Technical data

1.5.11 Mode Control/Status Register
15 14 13 12 11 10 9 8 No. Initial value
Reserved EDPWR
DOWN
Reserved LOW
SQEN
MDPRE
BP
FAR
LOOP
BACK
Reserved 17 xxxxH
7 6 5 4 3 2 1 0
AutoMDIX
_en
MDI mode Reserved PHY
ADBP
Force
Good Link
Status
ENER
GYON
Reserved
Table 33: Mode Control/Status Register Overview
Bit position Bit name R/W Function
15:14 - R/W Reserved
Write 0
b
; ignore on read access
13 EDPWR
DOWN
R/W EDPWRDOWN
Enables the energy detect power down function
EDPWRDOWN Energy detect power down enable
0
b
Energy detect power down disabled (initial value)
1
b
Energy detect power down enabled
12 - R/W Reserved
Write 0
b
; ignore on read access
11 LOWSQEN R/W LOWSQEN
Sets a lower threshold for the sqelch function
LOWSQEN Energy detect power down enable
0
b
Higher threshold for squelch function set
(less sensitive, initial value)
1
b
Lower threshold for squelch function enabled
(more sensitive)
10 MDPREBP R/W MDPREBP
Management data preamble bypass
MDPREBP Management data preamble bypass enable
0
b
Ignore SMI packets without preamble (initial value)
1
b
Detect SMI packets without preamble
9 FARLOOPB
ACK
R/W FARLOOPBACK
Enables the remote loopback mode in which all received packets are immedi
ately re-transmitted, if the PHY is set to 100BASE-TX or 100BASE-FX mode.
FARLOOPBACK Remote loopback mode enable
0
b
Remote loopback mode disabled (initial value)
1
b
Remote loopback mode enabled
8 - R/W Reserved
Write 0
b
; ignore on read access
Copyright © Siemens AG 2008. All rights reserved. Page 43 ERTEC 200 PHY
Technical data subject to change Version 1.0.0