參數資料
型號: LXT9880AHC
英文描述: Controller Miscellaneous - Datasheet Reference
中文描述: 控制器雜項-數據表參考
文件頁數: 76/96頁
文件大?。?/td> 1309K
代理商: LXT9880AHC
LXT980/980A Dual-Speed, 5-Port Fast Ethernet Repeater
76
Datasheet
Figure 39. 10 Mbps IRB Transmit Timing
Table 46. 10 Mbps IRB Transmit Timing Parameters
Parameter
Symbol
Min
Typ
1
Max
Units
2
Test Conditions
MACACTIVE to IR10ENA
assertion delay
t
14A
100
ns
MACACTIVE High to IR10ENA Low.
4
IR10DAT (input) to IR10CLK
setup time
t
14B
20
ns
IR10DAT valid to IR10CLK rising
edge.
IR10CLK to IR10DAT (input)
hold time
t
14C
0
ns
IR10CLK rising edge to IR10DAT
change.
IR10ENA asserted to
TPOP/N active
t
14D
5
5.1
6
BT
1. Typical values are at 25
°
C and are for design aid only; they are not guaranteed and not subject to production testing.
2. 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.
3. External devices should allow at least one 10 MHz clock cycle (10 ns) between assertion of MACACTIVE and IR10ENA.
4. Input.
MACACTIVE
IR10ENA
IR10DAT
t
14A
t
14B
IR10CLK
t
14C
TPOP/N
t
14D
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