KSZ8721B Micrel Inc, KSZ8721B Datasheet - Page 18

• Manufacturer Part Number: KSZ8721B
• Description: IC TXRX PHY 10/100 2.5V 48-SSOP
• Manufacturer: Micrel Inc
• Type: Transceiverr

Specifications of KSZ8721B

• Number Of Drivers/receivers: 1/1
• Protocol: MII, RMII
• Voltage - Supply: 2.375 V ~ 2.625 V
• Mounting Type: Surface Mount
• Package / Case: 48-SSOP
• Data Rate: 100Mbps
• Supply Voltage Range: 2.375V To 2.625V
• Logic Case Style: SSOP
• No. Of Pins: 48
• Operating Temperature Range: 0°C To +70°C
• Msl: MSL 2 - 1 Year
• Ic Function: Transceiver IC
• Termination Type: SMD
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 576-1627 - BOARD EVALUATION FOR KSZ8721BMC576-1626 - BOARD EVALUATION FOR KSZ8721BL
• Lead Free Status / RoHS Status: Compliant, Lead free / RoHS Compliant
• Other names: 576-1026-5; 576-1510-5; 576-1510-5; KSZ8721B

KS8721B/BT
Note 1.
M9999-041405
Address
1.10:7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
Register 2h - PHY Identifier 1
2.15:0
Register 3h - PHY Identifier 2
3.15:10
3.9:4
3.3:0
Register 4h - Auto-Negotiation Advertisement
4.15
4.14
4.13
4.12 : 11
4.10
4.9
4.8
4.7
4.6
4.5
4.4:0
Register 5h - Auto-Negotiation Link Partner Ability
5.15
5.14
5.13
5.12
RW: Read/Write, RO: Read only, SC: Self clear, LH: Latch High, LL: Latch Low. Some of the default values are set by strap-in. See
“Srapping Options.”
Name
Reserved
No Preamble
Auto-Negotiation Complete
Remote Fault
Auto-Negotiation Ability
Link Status
Jabber Detect
Extended Capability
PHY ID Number
PHY ID Number
Model Number
Revision Number
Next Page
Reserved
Remote Fault
Reserved
Pause
100BaseT4
100BaseTX Full Duplex
100BaseTX
10BaseT Full Duplex
10BaseT
Selector Field
Next Page
Acknowledge
Remote Fault
Reserved
Description
1 = preamble suppression; 0 = normal preamble
1 = auto-negotiation process completed
0 = auto-negotiation process not completed
1 = remote fault; 0 = no remote fault
1 = capable to perform auto-negotiation
0 = unable to perform auto-negotiation
1 = link is up; 0 = link is down
1 = jabber detected; 0 = jabber not detected. Default is Low RO/LH
1 = supports extended capabilities registers
Assigned to the 3rd through 18th bits of the Organizationally
Unique Identifier (OUI). Micrel’s OUI is 0010A1 (hex)
Assigned to the 19th through 24th bits of the Organizationally RO
Unique Identifier (OUI). Micrel’s OUI is 0010A1 (hex)
Six bit manufacturer’s model number
Four bit manufacturer’s model number
1 = next page capable; 0 = no next page capability.
1 = remote fault supported; 0 = no remote fault
1 = pause function supported; 0 = no pause function
1 = T4 capable; 0 = no T4 capability
1 = TX with full duplex; 0 = no TX full duplex capability
1 = TX capable; 0 = no TX capability
1 = 10Mbps with full duplex
0 = no 10Mbps full duplex capability
1 = 10Mbps capable; 0 = no 10Mbps capability
[00001] = IEEE 802.3
1 = next page capable; 0 = no next page capability
1 = link code word received from partner
0 = link code word not yet received
1 = remote fault detected; 0 = no remote fault
18
Mode
RO
RO
RO
RO/LH
RO
RO/LL
RO
RO
RO
RO
RW
RO
RW
RO
RW
RO
RW
RW
RW
RW
RW
RO
RO
RO
RO
(Note 1)
Default
0
1
0
0
1
0
0
1
0022h
000101
100001
1001
0
0
0
0
0
0
Set by
SPD100 &
DUPLEX
Set by
SPD100
Set by
DUPLEX
1
00001
0
0
0
0
Micrel, Inc.
April 2005