QT2022/32 - Data Sheet: DS3051
Figure 36: EEPROM Register Configuration and DOM Upload Sequence After Reset
hardware or software reset
QT2032/QT2022 registers reset
DOM update rate set to single update
NVR update queued, NVR command in progress state set
EEPROM_SCL=1, EEPROM_SDA=Z
MDIO reset registers cleared
Send 9 STOP conditions on I2C
wait 250 msec
stop NVR
1.8000h.3:2=11
command failed
upload NVR registers
command successful
1.8000h.3:2=01
No
1.80CFh.1=1 and
1.80CFh.4:2 valid?
Yes
Set
command failed
Upload eeprom0 to configure
MDIO registers
1.C005.3:2=11
command successful
Set 1.C005h.3:2=01
No
1.80CFh.1=1 and
1.80CFh.7:5 valid?
Yes
Upload eeprom1 to configure
MDIO registers
Set
command failed
1.C005h.5:4=11
command successful
Set 1.C005h.5:4 After=01
DOM not present
DOM idle
1.807Ah.6=1?
DOM present
enable DOM circuitry
command failed
stop
1.A100h.3:2=11
upload DOM registers
command successful
Set 1.A100h.3:2=01
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