ISM6636A&B_Rev1.10解密.pdf - 第24页
24 Innovision Semiconductor Preliminary Datas heet ISM6636 A/B Rev1.10 01/2023 Register = 0x0A Product ID (Product_ID) Used to identify t he module ID info rmation, read fixed 0x36, take the m antissa 36 of the ISM6636. …
23
Innovision Semiconductor
Preliminary Datasheet
ISM6636A/B
Rev1.10 01/2023
ISM6636X register function description
The ISM6636X module integrates the standard I2C protocol, which supports various read
and write operations through the I2C protocol. The user-programmable operations are as
follows:
Monitoring function
The user can read the module information through the I2C protocol as follows:
• Product ID (Part Number)
• Silicon revision
• Input voltage (PVIN)
• Output voltage (Vout)
• Output current (Iout)
• Module temperature (Temp)
• The current working state of the module (Power Good)
• Module abnormal fault indication (limited to OV, OC, OT)
Setting function
The user can set the function of the module through the I2C protocol as follows:
• Ramp Compensation (Ramp)
• Output voltage (Vout)
• Soft start time (Soft start)
• Over Current Protection (OC), Over Voltage Protection (OV), Fault Indication
Threshold (Ppwer Good), Over Temperature Protection (OT)
• Soft shutdown enable (Soft stop)
• Forced continuous conduction mode and discontinuous conduction mode (FCCM
and DCM)
• I2C Enable and I2C Disable
• Behavior after overvoltage protection (OV_Response)
• Supports up to 3 register power-down saves (3 time program)
After ISM6636X is powered on, it will automatically load the default register value. The
register value is stored in an OTP (one time programmable) register. We will inform the user
of the factory default configuration register value (see chapter 5.2 for details). If the user
needs to reconfigure and modify the default registers during use, the I2C programming
instruction needs to be executed. The I2C programming instruction can load the currently
configured I2C register value into the OTP register. If the programming operation is not
performed, the configured register values will be cleared after the module is powered
off (the OTP data will be automatically loaded after the module is started). ISM6636X
supports up to 3 I2C register programming instructions.
24
Innovision Semiconductor
Preliminary Datasheet
ISM6636A/B
Rev1.10 01/2023
Register = 0x0A Product ID (Product_ID)
Used to identify the module ID information, read fixed 0x36, take the mantissa 36 of the
ISM6636.
Table 9 Register = 0x0A
Register = 0x0B Module version (IC_Version)
Used to identify the module version information, and upgrade according to the module
version.
Table 10 Register = 0x0B
Register = 0x0C PVIN voltage report (PVIN_Report)
When the VIN pin of the module is working normally, the PVIN voltage can be read through
the I2C protocol, the reading range is 0~16V, LSB=0.0625V.
Example 1: When the read I2C value is 0x00, it means that the current PVIN voltage is 0V.
Example 2: When the read I2C value is 0xC0, it means that the current PVIN voltage is 12V.
The PVIN voltage reporting function supports up to 16V input voltage, when the voltage
exceeds 16V, the register will display the maximum value 0xFF.
Command
PVIN_Report
Format
unsigned binary
Bit
7
6
5
4
3
2
1
0
Access
R
R
R
R
R
R
R
R
Function
PVIN Range: 0->16V, LSB=0.0625V
Default
0
0
0
0
0
0
0
0
Table 11 Register = 0x0C
Command
Product_ID
Format
unsigned binary
Bit
7
6
5
4
3
2
1
0
Access
R
R
R
R
R
R
R
R
Function
Device identification
Default
0
0
1
1
0
1
1
0
Command
IC_Version
Format
unsigned binary
Bit
7
6
5
4
3
2
1
0
Access
R
R
R
R
R
R
R
R
Function
Silicon version
Default
0
0
0
0
0
0
0
1
25
Innovision Semiconductor
Preliminary Datasheet
ISM6636A/B
Rev1.10 01/2023
Register = 0x0D Output Voltage Report (Vout_Report)
When the VIN pin is working normally, the output voltage information can be read through
the I2C protocol. The output voltage of this register is related to the mantissa X of the read
range of ISM6636X.
When the part number is ISM6636A or ISM6636B, the output voltage reading range is
0.8~5.7V, LSB=20mV. The formula is as follows:
Vout =
V
Example (ISM6636B): When the read I2C value is 0x8C.
Vout =
V
Command
Vout_Report
Format
unsigned binary
Bit
7
6
5
4
3
2
1
0
Access
R
R
R
R
R
R
R
R
Function
ISM6636A\B Range:0.8V-->5.7V, 20mV resolution.
Default
0
0
0
0
0
0
0
0
Table 12 Register = 0x0D
Register = 0x0E Output current report (Iout_Report)
When the VIN pin is working normally, the output current information can be read through
the I2C protocol. The current can be read in the range of 0A~8.2A, LSB=40mA. There is a
constant offset in reading current information, and the calculation formula can be referred to
as follows:
.
Example: When the read I2C value is 0x72, 0x72=Dec(114)=114*0.04-2.5=2.06A. It means
the current output current is 2.06A.
When the read current exceeds 8.2A, the data fed back by the I2C is either the maximum
value. The output current information is for reference only. It is recommended that the user
read the current range as 0~6A. For accurate current information, also measure with an
external measuring instrument.
Command
Iout_Report
Format
unsigned binary
Bit
7
6
5
4
3
2
1
0
Access
R
R
R
R
R
R
R
R
Function
Iout Range: 0A-->8.2A, LSB= 40mA
Default
0
0
0
0
0
0
0
0
Table 13 Register = 0x0E