MSP4458 datasheet(17/85 Pages) MICRONAS

17 / 85 page

PRELIMINARY DATA SHEET

MSP 44x8G

Micronas

3.1.4. Proposals for General MSP 44x8G

I2C Telegrams

3.1.4.1. Symbols

daw

write device address (80hex, 84hex or 88hex)

dar

read device address (81hex, 85hex or 89hex)

Start Condition

Stop Condition

Address Byte

Data Byte

3.1.4.2. Write Telegrams

write to CONTROL register

write data into demodulator

write data into DSP

3.1.4.3. Read Telegrams

read data from demodulator

read data from DSP

3.1.4.4. Examples

<80 00 80 00>

RESET MSP statically

<80 00 00 00>

Clear RESET

<80 10 00 20 00 03>

Set demodulator to stand. 03hex

<80 11 02 00 <81 dd dd>

Read STATUS

<80 12 00 08 01 20>

Set main channel

source to NICAM and

Matrix to STEREO

More examples of typical application protocols are

listed in Section 3.4. “Programming Tips” on page 34.

3.2. Start-Up Sequence:

Power-Up and I2C Controlling

After POWER ON or RESET (see Fig. 4–20 on

page 56), the IC is in an inactive state. All registers are

in the reset position (seeTable 3–5 and Table 3–6), the

analog outputs are muted. The controller has to initial-

ize all registers for which a non-default setting is nec-

essary.

3.3. MSP 44x8G Programming Interface

3.3.1. User Registers Overview

The MSP 44x8G is controlled by means of user regis-

ters. The complete list of all user registers is given in

the following tables. The registers are partitioned into

the demodulator section (subaddress 10hex for writing,

11hex for reading) and the baseband processing sec-

tions (subaddress 12hex for writing, 13hex for reading).

Write and read registers are 16-bit wide, whereby the

MSB is denoted bit[15]. Transmissions via I2C bus have

to take place in 16-bit words (two byte transfers, with the

most significant byte transferred first). All write registers,

except the demodulator write registers, are readable.

Unused parts of the 16-bit write registers must be zero.

Addresses not given in this table must not be written.

An overview of all MSP 44x8G write registers is shown

in Table 3–5; all read registers are given in Table 3–6.

Additional read and write registers, together with a

detailed description of the manual mode, can be found

in the “Appendix B: Manual Mode” on page 73.

MSP4458 Datasheet(PDF) 17 Page - Micronas

MSP4458 Datasheet(HTML) 17 Page - Micronas

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85

Datasheet Download

Link URL