Datasheet

±15kV ESD Protected MII/RMII 10/100 Ethernet Transceiver with HP Auto-MDIX Support and flexPWR
®
Technology in a Small Footprint
Datasheet
SMSC LAN8700/LAN8700i 47 Revision 2.3 (04-12-11)
DATASHEET
Table 5.40 Register 26 - Symbol Error Counter
ADDRESS NAME DESCRIPTION MODE DEFAULT
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
register counts up to 65,536 (2
16
) 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.
RO 0
Table 5.41 Register 27 - Special Control/Status Indications
ADDRESS NAME DESCRIPTION MODE DEFAULT
27.15 AMDIXCTRL HP Auto-MDIX control
0 - Auto-MDIX enable
1 - Auto-MDIX disabled (use 27.13 to control channel)
RW 0
27.14 Reserved Reserved RW 0
27.13 CH_SELECT Manual Channel Select
0 - MDI -TX transmits RX receives
1 - MDIX -TX receives RX transmits
RW 0
27.12 Reserved Write as 0. Ignore on read. RW 0
27:11 SQEOFF Disable the SQE (Signal Quality Error) test
(Heartbeat):
0 - SQE test is enabled.
1 - SQE test is disabled.
RW,
NASR
0
27.10:5 Reserved Write as 0. Ignore on read. RW 000000
27.4 XPOL Polarity state of the 10Base-T:
0 - Normal polarity
1 - Reversed polarity
RO 0
27.3:0 Reserved Reserved RO XXXXb
Table 5.42 Register 28 - Special Internal Testability Controls
ADDRESS NAME DESCRIPTION MODE DEFAULT
28.15:0 Reserved Do not write to this register. Ignore on read. RW N/A
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