Technical data

1.5.13 Special Conrol/Status Indication Register
15 14 13 12 11 10 9 8 No. Initial value
Reserved SWRST_
FAST
SQEOFF Reserved 27 xxxxH
7 6 5 4 3 2 1 0
Reserved FEFIEN XPOL Reserved
Table 37: Special Control/Status Indication Register Overview
Bit position Bit name R/W Function
15:13 - R/W Reserved
Write 000
b
; ignore on read access
12 SWRST_
FAST
R/W SWRST_FAST
A
ccelerates software reset extension from 256µs to 10µs for production test
SWRST_FAST Software reset extension acceleration
0
b
Software reset is extended to 256µs (initial value)
1
b
Software reset is extended to 10µs (initial value)
11 SQEOFF R/W SQEOFF
Disables the SQE (“heartbeat”) test
SQEOFF SQE test disable
0
b
SQE test is enabled (initial value after HW reset)
1
b
SQE test is disabled
Note: The value is unchanged after a software reset of the PHYs.
10:6 - R/W Reserved
Write 00H; ignore on read access
5 FEFIEN R/W FEFIEN
Enables far end fault indication.
FEFIEN Far end fault indication enable
0
b
Far end fault indication is disabled (initial value,
when FX_MODE bit is 1
b
during reset)
1
b
Far end fault indication is enabled (initial value,
when FX_MODE bit is 0
b
during reset)
4 XPOL R XPOL
Indicates polarity state of a 10BASE-T link
XPOL 10BASE-T link polarity indication
0
b
Normal polarity (initial value)
1
b
Reversed polarity
3:0 - R Reserved
Ignore on read access
Table 38: Special Control/Status Indication Register Description
Copyright © Siemens AG 2008. All rights reserved. Page 47 ERTEC 200 PHY
Technical data subject to change Version 1.0.0