KSZ8721B Micrel Inc, KSZ8721B Datasheet - Page 19

• 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

Note 1.
April 2005
KS8721B/BT
Address
5.11:10
5.9
5.8
5.7
5.6
5.5
5.4:0
Register 6h - Auto-Negotiation Expansion
6.15:5
6.4
6.3
6.2
6.1
6.0
Register 7h - Auto-Negotiation Next Page
7.15
7.14
7.13
7.12
7.11
7.10:0
Register 8h - Link Partner Next Page Ability
8.15
8.14
8.13
8.12
8.11
8.10:0
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
Pause
Reserved
Link Partner Next
Page Able
Auto-Negotiation Able
Reserved
100 BaseT4
100BaseTX Full Duplex
100BaseTX
10BaseT Full Duplex
10BaseT
Selector Field
Parallel Detection Fault
Next Page Able
Page Received
Link Partner
Next Page
Message Page
Acknowledge2
Toggle
Message Field
Next Page
Acknowledge
Message Page
Acknowledge2
Toggle
Message Field
Description
5.10 5 .11
0 0
No PAUSE
0 1
Asymmetric PAUSE (link partner)
1 0
Symmetric PAUSE
1 1
Symmetric & Asymmetric PAUSE (local device)
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 = fault detected by parallel detection
0 = no fault detected by parallel detection.
1 = link partner has next page capability
0 = link partner does not have next page capability
1 = local device has next page capability
0 = local device does not have next page capability
1 = new page received; 0 = new page not yet received
1 = link partner has auto-negotiation capability
0 = link partner does not have auto-negotiation capability
1 = additional next page(s) will follow; 0 = last page
1 = message page; 0 = unformatted page
1 = will comply with message
0 = cannot comply with message
1 = previous value of the transmitted link code word
equaled logic One; 0 = logic Zero
11-bit wide field to encode 2048 messages
1 = additional Next Page(s) will follow; 0 = last page
1 = successful receipt of link word
0 = no successful receipt of link word
1 = Message Page; 0 = Unformatted Page
1 = able to act on the information
0 = not able to act on the information
1 = previous value of transmitted Link Code Word equal
to logic zero; 0 = previous value of transmitted Link Code
Word equal to logic one
19
Mode
RO
RO
RO
RO
RO
RO
RO
RO
RO/LH
RO
RO
RO/LH
RO
RW
RO
RW
RW
RO
RW
RO
RO
RO
RO
RO
RO
(Note 1)
Default
0
0
0
0
0
0
00001
0
0
0
1
0
0
0
0
1
0
0
001
0
0
0
0
0
0
M9999-041405
Micrel, Inc.