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LAN9250 bảng dữ liệu(PDF) 257 Page - Microchip Technology

tên linh kiện LAN9250
Giải thích chi tiết về linh kiện  Integrated Ethernet PHY with HP Auto-MDIX
PDF  421 Pages
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nhà sản xuất  MICROCHIP [Microchip Technology]
Trang chủ  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

LAN9250 bảng dữ liệu(HTML) 257 Page - Microchip Technology

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 2015 Microchip Technology Inc.
DS00001913A-page 257
LAN9250
12.2.18.19 PHY Cable Length Register (PHY_CABLE_LEN)
Index (In Decimal): 28
Size:
16 bits
Bits
Description
Type
Default
15:12
Cable Length (CBLN)
This four bit value indicates the cable length. Refer to Section 12.2.14.2,
"Matched Cable Diagnostics," on page 227 for additional information on the
usage of this field.
Note:
This field indicates cable length for 100BASE-TX linked devices
that do not have an open/short on the cable. To determine the
open/short status of the cable, the PHY TDR Patterns/Delay
Control Register (PHY_TDR_PAT_DELAY) and PHY TDR Control/
Status Register (PHY_TDR_CONTROL_STAT) must be used.
Cable length is not supported for 10BASE-T links. Refer to Section
12.2.14, "Cable Diagnostics," on page 224 for additional
information.
RO
0000b
11:0
RESERVED - Write as 100000000000b, ignore on read
R/W
-



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