MSP3400C datasheet(23/73 Pages) MICRONAS

23 / 73 page

MSP 3400C

PRELIMINARY DATA SHEET

MICRONAS INTERMETALL

6.2.2. Control Register ‘MODE_REG’

The register ‘MODE_REG’ contains the control bits de-

termining the operation mode of the MSP 3400C; Table

6–7 explains all bit positions.

Table 6–7: Control word ‘MODE_REG’: All bits are “0” after power-on-reset

Bit

Function

Comment

Definition

Recom-

mendation

[0]

DMA_SYNC1)

Synchronization to DMA

0 : off

1 : on

[1]

DCTR_TRI

Digital control out 0/1 tristate

0 : active

1 : tristate

[2]

I2S_TRI

I2S outputs tristate (I2S_CL,

I2S_WS, I2S_DA_OUT)

0 : active

1 : tristate

[3]

I2S Mode1)

Master/Slave mode of the

I2S bus

0 : Master

1 : Slave

[4]

I2S_WS Mode

WS due to the Sony or

Philips-Format

0 : Sony

1 : Philips

[5]

Audio_CL_OUT

switch Audio_Clock_Output

to tristate

0 : on

1 : tristate

[6]

not used

must be 0

[7]

FM1 FM2

MSPC-channel 1 mode

s.Table 6–8

[8]

MSPC-channel 1/2 mode

0 : FM

1 : AM

s.Table 6–8

[9]

HDEV

High Deviation Mode

(channel matrix must be

sound A )

0 : normal mode

1 : high deviation mode

s.Table 6–8

[10]

not used

must be 1

[11]

S-Bus Mode2)

mode of Pins S_CL and S_ID

0 : Tristate

1 : Active

[12]

FM2 FIR Filter Gain

(FM2 = Ch1)

see table 6–10

0 : Gain = 6 dB

1 : Gain = 0 dB

[13]

FM2 FIR Filter Coeff. Set

(FM2 = Ch1)

see table 6–10

0 : use FIR_REG_1

1 : use FIR_REG_2

[14]

ADR

Mode of ADR Interface

0 : normal mode

1 : ADR mode

[15]

AM-Gain

additional gain in AM-mode

0 : 0 dB

1 : +12 dB

1) In case of synchronization to DMA, no I2S-slave mode possible.

In case of I2S-slave mode, no synchronization to DMA allowed. I2S-Slave mode dominates.

2) The normal operation mode is ‘Tristate’; SBUS is only used in conjunction with DMA.

X: Depend-

ing on mode

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