ADLINK aTCA-N700 - Manual (Page 17)

aTCA-RN710 User's Guide
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Table 4-1 I2C Devices
Device I2C
Address Description
MUX(SFP)_0 0x70 MUX for SFP 0~3
MUX(SFP)_1 0x71 MUX for SFP 4~7
MUX(SFP)_2 0x72 MUX for SFP 8~11
MUX(Retimer) 0x73 MUX for 0~5ch and six retimers
SFP module 0x50
0x51 SFP register access address for info saving
SFP register access address for user data saving
Retimer(GN2405) 0x16 MUX setting is required to access.
I2C to I/O(Insert) 0x20 Insert interrupt processing device
I2C to I/O(LOS) 0x21 LOS(Lost Of Signal) interrupt processing device
I2C to I/O(Fault) 0x22 Tx Fault interrupt processing device
The I2C devices are accessible by the Uboot bootloader I2C commands on the front blade, which are
described in the following sections.
4.3.1 I2C Mux Access
To check the I2C Mux addresses select I2C bus 1 and check the MUX addresses at the Uboot prompt.
=> i2c dev 1
=> i2c probe
4.3.2 SFP Module Access
To check the SFP module status enable the corresponding MUX and check SFP eeprom info as the
following.
=> i2c dev 1
=> i2c probe
/* Reset MUX(0x70) to 0 and enable and check SFP address */
=> i2c mw 0x70 0x0 0x0; i2c mw 0x71 0x0 0x0; i2c mw 0x72 0x0 0x0
=> i2c mw 0x70 0x0 0x1; i2c probe
=> i2c mw 0x70 0x0 0x2; i2c probe
=> i2c mw 0x70 0x0 0x4; i2c probe
=> i2c mw 0x70 0x0 0x8; i2c probe
=> i2c mw 0x70 0x0 0x0
/* Reset MUX(0x71) to 0 and enable and check SFP address */
=> i2c mw 0x70 0x0 0x0; i2c mw 0x71 0x0 0x0; i2c mw 0x72 0x0 0x0
=> i2c mw 0x71 0x0 0x1; i2c probe
=> i2c mw 0x71 0x0 0x2; i2c probe
=> i2c mw 0x71 0x0 0x4; i2c probe
=> i2c mw 0x71 0x0 0x8; i2c probe
=> i2c mw 0x71 0x0 0x0