±15kV ESD Protected MII/RMII 10/100 Ethernet Transceiver with HP Auto-MDIX Support and flexPWR® Technology in a Small Footprint
Datasheet
Table 5.40 Register 26 - Symbol Error Counter
ADDRESS
NAME
DESCRIPTION
MODE DEFAULT
RO
26.15:0
Sym_Err_Cnt
100Base-TX receiver-based error register that
increments when an invalid code symbol is received
including IDLE symbols. The counter is incremented
only once per packet, even when the received packet
contains more than one symbol error. The 16-bit
0
16
register counts up to 65,536 (2 ) and rolls over to 0
if incremented beyond that value. This register is
cleared on reset, but is not cleared by reading the
register. It does not increment in 10Base-T mode.
Table 5.41 Register 27 - Special Control/Status Indications
NAME DESCRIPTION
ADDRESS
MODE DEFAULT
27.15
AMDIXCTRL
HP Auto-MDIX control
RW
0
0 - Auto-MDIX enable
1 - Auto-MDIX disabled (use 27.13 to control channel)
27.14
27.13
Reserved
Reserved
RW
RW
0
0
CH_SELECT
Manual Channel Select
0 - MDI -TX transmits RX receives
1 - MDIX -TX receives RX transmits
27.12
27:11
Reserved
SQEOFF
Write as 0. Ignore on read.
RW
0
0
Disable the SQE (Signal Quality Error) test
(Heartbeat):
0 - SQE test is enabled.
1 - SQE test is disabled.
RW,
NASR
27.10:5
27.4
Reserved
XPOL
Write as 0. Ignore on read.
RW
RO
000000
0
Polarity state of the 10Base-T:
0 - Normal polarity
1 - Reversed polarity
27.3:0
Reserved
Reserved
RO
XXXXb
Table 5.42 Register 28 - Special Internal Testability Controls
ADDRESS
NAME
DESCRIPTION
MODE DEFAULT
RW N/A
28.15:0
Reserved
Do not write to this register. Ignore on read.
Table 5.43 Register 29 - Interrupt Source Flags
ADDRESS
NAME
DESCRIPTION
MODE DEFAULT
29.15:8
Reserved
Ignore on read.
RO/
LH
0
29.7
INT7
1 = ENERGYON generated
0 = not source of interrupt
RO/
LH
X
SMSC LAN8700/LAN8700i
Revision 2.3 (04-12-11)
DATA4S7HEET
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