CS44210 datasheet(33/38 Pages) CIRRUS

Nome de Peças	CS44210

Descrição Electrónicos	DIGITAL PWM CONTROLLER WITH HEADPHONE MONITOR

PDF	38 Pages

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Fabricante Electrônico	CIRRUS [Cirrus Logic]

Página de início	http://www.cirrus.com

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CS44210

DS539PP1

7.3.2 Reading in SPI

Figure 10 shows the operation of the control port in

SPI format. To read to a register, bring CS low. The

first 7 bits on CDIN form the chip address and must

be 0010000. The eighth bit is a read/write indicator

(R/W), which must be high to read. The CDOUT

line will then output the data from the register des-

ignated by the MAP. To read multiple registers,

keep CS low and continue providing clocks on

CCLK. End the read transaction by setting CS high.

The CDOUT line will tri-state once CS goes high.

7.4 Memory Address Pointer (MAP)

7.4.1 INCR (Auto Map Increment Enable)

Default = ‘0’

0 - Disabled

1 - Enabled

7.4.2 MAP3-0 (Memory Address Pointer)

Default = ‘0000’

LSB

byte 1

byte n

R/W

ADDRESS

CHIP

CDIN

CCLK

0010000

MSB

DATA

CDOUT

Figure 10. Control Port Timing, SPI Format (Read)

5432

INCR

Reserved

MAP3

MAP2

MAP1

MAP0

0000

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