CS5523-AS Cirrus Logic Inc, CS5523-AS Datasheet - Page 18

• Manufacturer Part Number: CS5523-AS
• Description: ADC (A/D Converters) 4-Ch 16-Bit Delta Sigma ADC
• Manufacturer: Cirrus Logic Inc

Specifications of CS5523-AS

• Architecture: Delta-Sigma
• Conversion Rate: 0.617 KSPs
• Input Type: Voltage
• Maximum Power Dissipation: 500 mW
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: SOIC-8
• Minimum Operating Temperature: - 40 C
• Lead Free Status / Rohs Status: No

1.2.1 System Initialization
After
CS5521/22/2324/28 devices, the user should wait
for the oscillator to start before attempting to com-
municate with the converter. If a 32.768 kHz crys-
tal is used, this may be 500 milliseconds.
The initialization sequence should be as follows:
Initialize the serial port by sending the port initial-
ization sequence of 15 bytes of all 1's followed by
one byte with the following bit contents '1111 110'.
This sequence places the chip in the command
mode where it waits for a valid command to be
written. The first command should be to perform a
system reset. This is accomplished by writing a
18
power
is
first
applied
to
the
logic 1 to the RS (Reset System) bit in the configu-
ration register. After a reset the RV bit is set until
the configuration register is read. The user must
then write a logic 0 to the RS bit to take the part out
of reset mode. Any other bits written to the config-
uration register at this time will be lost. The con-
figuration register must be written again once RS=
0 to set any other bits to their desired settings.
After a reset, the on-chip registers are initialized to
the following states:
configuration register:
offset registers:
gain registers:
channel setup registers:
CS5521/22/23/24/28
000040(H)
000000(H)
400000(H)
000000(H)
DS317F8