EPC635 datasheet(93/97 Pages) EPC

93 / 97 page

8.7.23. DLL_filter_control

DLL_filter_control

0xDF

Bit No.

Bit name

reserved

dll_filter_ctrl_s2_sel

reserved

dll_filter_ctrl_s1_sel

Operation

Default

0x00

dll_filter_ctrl_s2_sel:

Weighted averaging DLL match values between DCS frames. This filter can be programmed to run at

every 2, 4, 8, … 128 DCS frame, depending on the weight selected using this register. Once the DLL is

disabled, the average values are overriding the manual control.

000: disable

001: weight 1/2

010: weight 1/4

011: weight 1/8

100: weight 1/16

101: weight 1/32

110: weight 1/64

111: weight 1/128

dll_filter_ctrl_s1_sel:

Weighted averaging DLL match values during synchronization for one DCS frame. This filter can be pro-

grammed to run at every 8, 16, 32, … 512 LED pulse (i.e. runs at modulation clock frequency), depending

on the weight selected using this register. Once the DLL is disabled, the average values are overriding the

manual control.

000: disable

001: weight 1/8

010: weight 1/16

011: weight 1/32

100: weight 1/64

101: weight 1/128

110: weight 1/256

111: weight 1/512

Note:

When DLL_control.dll_ctrl_ext = 1, dll_filter_ctrl_s1_sel and dll_filter_ctrl_s2_sel functions are suppressed.

8.7.24. Temp_

Temp_tl_cal1

Temperature sensor calibration

0xE8

Bit No.

Bit name

Temp_tl_cal1[7:0]

Operation

Temp_tl_cal1:

Temperature offset correction for calculation according the formula in chapter 5.8 by the application SW.

Range approx. -27 … +27ºC with around 0.2ºC steps. The reference temperature is +27ºC.

0x7F (127) corresponds to 0ºC offset. 0xFF means not calibrated.

Temp_tl_cal2

Temperature sensor calibration

0xE9

Bit No.

Bit name

Temp_tl_cal2[7:0]

Operation

Temp_tl_cal2:

Temperature slope correction for calculation according the formula in chapter 5.8 by the application SW.

0.01LSB/ºC. 0x7F (127) corresponds to 0LSB/ºC. 0xFF means not calibrated.

8.7.25. User_

User_1

User register 1 for user data

0xF0

Operation

Default

0x00

Characteristics subject to change without notice

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Datasheet_epc635-V1.02

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