MAX19527 Evaluation Kit

8_ _ _______________________________________________________________________________________

Refer to the System Timing Requirements section in the

MAX19527 IC data sheet for additional information for

configuring the Data, FRAME, and CLKOUT test levels.

Power Management Tab

Power Management Controls

The Power_ Management group box contains two sets

of controls. The first set is used only when the SHDN

pin on the EV kit is set low and the second set is used

only when the SHDN pin on the EV kit is set high. When

checked, the IN1_Active–IN8_Active checkboxes enable

the input channel, or disable the input channel when left

unchecked. The Sleep/Nap_ Mode checkbox toggles

between nap mode when checked and sleep mode

when unchecked, as long as the IN1_Active–IN8_Active_

checkboxes are left unchecked. The Enable_ All and

Disable_All buttons are available to enable and disable

all input channels simultaneously. For more details on

power management, refer to the MAX19527 IC data

sheet.

Advanced User Interface

A serial interface can be used by advanced users by

selecting the Options_ |_ Interface_ (Advanced_ Users)_

menu item. Custom bit-banging firmware commands are

used to implement a bidirectional SPI interface. Read

addresses always begin with 0x8_ and write addresses

always begin with 0x0_.

For writing to registers, click on the Connection tab

(Figure 3). Enter the raw command bytes value of

0x77_0x05_0xA0_0xA0 (where 0x05 is the register write

address in hexadecimal, and 0xA0, 0xA0 are the data in

this example), then press the Send_raw_command_bytes_

button. Note that the custom firmware uses data transfer

of two bytes.

For reading registers, enter the raw command bytes

value of 0x72_ 0x85 (where 0x85 is the register read

address in hexadecimal), then press the Send_ raw

command_ bytes button. The register address and

content are displayed as the first and second byte of

data listed under the Returned_ data_ [hexadecimal]

label, respectively (Figure 4).

Figure 2. MAX19527 EV Kit Software (Power Management Tab)