L99LDLH32 datasheet(47/142 Pages) STMICROELECTRONICS

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L99LDLH32 数据表(PDF) 47 Page - STMicroelectronics

部件名	L99LDLH32

功能描述	32-channel LED driver with automotive CAN FD Light interface

PDF	142 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

标志

47 / 142 page

DS12879 Rev 6

47/142

L99LDLH32

Communication interface

141

Figure 18. Broadcast message flow

6.5.2

Broadcast frame for current setting and PWM duty cycle setting

As shown in Figure 19, a broadcast frame uses the ID starting with ‘1’ followed by three ‘1’s

and the chain number. Bit 6 “CUR” defines whether the data contains PWM duty cycle data

(0) or current setting data (1). The six-bit chain number allows the assignment of 64 chains

with up to four Responders consisting of 16-channel entities each.

Figure 19. Broadcast frame

CUR = 0: Duty cycle update

CUR = 1: Current setting update

CUR

Chain ID [5:0]

1111

CTRL

Position 00_Data_Ch0-15 Position 01_Data_Ch0-15 Position 10_Data_Ch0-15 Position 11_Data_Ch0-15

ACK/EOF

CRC

16x8 bit

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