78Q8430-100CGTR/F Maxim Integrated Products, 78Q8430-100CGTR/F Datasheet - Page 81

• Manufacturer Part Number: 78Q8430-100CGTR/F
• Description: Telecom ICs 10/100MAC+PHY MULTI MEDIA OFFLOAD CNTRLR
• Manufacturer: Maxim Integrated Products

DS_8430_001
7.7.11 PHY Diagnostic Register – MR18
This register contains both user accessible and non-user accessible bits (Reserved) for internal
testmodes. The user-accessible bits are located at bit 12:8 locations.
7.7.12 PHY LED Configuration Register – MR23
Rev. 1.2
Bit
15:13
12
11
10
9
8
7:0
Bit
15:8
7:4
3:0
Symbol
RSVD
ANEGF
DPLX
RATE
RXSD
RXLCK
RSVD
Symbol
RSVD
LED1[3:0]
LED0[3:0]
Type
Type
RC
R/W
R
R
R
R
R
R
R
R
Default Description
Default Description
<1h>
<0h>
0
0
0
0
0
0
0
0
Reserved
Auto-Negotiation Fail Indication
This bit is set when auto-negotiation completes and no
common technology was found. It remains set until read.
Duplex Indication
This bit indicates the result of the auto-negotiation for
duplex arbitration as follows:
0 = half duplex was the highest common denominator
1 = full duplex was the highest common denominator
Rate Indication
This bit indicates the result of the auto-negotiation for data
rate arbitration as follows:
0 = 10Base-T was the highest common denominator
1 = 100Base-TX was the highest common denominator
Receiver Signal Detect Indication
In 10Base-T mode, this bit indicates that Manchester data
has been detected. In 100Base-TX mode, it indicates that
the receive signal activity has been detected (but not
necessarily locked on to).
Receive PLL Lock Indication
Indicates that the Receive PLL has locked onto the receive
signal for the selected speed of operation (10Base-T or
100Base-TX).
Reserved
Reserved
0000 = Link OK
0001 = RX or TX Activity (Default LED1)
0010 = TX Activity
0011 = RX Activity
0100 = Collision
0101 = 100 BASE-TX mode
0110 = 10 BASE-T mode
0111 = Full Duplex
1000 = Link OK/Blink=RX or TX Activity
0000 = Link OK (Default LED0)
0001 = RX or TX Activity
0010 = TX Activity
0011 = RX Activity
0100 = Collision
0101 = 100 BASE-TX mode
0110 = 10 BASE-T mode
0111 = Full Duplex
1000 = Link OK/Blink=RX or TX Activity
78Q8430 Data Sheet
81