LED1642GW datasheet(25/42 Pages) STMICROELECTRONICS

部件名	LED1642GW

功能描述	16 channel LED driver with error detection current gain control

PDF	42 Pages

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制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

标志

25 / 42 page

DocID024395 Rev 6

25/42

LED1642GW

Configuration register

8.6

SDO delay (CFG-13)

Usually in SDO terminal, data are shifted out the rising edge of CLK signal (with a

propagation delay of about 15 ns - signal (a) in Figure 21). The device has the possibility to

shift data out the falling edge of the CLK signal (with few ns of propagation delay - signal (b)

in Figure 21). This feature is active when CFG -13 bit of the configuration register is "1".

Default setting for this bit is "0" hence the SDO delay is not activated by default. This feature

is particularly useful when some devices are connected in daisy chain configuration with

mismatched propagation delays, between CLK and SDO data path (board routing).

Figure 17. Output TON (current rise time) CFG -

12 = CFG - 11 = 0

Figure 18. Output TOFF (current fall time) CFG -

2 = CFG - 11 = 0

AM13698V1

AM13699V1

Figure 19. Output TON (current rise time) CFG -

12 = CFG - 11 = 1

Figure 20. Output TOFF (current fall time) CFG -

12 = CFG - 11 = 1

AM13700V1

AM13701V1

LED1642GW 数据表(PDF) 25 Page - STMicroelectronics