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CS

CDIN

CCLK

Set CS = 1 here for Single Register Operations

Keep CS = 0 for writing or reading multiple registers in Continuous mode

byte 0

byte 1

byte 0

byte 1

byte N

Auto −Increment Control: Set to 0 for Single Register or Continuous Operation

Read/WriteControl: 0 = Write

1 = Read

Register Data

Control Byte

Register Data

Control Byte

CDOUT

High Impedance

byte 1

High Impedance

byte 2

byte N

Register Data

Register Data

R/W INC

1

0

A3

A2

A1

A0

Register Address

MSB

LSB

Control Byte Definition (Byte 0)

PCM4104-EP

SBAS419 – JUNE 2007

The Increment bit, INC, enables or disables the Auto-Increment mode of operation. When this bit is set to a 0,

auto-increment operation is disabled, and the operation performed is either Single Register or Continuous.

Setting the INC bit to 1 enables Auto-Increment operation.

control port. Any other combination for these bits will result in the port ignoring the write or read request.

The four-bit address field, A[3:0], is used to specify the control register address for the read or write operation, or

the starting address for an Auto-Increment write or read operation.

Figure 16. Single Register and Continuous Write or Read Operation

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