Specifications

MiTOP-E1/T1 Ver. 1.0 2-Wire Serial Link C-1
Appendix C
I2C Interface Management
This chapter provides references for using the I2C interface and associated
commands.
C.1 2-Wire Serial Link
MiTOP-E1/T1 complies with the MSA standard and has the same 2-wire serial link
interface (I
2
C) that carries the out-of-band protocol. The device follows the basic
parameter map as outlined by the MSA (based on SFF 8472).
Figure C-1
illustrates the mapping of page A0 as seen by the host equipment.
The MiTOP-E1/T1 identification parameters reside on page A0.
Figure C-1. Page A0 Mapping
The first sector contains addresses 0x00-0x5F that are reserved for identification
parameters.
The second sector contains addresses 0x60 to 0x7E that are reserved for vendor
specifics.
MiTOP-E1/T1 uses sixteen locations in the third sector (addresses 0x80 and up)
for configuration, diagnostic, and status monitoring parameters.
MiTOP-E1/T1 processes two message formats:
• Two wire serial link message. Used in standard I
2
C to read the ID table
parameters.
• Management message. The host sends information to MiTOP-E1/T1,
encapsulated in the I
2
C message for managing, configuring, and monitoring
MiTOP-E1/T1.
Addresses and values are provided in hexadecimal format.