參數(shù)資料
型號(hào): IBM3209K4060
英文描述: Telecom Switching Circuit
中文描述: 電信開關(guān)電路
文件頁數(shù): 105/131頁
文件大?。?/td> 1679K
代理商: IBM3209K4060
PRS28.4G
IBM Packet Routing Switch
prs28.03.fm
August 31, 2000
I/O Definitions and Timing
Page 105 of 131
7.1 I/O Timing
7.1.1 DASL Signals
The following table provides the skew requirements related to the DASL links.
7.1.2 OCM Interface Signals
Table 24: DASL Interface Skew
Parameter
Rating
Units
Note
Maximum skew between the two lines of a differential pair
± 130
ps
Maximum skew between two 444 Mb/s links of the same port
(This applies also for any two ports in speed expansion)
± 2
clock cycles
1
1. Clock cycle = 9ns (111.1MHz operation) to 10ns (100MHz operation).
Figure 9: OCM Interface Signals Timing Diagram
bit24
bit23
bit22
bit24
bit23
bit22
.....
.....
bit1
bit1
bit0
bit0
LSB
MSB
bit24
bit24
EMB_A_CLK
EMB_B_CLK
NEMB_SELECT
EMB_MODE
EMB_DATA_IN
EMB_DATA_OUT
Pulse > 60 ns
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