ISD5216PI datasheet(25/75 Pages) WINBOND

25 / 75 page

ISD5216

Publication Release Date: Jan. 31, 2006

- 25 -

Revision B.4

7.5.5. Power-up

The ISD5216 must be powered up before sending any other commands. Wait for Tpud time before

sending the next command.

7.5.6. Read Status

When the device is polled with the Read Status command, it will return three bytes of data. The first

byte is the status byte, the next is the upper address byte and the last is the lower address byte. The

status register is one byte long and its bit function is:

BIT#

NAME

FUNCTION

EOM

Indicates whether an EOM interrupt has occurred.

OVF

Indicates whether an overflow interrupt has occurred.

READY

Indicates the internal status of the device – if READY is LOW no new

commands should be sent to device.

Device is powered down if PD is HIGH.

PRB

Play/Record mode indicator. HIGH=Play/LOW=Record.

DEVICE_ID

An internal device ID. This is 001 for the ISD5216.

The lower address byte will always return the block address bits as zero, either in digital or analog

mode.

It is good practice to read the status register after a Write or Record operation to ensure that the

device is ready to accept new commands. Depending upon the design and the number of pins

available on the controller, the polling overhead can be reduced. If

INT and RAC are tied to the

microcontroller, the controller does not have to poll as frequently to determine the status of the

ISD5216

7.5.7. Attaching an Address to a Command

In the I

2C write mode, the device can accept data sent after the command byte. If a register load

option is selected, the next two bytes are loaded into the selected register. The format of the data is

MSB first, as specified by the I

2C standard. Thus to load DATA<15:0> into the device, DATA<15:8> is

sent first, the byte is acknowledged, and DATA<7:0> is sent next. The address register consists of two

bytes. The format of the address is as follows:

ADDRESS<15:0> = PAGE_ADDRESS<10:0>, BLOCK_ADDRESS<4:0>

If an analog function is selected, the block address bits must be set to 00000. Digital Read and Write

are block addressable.

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