ZSPM2000 datasheet(26/42 Pages) IDT

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ZSPM2000 Datasheet

January 27, 2016

If only four devices are used in a system, their respective addresses can alternatively be configured without

resistors by connecting the pins to GND or AVDD18 pin. The PMBus™ addresses selectable in this fashion are

listed in Table 4.3.

Table 4.3

PMBus™ Address Selection without Resistors

Address

ADDR1

ADDR0

GND

AVDD18

GND

AVDD18

GND

4.4.

Configuration Registers

The registers described in Table 4.4 are used to configure the ZSPM2000 as explained in section 3.6. Registers

classified as OTP cannot be changed during run-time. Registers classified as PMBus™ can be changed during

run-time with PMBus™ commands.

Table 4.4

List of Supported PMBus™ Configuration Registers

Note: See important notes at the end of the table.

PMBus™ Parameter

Description

Data Format

Classification

Output Voltage

ON_OFF_CONFIG

On/off configuration

N/A

PMBus™

VOUT_MODE

Exponent of the VOUT_COMMAND value

N/A

Read only

VOUT_COMMAND

Set output voltage

LINEAR

(1)

PMBus™

VOUT_OV_FAULT_LIMIT

Over-voltage fault limit

N/A

OTP

VOUT_OV_FAULT_RESPONSE

Over-voltage fault response

N/A

OTP

VOUT_OV_WARN_LIMIT

Over-voltage warning level

N/A

OTP

VOUT_UV_WARN_LIMIT

Under-voltage warning level

N/A

OTP

VOUT_UV_FAULT_LIMIT

Under-voltage fault level

N/A

OTP

VOUT_UV_FAULT_RESPONSE

Under-voltage fault response

N/A

OTP

Output Current

IOUT_OC_FAULT_LIMIT

Over-current fault limit

N/A

OTP

IOUT_OC_FAULT_RESPONSE

Over-current fault response

N/A

OTP

IOUT_OC_LV_FAULT_LIMIT

Voltage threshold during constant-current

mode

N/A

OTP

IOUT_OC_WARN_LIMIT

Over-current warning level

N/A

OTP

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