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L99LDLH32 数据表(PDF) 28 Page - STMicroelectronics

部件名 L99LDLH32
功能描述  32-channel LED driver with automotive CAN FD Light interface
PDF  142 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

L99LDLH32 数据表(HTML) 28 Page - STMicroelectronics

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Functional description
L99LDLH32
28/142
DS12879 Rev 6
Figure 8. PWM concept for DIN function group
The PWM frequency and phase relation of several devices can be synchronized versus
each other through the SYNC_I/O pin. There is one dedicated bit (SYNC I/O_M/S - see
FTP/RAM memory map, Chapter 7) to configure the device in Provider [1] or Consumer [0]
mode.
In Provider mode, the Clock frequency with scaler and phase signal is transferred to the
SYNC_I/O line. In Consumer mode, clock frequency and phase signal on the SYNC_I/O line
are used to synchronize its own clock. Consequently the phase relation among several
DIN_EN= [0]?
Yes
Duty cycle
applied on
OUTx
(1) <=PWM_DUTY_CHx * PWM_DUTY_ALL
(2) <= PWM_FREQ_DIN
(3) <= duty applied
DIN timeout
reset
DIN timeout
&
DIN = [0]?
Duty cycle
applied on
OUTx
Yes
(1) <=PWM_DUTY_CHx * PWM_DUTY_ALL
(2) <= PWM_FREQ_DIN
(3) <= duty applied
No
No
DIN timeout
&
DIN = [1]?
Yes
Outx on
DIN timeout_not
&
DIN = [1]?
No
Outx on
No
DIN timeout_not
&
DIN = [0]
Outx off
DIN timeout: DIN = [0] > 10ms
DIN_EN = [1]
DIN
DIN timeout
Outx
32us
delay
DIN timeout
DIN
DIN timeout
Outx
32us
delay
DIN timeout
Yes
Bus Control
DIN Control
Bus Control
Duty cycle
applied on
OUTx
32us delay
(1) <=PWM_DUTY_CHx * PWM_DUTY_ALL
(2) <= PWM_FREQ_DIN
(3) <= duty applied
(1) <=don’t care
(2) <= don’t care
(3) <= 1 (100%)
(1) <=don’t care
(2) <= don’t care
(3) <= 1 (100%)
(1) <=don’t care
(2) <= don’t care
(3) <= 0 (0%)



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