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BD18378EFV-ME2 データシート(PDF) 8 Page - Rohm

部品番号 BD18378EFV-ME2
部品情報  Advanced 12 Channel Constant Current LED Driver IC
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メーカー  ROHM [Rohm]
ホームページ  http://www.rohm.com
Logo ROHM - Rohm

BD18378EFV-ME2 データシート(HTML) 8 Page - Rohm

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BD18378EFV-M
TSZ02201-0W1W0C500020-1-2
© 2015 ROHM Co., Ltd. All rights reserved.
www.rohm.co
m
TSZ22111・15・001
04. Dec. 2015 Rev.004
Command [READ_MASK_WLS] is used to read back data to ensure it was received correctly.
Command [WRITE_LOCK] is used to lock the important registers.
Command [WRITE_UNLOCK] is used to unlock the important registers.
Command [READ_UNLOCK] is used to read back the data to ensure it was received correctly.
Command [RESET_STATUS] can reset all bits in the STATUS register except for the REXT_FAULT_FLAG, based on
command parameters, and resets the PWM_OK register (see RESET_STATUS command description).
Command [READ_STATUS] is used to access all bits in the STATUS register.
Command [SOFTWARE_POR] resets the chip and sets all registers to default values. POR_FLAG is set HIGH.
Command [READ_PWM_OK] is used to read the PWM detection.
Command [READ_Gen_SHORT] is used to read the LED short detection.
Command [READ_Gen_OPEN] is used to read the LED open detection.
Command [READ_SHORT_TO_GND] is used to read the short to ground detection.
WRITE_PWM_MAP command & READ_PWM_MAP command:
Register Name
Address
Data Code<7:0>
Comments
PWM_MAPk
40 to 45
b7
b6
b5
b4
b3
b2
b1
b0
Assign CH2k+1 and CH2k to PWMx,
k=0 to 5
PWM_MAPk
80 to 85
b7
b6
b5
b4
b3
b2
b1
b0
Read CH2k+1 and CH2k to PWMx,
k=0 to 5
o
Code:
8bit CMD (for all channels)
Data<7:4>or<3:0>
PWM0
0000
PWM1
0001
PWM2
0010
PWM3
0011
PWM4
0100
PWM5
0101
PWM0
Default for invalid data
0110 to 1111
WRITE_CALx command & READ_CALx command (where x = 0 to 11):
Register Name
Address
Data Code<7:0>
Comments
CALx
48 to 53
x
x
b5
b4
b3
b2
b1
b0
Write calibration setting of CH0 to CH11
CALx
88 to 93
u
u
b5
b4
b3
b2
b1
b0
Read calibration setting of CH0 to CH11
o
Code:
1=enable Cal bit
0=disable Cal bit
x=don’t care
u=unchanged
WRITE_EN_CHANNEL command & READ_EN_CHANNEL command:
Register Name
Address
Data Code<7:0>
Comments
EN_CHANNEL
56
x
x
b5
b4
b3
b2
b1
b0
Enable Channel CH5 to CH0
EN_CHANNEL
57
x
x
b11 b10
b9
b8
b7
b6
Enable Channel CH11 to CH6
EN_CHANNEL
96
u
u
b5
b4
b3
b2
b1
b0
Read Enable Channel CH5 to CH0
EN_CHANNEL
97
u
u
b11 b10
b9
b8
b7
b6
Read Enable Channel CH11 to CH6
o
Code:
1=enable Channel
0=disable Channel
x=don’t care
u=unchanged


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