參數(shù)資料
型號: 9880
廠商: Intel Corp.
英文描述: Advanced 10/100 Repeater with Intergrated Management
中文描述: 高級10/100中繼器與綜合管理
文件頁數(shù): 85/118頁
文件大?。?/td> 1648K
代理商: 9880
Advanced 10/100 Repeater with Integrated Management
LXT9860/9880
Datasheet
Document #: 248987
Revision#: 003
Rev Date: 08/07/01
85
Table 41. 10 Mbps TP-to-IRB Timing Parameters
1
Parameter
2
Sym
Min
Typ
3
Max
Units
4
Test Conditions
TPIP/N to IR10ENA Low
t
13A
3
5.1
7
BT
IR10CLK rising edge to IR10DAT
rising edge.
t
13B
25
-
55
ns
330
pull-up, 150 pF load
on IR10DAT. 1 k
pull-up,
150 pF load on IRCLK.
IR10CLK rising edge to IR10DAT
falling edge.
t
13C
5
-
25
ns
1. This table contains propagation delays from the TP ports to the IRB for normal repeater operation. All
values in this table are output timings.
2. There is a delay of approximately 13 to 16 bit times between the assertion of IR10ENA and the assertion of
IR10CLK and IR10DAT. This delay does not affect repeater operation because downstream devices begin
generating preamble as soon as IR10ENA is asserted.
3. Typical values are at 25
°
C and are for design aid only; not guaranteed and not subject to production
testing.
4. Bit Time (BT) is the duration of one bit as transferred to/from the MAC and is the reciprocal of bit rate. BT
for 10BASE-T = 10
s or 100 ns.
Figure 39. 10 Mbps IRB-to-TP Port Timing
MACACTIVE
IR10ENA
IR10DAT
t
14A
t
14B
IR10CLK
t
14C
TPOP/N
t
14D
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