ICS1894-40
10BASE-T/100BASE-TX INTEGRATED PHYCEIVER WITH RMII INTERFACE
PHYCEIVER
Bit
17.11
Definition
When Bit = 0
When Bit = 1
Access 2 SF2
Default3
Hex
Auto-Negotiation
Progress Monitor Bit 0
Reference Decode Table Reference Decode Table
RO
LM
X
0
0
17.10
17.9
17.8
17.7
17.6
17.5
100Base-TX signal lost
Valid signal
Signal lost
RO
RO
RO
RO
RO
RO
LH
LH
LH
LH
LH
LH
0
0
0
0
0
0
100BasePLL Lock Error PLL locked
False Carrier detect Normal Carrier or Idle
PLL failed to lock
False Carrier
Invalid symbol detected Valid symbols observed Invalid symbol received
Halt Symbol detected No Halt Symbol received Halt Symbol received
Premature End detected Normal data stream
0
8
Stream contained two
IDLE symbols
17.4
17.3
Auto-Negotiation
complete
Auto-Negotiation in
process
Auto-Negotiation
complete
RO
RO
–
–
0
1
100Base-TX signal
detect
Signal present
No signal present
17.2
17.1
17.0
Jabber detect
Remote fault
Link Status
No jabber detected
Jabber detected
RO
RO
RO
LH
LH
LL
0
0
0
No remote fault detected Remote fault detected
Link is not valid
Link is valid
Register 18h - 10Base-T Operations Register
18.15
Remote Jabber Detect
No Remote Jabber
Condition detected
Remote Jabber Condition
Detected
RO
LH
0
–
18.14
18.13
18.12
Polarity reversed
Data Bus Mode
Normal polarity
Polarity reversed
RO
R0
R0
LH
–
0
–
L
Bit18.13 is latched pin RXTRI
Bit18.12 is latched SI
[1x]=RMII mode
–
[01]=SI mode (Serial interface mode)
[00]=MII mode
18.11
18.10
AMDIXEN
RXTRI
AMDIX disable
AMDIX enable
RW
RW
–
–
L
L
–
RX output enable
RX tri-state for MII/RMII
interface
18.9
REGEN
Vender reserved register Vender reserved register
RW
–
L
access enable
(byte25~byte31) access
disable
18.8
18.7
18.6
18.5
18.4
TM_SWITCH
IDT reserved
IDT reserved
Jabber inhibit
IDT reserved
Switch TMUX2 to TMUX1, test control
RW
RW/0
RW/0
RW
–
–
–
–
–
0
–
–
0
1
Read unspecified
Read unspecified
Read unspecified
Read unspecified
–
Normal Jabber behavior Jabber Check disabled
Read unspecified Read unspecified
RW/1
IDT® 10BASE-T/100BASE-TX INTEGRATED PHYCEIVER WITH RMII INTERFACE
23
ICS1894-40
REV G 060110
IDT [ INTEGRATED DEVICE TECHNOLOGY ]
