ISL68134_16 Datasheet, PDF (20/50 Pages) Intersil Corporation – Digital Dual Output, 7-Phase Configurable PWM

ISL68134
PMBus™ Operation
The ISL68134 PMBus slave address is pin selectable utilizing the
ADDRESS pin and resistor value described in Table 3 on page 16.
For proper operation, users should follow the PMBus protocol, as
shown in “PMBus Protocol” on page 21. 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 ISL68134, 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
84/85 42 A4/A5 52 B4/B5 5A C0/C1 60
86/87 43 A6/A7 53 B6/B7 5B C6/C7 63
8C/8D 46 AC/AD 56 BC/BD 5E CC/CD 66
8E/8F 47 AE/AF 57 BE/BF 5F CE/CF 67
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 22.
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 STARTUP AND OPERATION
PROGRAM CONFIGURATION PROGRAM CONFIGURATION
VCCS
(BT, TMAX, PS, DE, etc.)
(BT, TMAX, PS, DE, etc.)
POR
ENABLE
~30ms
INDEFINITELY
PMBus
COMMAND
PMBus
COMMAND
PMBus
COMMAND
PMBus
COMMAND
V_OUT
FIGURE 26. SIMPLIFIED PMBus INITIALIZATION TIMING DIAGRAM
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FN8817.0
September 28, 2016