參數(shù)資料
型號(hào)： TPS2481PW
廠商： TEXAS INSTRUMENTS INC
元件分類(lèi)： 電源管理
英文描述： POWER SUPPLY SUPPORT CKT, PDSO20
封裝： GREEN, PLASTIC, TSSOP-20
文件頁(yè)數(shù)： 39/56頁(yè)
文件大?。?/td> 1381K
代理商： TPS2481PW
SLUS939B – APRIL 2010 – REVISED DECEMBER 2010
www.ti.com
REGISTER INFORMATION
The TPS2480/81 uses a bank of registers for holding configuration settings, measurement results,
maximum/minimum limits, and status information. Table 4 summarizes the TPS2480/81 registers; illustrates
registers.
Register contents are updated 4 ms after completion of the write command. Therefore, a 4-ms delay is required
between completion of a write to a given register and a subsequent read of that register (without changing the
pointer) when using SCL frequencies in excess of 1 MHz.
Table 4. Summary of Register Set
POINTER
POWER-ON RESET
ADDRESS
REGISTER NAME
FUNCTION
TYPE(1)
HEX
BINARY
HEX
All-register reset, settings for bus
00
Configuration Register
voltage range, PGA Gain, ADC
00111001 10011111
399F
R/W
resolution/averaging.
01
Shunt Voltage
Shunt voltage measurement data.
Shunt voltage
—
R
02
Bus Voltage
Bus voltage measurement data.
Bus voltage
—
R
03
Power(2)
Power measurement data.
00000000 00000000
0000
R
Contains the value of the current flowing
04
Current(2)
00000000 00000000
0000
R
through the shunt resistor.
Sets full-scale range and LSB of current
05
Calibration
and power measurements. Overall
00000000 00000000
0000
R/W
system calibration.
(1)
Type: R = Read-Only, R/W = Read/Write.
(2)
The Power Register and Current Register default to '0' because the Calibration Register defaults to '0', yielding a zero current value until
the Calibration Register is programmed.
44
Copyright 2010, Texas Instruments Incorporated
Product Folder Link(s): TPS2480 TPS2481
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