LED7708 STMicroelectronics, LED7708 Datasheet - Page 37

• Manufacturer Part Number: LED7708
• Description: LED Lighting Drivers 16 Ch 85mA LED 3.6 to 36V 250kHz
• Manufacturer: STMicroelectronics

Specifications of LED7708

• Rohs: yes

LED7708
8.5.9
8.5.10
CHSEL register
The CHSEL register is a readable/writable configuration register. Every bit of this register
allows the user to enable/disable the channels. Independent control of the channels (e.g.
scrolling backlight or phase shift) can be achieved by acting on this register.
Table 17.
CHSTA register
The CHSTA register is a read only status register. Each bit of this register shows the status
of the corresponding channel. After the error detection sequence takes place, the channels
which have an excessive voltage drop (LED short-circuit) or that are unable to regulate the
nominal current (open channels) are tagged as faulty and the related CHSTA bits are
asserted.
The CHSEL register is not affected by the error detection sequence. The channels disabled
by clearing the corresponding bits of the CHSEL register are not involved in the error
detection and the corresponding bits of the CHSTA register are forced low. The CHSTA
register is automatically overwritten during subsequent error detection occurrences.
CHSEL0 to
CHSEL15
Bit
CHSEL register
Position
10
11
12
13
14
15
0
1
2
3
4
5
6
7
8
9
Attribute
R/W
Doc ID 022698 Rev 1
0= the corresponding channel is disabled.
1= the corresponding channel is active.
Recommended operating conditions
Meaning
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