參數資料
型號: KS8993M
廠商: Micrel Inc
文件頁數: 38/85頁
文件大小: 0K
描述: IC SWITCH 10/100 3PORT 128PQFP
標準包裝: 66
系列: *
類型: *
應用: *
安裝類型: 表面貼裝
封裝/外殼: 128-BFQFP
供應商設備封裝: 128-PQFP(14x20)
包裝: 管件
配用: 576-1013-ND - BOARD EVAL EXPERIMENT KS8993M
Micrel, Inc.
KS8993M/ML/MI
April 2005
43
M9999-041205
Loopback Support
The KS8993M provides loopback support for remote diagnostic of failure. In loopback mode, the speed at both
PHY ports needs to be set to 100BASE-TX, and the “Priority Buffer reserve” bit needs to be set to 48 pre-
allocated buffers per output queue. The latter is required to prevent loopback packet drops and is achieved by
setting register 4 bit 0 to ‘1’.
Bit 0 of registers 29 and 45 is used to enable loopback for ports 1 and 2, respectively.
Alternatively, the MII Management register 0, bit 14 can be used to enable loopback.
Loopback is conducted between the KS8993M’s two PHY ports. The loopback path starts at the “Originating.”
PHY ports receive inputs (RXP/RXM), wraps around at the “l(fā)oopback” PHY port’s PMD/PMA, and ends at the
“Originating” PHY port’s transmit outputs (TXP/TXM). The KS8993M loopback path is illustrated in the following
figure.
Figure 12. Loopback Path
相關PDF資料
PDF描述
ESA49DTAH CONN EDGECARD 98POS R/A .125 SLD
EMA49DTAH CONN EDGECARD 98POS R/A .125 SLD
LFXP20E-4F388C IC FPGA 19.7KLUTS 268I/O 388-BGA
ESA49DTAD CONN EDGECARD 98POS R/A .125 SLD
EMA49DTAD CONN EDGECARD 98POS R/A .125 SLD
相關代理商/技術參數
參數描述
KS8993M_11 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:Integrated 3-Port 10/100 Managed Switch with PHYs
KS8993MA5 功能描述:IC SWITCH 3-PORT 10/100 128-PQFP RoHS:否 類別:集成電路 (IC) >> 專用 IC 系列:* 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:1 系列:- 類型:調幀器 應用:數據傳輸 安裝類型:表面貼裝 封裝/外殼:400-BBGA 供應商設備封裝:400-PBGA(27x27) 包裝:散裝
KS8993M-EVAL 功能描述:BOARD EVAL EXPERIMENT KS8993M RoHS:否 類別:編程器,開發(fā)系統(tǒng) >> 評估演示板和套件 系列:- 產品培訓模塊:Obsolescence Mitigation Program 標準包裝:1 系列:- 主要目的:電源管理,電池充電器 嵌入式:否 已用 IC / 零件:MAX8903A 主要屬性:1 芯鋰離子電池 次要屬性:狀態(tài) LED 已供物品:板
KS8993MI 功能描述:IC SWITCH 10/100 3PORT 128PQFP RoHS:否 類別:集成電路 (IC) >> 專用 IC 系列:* 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:1 系列:- 類型:調幀器 應用:數據傳輸 安裝類型:表面貼裝 封裝/外殼:400-BBGA 供應商設備封裝:400-PBGA(27x27) 包裝:散裝
KS8993ML 功能描述:IC SWITCH 10/100 3PORT 128PQFP RoHS:否 類別:集成電路 (IC) >> 專用 IC 系列:* 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:1 系列:- 類型:調幀器 應用:數據傳輸 安裝類型:表面貼裝 封裝/外殼:400-BBGA 供應商設備封裝:400-PBGA(27x27) 包裝:散裝