KS8737 Micrel Inc, KS8737 Datasheet - Page 17

• Manufacturer Part Number: KS8737
• Manufacturer: Micrel Inc

Specifications of KS8737

• Lead Free Status / RoHS Status: Not Compliant

Mode Selection for Register 1fh 4:2
KS8737 can be forced into a specific mode on reset by configuring MODE pins specified in the following table. The strapping
option of MODE pins are latched on the rising edge of reset to set the default value of various registers. The values can be
modified by writing into the registers.
Note 1.
Note 2.
August 2003
KS8737
Mode
(Note 1)
1
1
0
0
Z
Z
1
0
0
0
1
1
1
0
1
0
Z indicates that input is floating.
* indicates that values are controlled by FDX.
(Note 2)
FDX
0
1
0
1
*
*
*
*
Mode Definition
Force 10BaseT Half-Duplex. No Auto-Negotiation.
Force 10BaseT Full-Duplex. No Auto-Negotiation.
Force 100BaseTX Half-Duplex. No Auto-Negotiation.
Force 100BaseTX Full-Duplex. No Auto-Negotiation.
100 BaseTX Half & Full-Duplex Advertised
via Auto-Negotiation.
10 BaseT Half & Full-Duplex Advertised
via Auto-Negotiation.
Isolated MII and TXP/TXM
All Capable Auto-Negotiation Enabled
Table 1. Mode Selection
17
Bit [8,10,12,16]
0
1
0
1
Register 0h
*
*
*
*
0
0
1
0
0
0
0
0
1
1
0
1
0
0
0
0
1
0
1
0
1
1
0
0
Default Register Bit Values
1
1
0
0
0
1
1
Register 4h
Bit [5,6,7,8]
0
0
1
0
0
0
1
1
0 0
0
0
1
1
1
0
1
0
0
0
0
1
1
0
1
Register 1fh
Bit 5
0
0
0
0
0
0
1
0
KS8737
Micrel