KSZ9021GN TR Micrel Inc, KSZ9021GN TR Datasheet - Page 39

• Manufacturer Part Number: KSZ9021GN TR
• Description: Specifications: Number of Drivers/Receivers: 8/8 ; Type: Transceiver ; Voltage - Supply: 3.135 V ~ 3.465 V ; Package / Case: 64-VFQFN Exposed Pad ; Packaging: Tape & Reel (TR) ; Protocol: Gigabit Ethernet ; Lead Free Status: Lead Free ; RoHS Stat
• Manufacturer: Micrel Inc

Micrel, Inc.
Note:
1.
Extended Registers
September 2010
Address
31.3
31.2
31.1
31.0
Address
Register 257 (101h) – Strap Status
257.15:6
257.5
257.4:0
Register 258 (102h) – Operation Mode Strap Override
258.15:8
258.7
258.6:5
258.4
258.3:2
258.1
258.0
Register 259 (103h) – Operation Mode Strap Status
259.15:5
259.4
259.3:2
259.1
259.0
RW = Read/Write.
RC = Read-cleared
RO = Read only.
SC = Self-cleared.
LH = Latch high.
PHYAD[4:0]
Name
Duplex status
1000Base-T
Mater/Slave
status
Software
Reset
Link Status
Check Fail
Name
Reserved
CLK125_EN
status
status
Reserved
Tri-state all
digital I/Os
Reserved
NAND Tree
override
Reserved
GMII / MII
override
Reserved
Reserved
NAND Tree
strap-in status
Reserved
GMII / MII
strap-in status
Reserved
Description
Indicate chip duplex status
1 = Full-duplex
0 = Half-duplex
1 = Indicate 1000Base-T Master mode
0 = Indicate 1000Base-T Slave mode
1 = Reset chip, except all registers
0 = Disable reset
1 = Fail
0 = Not Failing
Description
1 = CLK125_EN strap-in is enabled
0 = CLK125_EN strap-in is disabled
Strapped-in value for PHY Address
1 = Tri-state all digital I/Os for further power
1 = Override strap-in for NAND Tree mode
1 = Override strap-in for GMII / MII mode
1 = Strap to NAND tree mode
1 = Strap to GMII / MII mode
saving during software power down
39
Mode
RO
RO
RW
RO
Mode
RO
RO
RO
RW
RW
RW
RW
RW
RW
RW
RO
RO
RO
RO
RO
(1)
(1)
Default
0
0
0
0
Default
0
M9999-091010-1.1
KSZ9021GN