Datasheet
Data Sheet ADP8866
Rev. A | Page 43 of 52
Heartbeat Enable Selection (HB_SEL)—Register 0x2C
Table 76. HB_SEL Bit Map
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Reserved D9HB_EN D8HB_EN D7HB_EN D6HB_EN
Table 77.
Bit Name Bit No. Description
N/A [7:4] Reserved.
D9HB_EN 3 Diode 9 heartbeat enable.
1 = heartbeat for this channel is enabled (all HB registers apply to every even numbered pulse).
0 = heartbeat for this channel is disabled (all HB registers are ignored).
D8HB_EN 2 Diode 8 heartbeat enable.
1 = heartbeat for this channel is enabled (all HB registers apply to every even numbered pulse).
0 = heartbeat for this channel is disabled (all HB registers are ignored).
D7HB_EN 1 Diode 7 heartbeat enable.
1 = heartbeat for this channel is enabled (all HB registers apply to every even numbered pulse).
0 = heartbeat for this channel is disabled (all HB registers are ignored).
D6HB_EN 0 Diode 6 heartbeat enable.
1 = heartbeat for this channel is enabled (all HB registers apply to every even numbered pulse).
0 = heartbeat for this channel is disabled (all HB registers are ignored).
Independent Sink Current LED6—Even Heartbeat Pulses (ISC6_HB)—Register 0x2D
Table 78. ISC6_HB Bit Map
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Reserved SCD6_HB
Table 79.
Bit Name
Bit No.
Description
N/A 7 Reserved.
SCD6_HB [6:0]
Sink current for the even numbered pulses when heartbeat mode for this channel is enabled. Use the following DAC code schedule.
See Table 39 for a complete list of values.
DAC
Code
Current (mA)
(Full Scale =
25 mA)
LEVEL_SET =
000010
Current (mA)
(Full Scale =
12.5 mA)
LEVEL_SET =
001100
Current (mA)
(Full Scale =
8.25 mA)
LEVEL_SET =
010110
Current (mA)
(Full Scale =
6.25 mA)
LEVEL_SET =
100000
Current (mA)
(Full Scale =
5.0 mA)
LEVEL_SET =
101010
0x00 0.0 0.0 0.0 0.0 0.0
0x01 0.0016 0.0008 0.0005 0.0004 0.0003
0x02 0.0062 0.0031 0.0021 0.0016 0.0012
0x03 0.014 0.0070 0.0047 0.0035 0.0028
…
…
…
…
…
…
0x7F 25.0 12.5 8.33 6.25 5.0
Independent Sink Current LED7—Even Heartbeat Pulses (ISC7_HB)—Register 0x2E
Table 80. ISC7_HB Bit Map
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Reserved
SCD7_HB