CS1630 Datasheet, PDF (50/56 Pages) Cirrus Logic – 2-Channel TRIAC Dimmable LED Driver IC

CS1630/31
6.43 Configuration 62 (Config62) – Address 94
7
CH2_OFF2
6
CH2_OFF1
5
CH2_OFF0
4
CH1_OFF2
3
CH1_OFF1
2
CH1_OFF0
1
BST_LLP1
0
BST_LLP0
Number
Name
Description
[ 7:5]
Sets fixed offset delay for ZCD comparator and other path delays in order to
get correct T2 measurements for channel 2. Adjusting CH2_OFF[2:0] correctly
CH2_OFF[2:0]
is necessary to achieve accurate and predictable output currents across the
entire dimming range.The offset delay is given by:
CH2_OFF[2:0]  50ns
[ 4:2]
Sets fixed offset delay for ZCD comparator and other path delays in order to
get correct T2 measurements for channel 1. Adjusting CH1_OFF[2:0] correctly
CH1_OFF[2:0]
is necessary to achieve accurate and predictable output currents across the
entire dimming range. The offset delay is given by:
CH1_OFF[2:0]  50ns
[ 1:0 ]
BST_LLP[1:0]
Sets the minimum value V_LLPMin(th) by which the boost output voltage needs to
be below the AC line voltage to trigger an LLP fault.
00 = 80V for 120V applications; 160V for 230V applications
01 = 40V for 120V applications; 80V for 230V applications
10 = 20V for 120V applications; 40V for 230V applications
11 = 10V for 120V applications; 20V for 230V applications
6.44 CRC Tag (CRC_TAG) – Address 102
7
6
5
4
3
2
1
0
2⁷
2⁶
2⁵
2⁴
2³
2²
2¹
2⁰
CRC Tag register used by the communication system. To activate the use of this register the CRC bit must be
programmed to ‘1’ (see "Configuration 38 (Config38) – Address 70" on page 39). The correct CRC value is ob-
tained by computing the CRC for all the registers from address 0 through 95. This includes all the reserved set-
tings which have been factory programmed.
50
DS954F2