User's Manual

Cambricon Technologies, MLU270-S Series Intelligent Processing Card User Manual
Table 3 SMBUS Registers Reading
Direction
Bits
Content
M S
1
START
M S
8
SLAVE ADDRESS(Write)
S
M
1
ACK
M
S
8
REGISTER ADDRESS
S M
1
ACK
M S
1
RE START
M S
8
SLAVE ADDRESS(Read)
S M
1
ACK
S
M
8
DATA[7:0]
M
S
1
ACK
S M
8
DATA[15:8]
M S
1
ACK
S M
8
DATA[23:16]
M S
1
ACK
S
M
8
DATA[31:24]
M
S
1
NACK
M S
1
STOP
Table 4 SMBUS Registers Description
Registers
Address
ACCESS
Description
Total Card Power
0x01
RO
Card Power consumption, Float Data, Unit W
Card Temperature
0x02
RO
Card Temperature, Float Data, Unit
Chip Temperature
0x03
RO
Chip Temperature, Float Data, Unit
Power Brake
0x05
WO
The main frequency is reduced to 25% of current
frequency when write 0x04,and restore to pre-frequency
when write 0x01
PCIE Vendor ID and
Device ID
0xA0
RO
[15:0] Vendor ID :0xCABC
[31:16] Device ID:0x0270
PCIE Sub-Vendor ID
and Sub-System ID
0xA1
RO
[15:0] Sub-Vendor ID:0xCABC
[31:16] Sub-System ID,for example 0x0012
Device Name
0xF0
RO
Display device type,e.g 0X12 means device type is S4
Vendor Name
0xF1
RO
Display vendor name
Hardware Revision
0xF2
RO
Display hardware revision
Firmware Revision
0xF3
RO
Display Firmware Revisione.g 0x02120016 means the
main chip version is 0x02,device type is 0x12,main
version is 0x00,subversion is 0x1,patch number is 0x6
Manufacturing Time
0xF4
RO
Dispaly manufacturing time,e.g 0x1811 means
manufactured in 2018.11
Device ID
0xF5
RO
Display Device ID,e.g 0x20023 means device id is
20023