KSZ8795CLX
TABLE 4-31: MIIM REGISTERS (CONTINUED)
Address
Name
Description
Mode
Default
4 - 0
Selector
Field
[00001] = IEEE 802.3
RO
00001
Register 5h: Link Partner Ability
15
14
Reserved
Reserved
Reserved
Reserved
Pause
—
—
—
—
RO
RO
RO
RO
RO
0
0
0
0
0
13
12 - 11
10
1 = Link partner flow control capable.
0 = Link partner not flow control capable.
9
8
Reserved
—
RO
RO
0
0
Adv 100 Full 1 = Link partner 100BT full-duplex capable.
0 = Link partner not 100BT full-duplex capable.
7
6
Adv 100 Half 1 = Link partner 100BT half-duplex capable.
0 = Link partner not 100BT half-duplex capable.
RO
RO
RO
RO
0
Adv 10 Full 1 = Link partner 10BT full-duplex capable.
0 = Link partner not 10BT full-duplex capable.
0
0
5
Adv 10 Half 1 = Link partner 10BT half-duplex capable.
0 = Link partner not 10BT half-duplex capable.
4 - 0
Reserved
—
00001
Register 1dh: LinkMD Control/Status
15
CDT_Enable 1 = Enable cable diagnostic. After CDT test has
R/W
(SC)
0
completed, this bit will be self-cleared.
0 = Indicates cable diagnostic test (if enabled) has
completed and the status information is valid for
reading.
14 - 13
12
CDT_Result 00 = Normal condition
RO
00
0
01 = Open condition detected in cable
10 = Short condition detected in cable
11 = Cable diagnostic test has failed
CDT 10M
Short
1 = Less than 10 meter short
RO
11 - 9
8 - 0
Reserved
—
RO
RO
0
CDT_-
Distance to the fault, approximately 0.4m × CDT_-
000000000
Fault_Count Fault_Count[8:0]
Register 1fh: PHY Special Control/Status
15 - 11
10 - 8
Reserved
Port
—
RO
RO
0000000000
001
Indicate the current state of port operation mode:
Operation 000 = Reserved
Mode
001 = still in auto-negotiation
Indication
010 = 10BASE-T half duplex
011 = 100BASE-TX half duplex
100 = Reserved
101 = 10BASE-T full duplex
110 = 100BASE-TX full duplex
111 = PHY/MII isolate
7 - 6
5
Reserved
Polrvs
—
RO
RO
00
0
1 = Polarity is reversed
0 = Polarity is not reversed
4
MDI-X Status 1 = MDI
0 = MDI-X
RO
0
DS00002112A-page 110
2016 Microchip Technology Inc.
MICREL [ MICREL SEMICONDUCTOR ]
