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| 型號(hào)： | RTL8305S |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | 5-PORT 10/100 MBPS SINGLE CHIP SWITCH CONTROLLER |
| 中文描述： | 5端口10/100 Mbps單片開(kāi)關(guān)控制器 |
| 文件頁(yè)數(shù)： | 20/24頁(yè) |
| 文件大?。?/td> | 417K |
| 代理商： | RTL8305S |
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RTL8305S
2002/02/19
Rev. 1.2
20
7.5 Digital Timing Characteristics
Parameter
Symbol
Conditions
Min
Typical Max Units
100Base-TX Transmit System Timing
Active TX_EN Sampled to first
bit of “J on MDI output
Inactive TX_EN Sampled to
first bit of “T on MDI output
TX Propagation Delay
Bits
Bits
t
TXpd
From TXD[1:0] to TXOP/N
100Base-TX Receive System Timing
From RXIP/N to CRS_DV
Bits
First bit of “J on MDI input to
CRS_DV assert
First bit of “T on MDI input to
CRS_DV de-assert
RX Propagation Delay
6
8
Bits
From RXIP/N to CRS_DV
16
18
Bits
t
RXpd
From RXIP/N to RXD[1:0]
10Base-T Transmit System Timing
From TXD[1:0] to TXOP/N
From TXEN assert to TXOP/N
10Base-T Receive System Timing
Preamble on RXIP/N to CRS_DV asserted
TP_IDL to CRS_DV de-asserted
From RXIP/N to RXD[1:0]
LED Timing
While LED blinking
While LED blinking
Jabber Timing (10Base-T only)
From TXEN=1 to Jabber asserted
From TXEN=0 to Jabber de-asserted
15
17
Bits
TX Propagation Delay
TXEN to MDI output
t
TXpd
5
5
6
6
Bits
Bits
Carrier Sense Turn-on delay
Carrier Sense Turn-off Delay
RX Propagation Delay
t
CSON
t
CSOFF
t
RXpd
12
8
Bits
Bits
Bits
9
12
9
LED On Time
LED Off Time
t
LEDon
t
LEDoff
43
43
ms
ms
Jabber Active
Jabber de-assert
60
60
70
80
86
ms
ms
7.6 Thermal Data
Parameter
Symbol
θ
ja
Conditions
Min
Typical Max Units
24
Thermal resistance: junction to
ambient,
0 ft/s airflow
Thermal resistance: junction to
case,
0 ft/s airflow
4 layers PCB, ambient temperature 25
°
C
°
C/W
θ
jc
4 layers PCB, ambient temperature 25
°
C
3.9
°
C/W
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