ISL68201 Datasheet, PDF (23/32 Pages) Intersil Corporation – Single-Phase R4 Digital Hybrid PWM Controller

ISL68201
1. Send Byte Protocol
1
7+1
1
8
1
S Slave Address_0 A Command Code A
8
PEC
11
AP
Optional 9 Bits for SMBus/PMBus
NOT used in I²C
Example command: 03h Clear Faults
(This will clear all of the bits in Status Byte for the selected Rail)
S: Start Condition
A: Acknowledge (“0”)
N: Not Acknowledge (“1”)
W: Write (“0”)
RS: Repeated Start Condition
R: Read (“1”)
PEC: Packet Error Checking
P: Stop Condition
Acknowledge or DATA from Slave,
ISL68201
2. Write Byte/Word Protocol
1
7+1
1
8
1
S Slave Address_0 A Command Code A
8
Low Data Byte
Not Used for One Byte Word
1
8
1
A
High Data Byte A
8
PEC
11
AP
Example command: D0h ENABLE_PFM (one word, High Data Byte and ACK are not used)
Optional 9 Bits for SMBus/PMBus
NOT used in I²C
3. Read Byte/Word Protocol
1
7+1
1
8
1
S Slave Address_0 A Command Code A
Not Used for One Byte Word Read
1
7+1
1
8
1
8
1
RS Slave Address_1 A
Low Data Byte
A
High Data Byte
A
8
PEC
11
NP
Example command: 8B READ_VOUT (Two words, read voltage of the selected rail).
Optional 9 Bits for SMBus/PMBus
NOT used in I²C
NOTE: That all Writable commands are read with one byte word protocol.
STOP (P) bit is NOT allowed before the repeated START condition when “reading” contents of a register.
4. Block Write Protocol
1
7+1
1
8
1
8
1
8
1
8
1
S Slave Address_0 A Command Code A _{Byte Count = N A Lowest Data Byte A}
Data Byte 2
A
1
8
1
A
Data Byte N
A
8
PEC
11
AP
Optional 9 Bits for SMBus/PMBus
NOT used in I²C
Example command: ADh IC_DEVICE_ID (2 Data Byte)
FIGURE 23. SMBus/PMBus/I²C COMMAND PROTOCOL
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FN8696.1
March 7, 2016