EVB9311 SMSC, EVB9311 Datasheet - Page 138

• Manufacturer Part Number: EVB9311
• Description: EVALUATION BOARD LAN9311-NU
• Manufacturer: SMSC
• Series: 0133r

Specifications of EVB9311

• Main Purpose: Interface, Ethernet
• Embedded: No
• Utilized Ic / Part: LAN9311
• Primary Attributes: 2 Ports, 100BASE-TX/10BASE-T, Managed
• Secondary Attributes: 2 PHYs with HP Auto-MDIX, Auto- Flow Control, 32-bit CRC, MDI/MDI-X
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 638-1076

Chapter 10 Serial Management
Revision 1.7 (06-29-10)
10.1
10.2
eeprom_type_strap
eeprom_type_strap
TYPE/MODE
I
EEPROM
2
EEPROM
Microwire
EEPROM
C Master
Master
Mode
Mode
= 1
= 0
This chapter details the LAN9311/LAN9311i serial management functionality of the I
EEPROM Controller and the supporting EEPROM Loader.
The I
external EEPROM with the system register bus and the EEPROM Loader. Multiple types
(I
and size are accomplished via the eeprom_type_strap and eeprom_size_strap[1:0] configuration straps
respectively. Various commands are supported for each EEPROM type, allowing for the storage and
retrieval of static data. The I
The EEPROM Loader provides the automatic loading of configuration settings from the EEPROM into
the LAN9311/LAN9311i at reset. The EEPROM Loader module interfaces to the EEPROM Controller,
Ethernet PHYs, and the system CSRs.
Based on the configuration strap eeprom_type_strap, the I
either Microwire or I
and characteristics differ dependant on the selected EEPROM type as summarized in
Note: When the EEPROM Loader is running, it has exclusive use of the I
Functional Overview
I
2
2
C/Microwire) and sizes of external EEPROMs are supported. Configuration of the EEPROM type
C/Microwire Master EEPROM Controller
Table 10.1 I
2
EE_SDA
Input enabled
(to I
Open-drain output
(from I
Pull-down disabled
EEDI
Input enabled
(to Microwire master)
Output disabled
Pull-down enabled
C/Microwire EEPROM controller is an I
EE_SDA/EEDI PIN
controller. Refer to
2
C master)
2
C master)
2
C/Microwire Master Serial Management Pins Characteristics
2
C compatible EEPROMs. The I
Section 10.2.4, "EEPROM Loader"
2
C interface conforms to the Philips I
NOT USED
Input enabled
(used for straps)
Output enabled
(driven low)
EEDO
Input enabled
(used for straps)
Output enabled (from
Microwire master)
DATASHEET
EEDO PIN
138
Two Port 10/100 Managed Ethernet Switch with 16-Bit Non-PCI CPU Interface
2
C/Microwire master module which interfaces an optional
2
C/Microwire serial management pins functionality
NOT USED
Input enabled
(used for straps)
Output enabled
(driven low)
EECS
Input enabled
(used for straps)
Output enabled (from
Microwire master)
2
EECS PIN
C/Microwire EEPROM controller supports
for more information.
2
C-Bus Specification .
SMSC LAN9311/LAN9311i
2
EE_SCL/EECLK PIN
EE_SCL
Input enabled
(to I
used for straps)
Open-drain output
(from I
EECLK
Input enabled
(used for straps)
Output enabled (from
Microwire master)
C/Microwire EEPROM
2
C master and
2
C master)
Table
2
C/Microwire
Datasheet
10.1.