
5.0
1.5
5.0
ns
ns
ns
ns
ns
1.5
5.0
1.5
5.0
8
Max C
L
=15pF
1.5
ns
9
10
11
12
13
14
C
L
(see Note
a
)
C
L
(see Note
a
)
C
L
(see Note
a
)
C
L
(see Note
a
)
C
L
(see Note
a
)
C
L
(see Note
a
)
a.
The shown data bus timing parameters are based on ECD load of 20 pF and EDD load of 15 pF.
1.5
ns
ns
ns
ns
ns
ns
5.0
1.0
5.5
2.0
0.5
SCLK
COCDIN
COCDOUT
COCM*
INPUT
OUTPUT
Tcocs
Tcoch
Tcoms
Tcomh
Tdoutv
Tcomv
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