AAT2400 Datasheet, PDF (19/32 Pages) Skyworks Solutions Inc. – Sixteen-Channel White LED Driver Solution

ADDR: F2h
Fault Reporting 2:
Individual Sink Fault Reporting
Bit Bit Name Default Access
1:0 CS5 Fault
10h
R/W
3:2 CS6 Fault
10h
R/W
5:4 CS7 Fault
10h
R/W
7:6 CS8 Fault
10h
R/W
Description
00: report both;
01: report short
only; 10: report
open only; 11:
report none.
00: report both;
01: report short
only; 10: report
open only; 11:
report none.
00: report both;
01: report short
only; 10: report
open only; 11:
report none.
00: report both;
01: report short
only; 10: report
open only; 11:
report none.
Table 18: Fault Reporting Register 2 Settings.
DATA SHEET
AAT2400/2401
Sixteen-Channel White LED Driver Solution
with Full LED Current and Timing Control
ADDR: F6h
Fault Reporting 4:
Individual Sink Fault Reporting
Bit Bit Name Default Access
1:0 CS13 Fault
10h
R/W
3:2 CS14 Fault
10h
R/W
5:4 CS15 Fault
10h
R/W
7:6 CS16 Fault
10h
R/W
Description
00: report both;
01: report short
only; 10: report
open only; 11:
report none.
00: report both;
01: report short
only; 10: report
open only; 11:
report none.
00: report both;
01: report short
only; 10: report
open only; 11:
report none.
00: report both;
01: report short
only; 10: report
open only; 11:
report none.
Table 20: Fault Reporting Register 4 Settings.
ADDR: F4h
Fault Reporting 3:
Individual Sink Fault Reporting
Bit Bit Name Default Access
1:0 CS9 Fault
10h
R/W
3:2 CS10 Fault
10h
R/W
5:4 CS11 Fault
10h
R/W
7:6 CS12 Fault
10h
R/W
Description
00: report both;
01: report short
only; 10: report
open only; 11:
report none.
00: report both;
01: report short
only; 10: report
open only; 11:
report none.
00: report both;
01: report short
only; 10: report
open only; 11:
report none.
00: report both;
01: report short
only; 10: report
open only; 11:
report none.
Table 19: Fault Reporting Register 3 Settings.
Serial Peripheral Interface (SPI)
The serial peripheral interface is a synchronous serial
interface for address and data transfer at bit rates of up
to 30Mhz. It is configured in 8-bit bytes designed to
interface with a standard SPI bus on many microcon-
trollers. Four pins are used to communicate on the SPI:
SCLK (synchronous clock), CS (chip select, to signify the
start of a transfer), SDI (data input to the AAT2400/2401
for write operations, latched on the rising edge of SCLK),
and SDO (data output from the AAT2400/2401 for read
operations, presented on the falling edge of SCLK).
Data and address are always sent MSB first. The first
8-bit byte of a transfer is always the device address. The
second byte of a transfer is always the address of the
register to be written to or read from. The subsequent
bytes are one or more bytes of data. The LSB (bit 0) of
the device address byte contains a bit that signifies a read
or a write operation. If R/W is 0, one or more write cycles
occur, and if R/W is 1, one or more read cycles occur.
Multi-byte transfers are similar to single byte transfers,
except that the CS pin is held low, and additional SCLK
cycles are sent until the end of the burst. In multi-byte
transfers, the registers are written to or read from in
sequential order. After the end of the address space, the
multi-byte transfer is terminated.
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [e-mail] • www.skyworksinc.com
202307A • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice. • August 24, 2012
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