ISL68137_16 Datasheet, PDF (22/53 Pages) Intersil Corporation – Digital Dual Output, 7-Phase Configurable PWM

ISL68137
PMBus Operation
The ISL68137 PMBus slave address is pin selectable utilizing the
SA pin and resistor value described in Table 2 on page 13. For
proper operation, users should follow the PMBus protocol, as
shown in “PMBus Protocol” on page 23. The supported PMBus
addresses are in 8-bit format (including write and read bit):
80-8E, A0-AE, B0-BE and C0-CE. The least significant bit of the
8-bit address is for write (0h) and read (1h). PMBus commands
are in the range from 0x00h to 0xFFh. For the ISL68137, Page 0
corresponds to Output 0 and Page 1 to Output 1. For reference
purposes, the 7-bit format addresses are also summarized in
Table 5.
TABLE 5. PMBus 8-BIT AND 7-BIT FORMAT ADDRESS (HEX)
8-BIT 7-BIT 8-BIT 7-BIT 8-BIT 7-BIT 8-BIT 7-BIT
80/81 40 A0/A1 50 B0/B1 58 C0/C1 60
82/83 41 A2/A3 51 B2/B3 59 C2/C3 61
88/89 44 A8/A9 54 B8/B9 5C C8/C9 64
8A/8B 45 AA/AB 55 BA/BB 5D CA/CB 65
The PMBus data formats follow PMBus Specification version 1.3
and SMBus version 2.0.
Basic PMBus telemetry commands are summarized in “PMBus
Command Summary” on page 24.
3.3V
VCC
1.2V
VCCS
Fac
Config
LOAD
PLL
LOCKED
Tel ADC Customer Start-up
Initialized Config Diagnostics
DONE LOAD DONE
PROGRAM
(BT, TMAX,
CONFIGURATION
PS, DE, etc.)
USE PREVIOUS PROGRAMMED
CONFIGURATION FOR START-UP AND OPERATION
VCCS
PROGRAM CONFIGURATION
(BT, TMAX, PS, DE, etc.)
PROGRAM CONFIGURATION
(BT, TMAX, PS, DE, etc.)
POR
ENABLE
~30ms
INDEFINITELY
PMBus
COMMAND
PMBus
COMMAND
PMBus
COMMAND
PMBus
COMMAND
V_OUT
FIGURE 27. SIMPLIFIED PMBus INITIALIZATION TIMING DIAGRAM
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September 27, 2016