IDT Installation of the EB-LOGAN-23 Evaluation Board
89EB-LOGAN-23 Evaluation Board
2 - 12
February 16, 2011
Notes
SMBus Interfaces
The System Management Bus (SMBus) is a two-wire interface through which various system compo-
nent chips can communicate. It is based on the principles of operation of I
2
C. Implementation of the SMBus
signals in the PCI Express connector is optional and may not be present on the host system. The SMBus
interface consists of an SMBus clock pin and an SMBus data pin.
The PES32NT24AG2 contains two SMBus interfaces: a slave SMBus interface and a master SMBus
interface. The slave SMBus interface allows a SMBus Master device full access to all software-visible regis-
ters. The Master SMBus interface provides a connection to the external serial EEPROM used for initializa-
tion and the I/O expanders used for hot-plug signals.
SMBus Slave Interface
On the PES32NT24AG2 board, the slave SMBus interface is accessible through a 4-pin header as
Location
Signal
Default
S5[1]
SWMODE[0]
ON
S5[2]
SWMODE[1]
ON
S5[3]
SWMODE[2]
ON
S5[4]
SWMODE[3]
ON
SW8[1]
STK2CFG[0]
OFF
SW8[2]
STK2CFG[1]
ON
SW8[3]
STK2CFG[2]
ON
SW8[4]
STK2CFG[3]
ON
SW8[5]
STK2CFG[4]
ON
SW8[6]
STK1CFG[0]
OFF
SW8[7]
STK1CFG[1]
ON
SW9[1]
STK3CFG[0]
OFF
SW9[2]
STK3CFG[1]
ON
SW9[3]
STK3CFG[2]
ON
SW9[4]
STK3CFG[3]
ON
SW9[5]
STK3CFG[4]
ON
SW9[6]
STK0CFG[0]
OFF
SW9[7]
STK0CFG[1]
ON
SW10[2]
GCLKFSEL
ON
SW10[4]
RSTHALT
ON
SW10[5]
SSMBADDR[2]
OFF
SW10[6]
SSMBADDR[1]
OFF
SW10[7]
CLKMODE[1]
OFF
SW10[8]
CLKMODE[0]
OFF
Table 2.13 Boot Configuration Vector Switches S8 - S11
Summary of Contents for EB-LOGAN-23
Page 4: ...IDT Table of Contents EB LOGAN 23 Evaluation Board ii February 16 2011 Notes ...
Page 6: ...IDT List of Figures EB LOGAN 23 Evaluation Board iv February 16 2011 Notes ...
Page 8: ...IDT List of Tables VB64H16AG2 Validation Board Manual vi February 16 2011 Notes ...
Page 40: ...IDT Software For EB LOGAN 23 89EB LOGAN 23 Evaluation Board 3 2 February 16 2011 Notes ...
Page 41: ...Notes EB LOGAN 23 Evaluation Board 4 1 February 16 2011 Chapter 4 Schematics Schematics ...
