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參數(shù)資料
型號： TPS65820RSHTG4
廠商： TEXAS INSTRUMENTS INC
元件分類： 電源管理
英文描述： 8-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC56
封裝： 7 X 7 MM, GREEN, PLASTIC, QFN-56
文件頁數(shù)： 79/98頁
文件大小： 2290K
代理商： TPS65820RSHTG4
White LED, PWM Drivers — I
2C Registers
SLVS663B – MAY 2006 – REVISED APRIL 2008 .............................................................................................................................................................. www.ti.com
The I2C registers that control LED AND PWM driver related functions are shown below. The HEX address for
each register is shown by the register name, together with the R or W functionality for the register bits. Shaded
values indicate default initial power-up values. In the equations replace Bn with 1 for HI state, and 0 for LO state.
B7
B6
B5
B4
B3
B2
B1
B0
SM3_SET, ADDRESS=16, ALL BITS R/W
Bit Name
SM3_I7 set
SM3_I6 set
SM3_I5 set
SM3_I4 set
SM3_I3 set
SM3_I2 set
SM3_I1 set
SM3_I0 set
Function
SM3 DUTY CYCLE CONTROL
Value
See Table 13 for SM3 duty cycle settings, default = 0 (OFF)
RGB_FLASH, ADDRESS= 17, ALL BITS R/W
Bit Name
FLASH_EN
FLASH_ON2
FLASH_ON1
FLASH_ON0
FLASH_PER3
FLASH_PER2
FLASH_PER1
FLASH_PER0
Function
FLASH MODE
FLASH MODE ON TIME
FLASH MODE PERIOD
ON/OFF CTRL
When 0
OFF
See Table 14 for RGB ON TIME settings, default =
See Table 14 for RGB FLASH settings, default = 1
0.1
When 1
ON
RGB_RED, ADDRESS=18, ALL BITS R/W
Bit Name
RGB_ISET1
RGB_ISET0
PHASE
PWMR_D4
PWMR_D3
PWMR_D2
PWMR_D1
PWMR_D0
Function
RGB LED CURRENT SETTINGS
PHASE
REG DRIVER DUTY CYCLE CONTROL
CONTROL
When 0
00 = 0
10 = 8 mA
GREEN out of
See Table 14 for RGB_RED DUTY settings, default = 0
01 = 4 mA
11 = 12 mA
Φ with RED
and BLUE
When 1
BLUE out of
Φ
with RED and
GREEN
RGB_GREEN, ADDRESS=19, ALL BITS R/W
Bit Name
NOT USED
PWMG_D4
PWMG_D3
PWMG_D2
PWMG_D1
PWMG_D0
Function
NOT USED
GREEN DRIVER DUTY CYCLE CONTROL
Value
NOT USED
See Table 14 for RGB_GREEN DUTY settings, default = 0
RGB_BLUE, ADDRESS=1A, ALL BITS R/W
Bit Name
NOT USED
PWMB_D4
PWMB_D3
PWMB_D2
PWMB_D1
PWMB_D0
Function
NOT USED
BLUE DRIVER DUTY CYCLE CONTROL
Value
NOT USED
See Table 14 for RGB_BLUE DUTY settings, default = 0
PWM, ADDRESS=1D, ALL BITS R/W
Bit Name
PWM_EN
PWM1_F2
PWM_F1
PWM_F0
PWM_D3
PWM_D2
PWM_D1
PWM_D0
Function
PWM ON/OFF
PWM DRIVER FREQUENCY SETTINGS
PWM DRIVER DUTY CYCLE SETTINGS
CONTROL
When 0
Disabled
000 = 15.6 kHz
011 = 3 kHz
110 = 1 kHz
See Table 15 for PWM DUTY settings, default = 0.0625
001 = 7.8 kHz
100 = 2 kHz
111 = 500 Hz
When 1
Enabled
010 = 4.5 kHz
101 = 1.5 kHz
Default = 15.6
kHz
LED_PWM, ADDRESS=27, ALL BITS R/W
Bit Name
LPWM_7 set
LPWM_6 set
LPWM_5 set
LPWM_4 set
LPWM_3 set
LPWM_2 set
LPWM_1 set
LPWM_0 set
Function
LED_PWM DRIVER DUTY CYCLE CONTROL
Value
See Table 13 for LED_PWM DUTY settings, default = 0 (OFF)
80
Copyright 2006–2008, Texas Instruments Incorporated
Product Folder Link(s): TPS65820
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