CS47L85 datasheet(143/370 Pages) CIRRUS

143 / 370 page

CS47L85

Rev 4.3

143

BIT

LABEL

DEFAULT

DESCRIPTION

base address +008h

MIFn_I2C_CONFIG_5

MIFn_WDT_ENA

Watchdog Timer (WDT) control

0 = Disabled

1 = Enabled

When bus monitoring functions are

enabled (MIFn_SCL_MON_ENA=1),

the Watchdog Timer is used to detect

the SCLK line being pulled low for a

prolonged duration.

base address +080h

MIFn_I2C_STATUS_1

MIFn_WDT_TIMEOUT_STS

Watchdog Timer (WDT) Error Status

This bit, when set, indicates that the

WDT expired during the I2C

transaction.

This bit is latched when set; it is

cleared by writing ‘1’.

This bit is automatically cleared on

next I2C transaction.

MIFn_NACK_STS

NACK Error Status

This bit, when set, indicates that a

NACK Error signal was received

during the I2C transaction.

This bit is latched when set; it is

cleared by writing ‘1’.

This bit is automatically cleared on

next I2C transaction.

base address +100h

MIFn_CONFIG_1

MIFn_START

Starts the I2C transaction

Write ‘1’ to start.

base address +104h

MIFn_CONFIG_3

17:16

MIFn_WORD_SIZE [1:0]

Selects the data word format.

I2C transactions are made up of 1-

Byte data words; the sequence order

of these words differs according to

the applicable word format.

Correct setting of the

MIFn_WORD_SIZE field ensures

that each data word is

transmitted/received as Most-

Significant-Byte first.

00 = 8-bit (1, 2, 3, 4, 5, 6, 7, 8, etc)

01 = 16-bit (2, 1, 4, 3, 6, 5, 8, 7, etc)

10 = 32-bit (4, 3, 2, 1, 8, 7, 6, 5, etc)

The numbers in brackets describe

the order in which the applicable

MIFn_[TX|RX]_BYTEx fields are

transmitted/received over the I2C

interface.

MIFn_READ_WRITE_SEL

Selects the I2C Command type

0 = Master Write

1 = Master Read

base address +106h

MIFn_CONFIG_4

20:0

MIFn_TX_LENGTH [20:0]

00_0000h

Selects the total number of data

bytes in an I2C Write operation.

00_0000h = 1 byte

00_0001h = 2 bytes

00_0002h = 3 bytes

…

1F_FFFFh = 2,097,152 bytes

CS47L85 Datasheet(PDF) 143 Page - Cirrus Logic

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