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| 型号： | WBLXT974BHCA8 |
| 厂商： | CORTINA SYSTEMS INC |
| 元件分类： | 网络接口 |
| 英文描述： | DATACOM, ETHERNET TRANSCEIVER, PQFP160 |
| 封装： | ROHS COMPLIANT, PLASTIC, MS-002DD-1, HQFP-160 |
| 文件页数： | 32/76页 |
| 文件大小： | 1004K |
| 代理商： | WBLXT974BHCA8 |
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LXT974/LXT975 — Fast Ethernet 10/100 Quad Transceivers
38
Datasheet
2.7.1
Serial LED Output
The LXT974/975 provides a serial LED interface which should be attached to an external shift
register. This interface provides 24 status bits (6 x 4 ports). Each port reports the following
conditions:
Transmit (T)
0 = Transmit active
1 = Transmit inactive
Receive (R)
0 = Receive active
1 = Receive inactive
Link (L)
0 = Link active
1 = Link inactive
Duplex (D)
0 = Half-Duplex
1 = Full-Duplex
Speed (S)
0 = 100 Mbps
1 = 10 Mbps
Collision (C)
0 = Collision active
1 = Collision inactive
LED Data is output on LEDDAT in sets of 24 bits. The serial burst is repeated every 1 ms. A
status change in any bit also triggers an immediate serial burst (following the minimum inter-burst
gap of 10
μs). LEDENA is driven High for the duration of the LEDDAT output.
2.7.2
Per Port LEDs
The LXT974/975 provides three LED outputs for each port (LEDn_0, LEDn_1 and LEDn_2,
where n = port number). These outputs can directly drive LEDs to indicate activity and collision
status. The active Low “on” times are normally extended for improved LED visibility. The on-
time extension can be disabled by setting bit 16.0 = 1.
2.7.2.1
LEDn_0
In default mode, LED_0 indicates transmitter active. However, LEDn_0 is programmable and may
also be set to indicate receiver active, link, or full-duplex status. Refer to LED Configuration
Register, Table 51 on page 68, for details on programming options.
2.7.2.2
LEDn_1
In default mode, LED_1 indicates receiver active. However, LEDn_1 is programmable and may
also be set to indicate link status, full-duplex status or operating speed. Refer to LED
Configuration Register, Table 51 on page 68, for details on programming options.
2.7.2.3
LEDn_2
In default mode, active Low output indicates link up. However, LEDn_2 is programmable and
may also be set to indicate full-duplex status, operating speed or collision. Refer to LED
Configuration Register, Table 51 on page 68, for details on programming options.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| WBLXT975BHC.A8 | 功能描述:IC ENET 10/100QUAD TXCVR 160HQFP RoHS:是 类别:集成电路 (IC) >> 接口 - 驱动器，接收器，收发器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:25 系列:- 类型:收发器 驱动器/接收器数:2/2 规程:RS232 电源电压:4.5 V ~ 5.5 V 安装类型:通孔 封装/外壳:16-DIP（0.300"，7.62mm） 供应商设备封装:16-PDIP 包装:管件 |
| WBLXT9785EHC.D0865110 | 功能描述:IC TXRX 8PORT ETHERNET 208-HQFP RoHS:是 类别:集成电路 (IC) >> 接口 - 驱动器，接收器，收发器 系列:- 标准包装:1,000 系列:- 类型:收发器 驱动器/接收器数:2/2 规程:RS232 电源电压:3 V ~ 5.5 V 安装类型:表面贴装 封装/外壳:16-SOIC（0.295"，7.50mm 宽） 供应商设备封装:16-SOIC 包装:带卷 (TR) |
| WBLXT9785EHC.D0-865110 | 制造商:Cortina Systems Inc 功能描述:PHY 8-CH 10Mbps/100Mbps 208-Pin PQFP |
| WBLXT9785EHC.D0-865111 | 制造商:Cortina Systems Inc 功能描述:PHY 8-CH 10Mbps/100Mbps 208-Pin PQFP |
| WBLXT9785HC.D0 | 功能描述:IC TXRX 8PORT ETHERNET 208-HQFP RoHS:是 类别:集成电路 (IC) >> 接口 - 驱动器，接收器，收发器 系列:- 标准包装:1,000 系列:- 类型:收发器 驱动器/接收器数:2/2 规程:RS232 电源电压:3 V ~ 5.5 V 安装类型:表面贴装 封装/外壳:16-SOIC（0.295"，7.50mm 宽） 供应商设备封装:16-SOIC 包装:带卷 (TR) |
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