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| 型號(hào)： | PM2329 |
| 英文描述： | Telecommunication IC |
| 中文描述： | 通信集成電路 |
| 文件頁(yè)數(shù)： | 27/162頁(yè) |
| 文件大?。?/td> | 1581K |
| 代理商： | PM2329 |
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Proprietary and Confidential to PMC-Sierra, Inc and for its Customers
’
Internal Use
Document ID: PMC-2010146, Issue 4
30
PM2329 ClassiPI Network Classification Processor Datasheet
EDWE*
U24
1
O
Extended Data Memory Write Enable (Active Low)
This is the write enable for the data memory assigned to
the PM2329. In the cascade mode, each PM2329 device
drives the write enable of the corresponding D-Word
ERAM.
Extended C-Word Data Bus
ECD[31:0]
Refer
to
section
2.3
tables
2.5-2.6
V24
32
I/O
Shared Data Bus for the C-Words in the Extended
memory. This bus transfers the C-Words to all the
PM2329 devices in the cascade. Only the primary
PM2329 writes C-Word data over this bus.
Extended C-Word Write Enable (Active Low)
ECWE*
1
O
This signal is driven by the primary PM2329 to write C-
Words to the E-RAM. In the cascade mode, this signal
from all secondary devices is left unconnected.
Table 4
Cascade Interface Signals
Signal Name
COCS
Ball #
H26
Size
1
I/O
I or O
Description
Cascade OC Start
Output for primary and input for all others. Asserted by
Primary PM2329 to indicate start of a new OC to all
others. De-asserted when all the PM2329 devices in
the cascade complete their OCs.
Cascade OC Done Inputs
COCDIN[7:0]
K24
J26
K25
K26
L24
L25
L26
M25
J24
8
I
Connected to the corresponding COCDOUT pins of the
other PM2329 devices in the Cascade. Unused
COCDIN pins should be tied high.
COCDOUT
1
O
Cascade OC Done Output
Connected to the appropriate COCDIN[n] pin on the
other PM2329 devices in the cascade.
Cascade OC Match (Active Low)
COCM*
K23
1
I/O
This signal is asserted low by a PM2329 if and only if
its own OC has resulted in a Match AND all the higher
order PM2329 devices participating in that OC have
asserted their COCDOUT signals. This signal is wire-
OR connected to all PM2329 devices and must be
pulled high by an external pull up.
Extended Memory Bus Request
CEMRQ
G26
1
I/O
This signal is asserted by the Primary PM2329 to
indicate to the other PM2329 devices in the cascade
that it has a pending Extended Memory data transfer
operation. It is used for Extended Memory bus
arbitration.
Table 3
ERAM Interface Signals
Signal Name
Ball #
Size
I/O
Description
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