M61140FP Ver la hoja de datos (PDF) - Renesas Electronics

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M61140FP

Tuner Single Chip

Renesas Electronics 

M61140FP

Setting Data

M61140FP's bus format is based on Philips's I2C-bus.

Bidirectional bus communication control can be performed. It consists of WRITE mode which receives various data,

and READ mode which transmits data. Recognition in WRITE mode and READ mode is performed by specification of

the last bit on Address Byte (R/W bit). When the setup of a R/W bit is "0", it is set as WRITE mode and, in the case of

"1", is set as READ mode. Furthermore, it has the address in which four programs are possible.

It enables this to use two or more devices on the same I2C bus.

Moreover, four programmable addresses are possible. Therefore, two or more devices become usable on I2C bus.

A setup of an address is chosen by the voltage impressed to an address setting terminal (ADS:25 pin).

If the address Byte in agreement is received, a data line will be set to "L" between knowledge, and at the time of

WRITE mode, if Data Byte is received, SDA line between knowledge will be set to "L."

It shows a definition of bus protocol admitted in the following.

Mode_1 STA CA DB1 DB2 CB1 CB2 STO

Mode_2 STA CA CB1 CB2 DB1 DB2 STO

Mode_3 STA CA DB1 DB2 STO

Mode_4 STA CA CB1 CB2 STO

STA : Start condition

STO : Stop condition

CA : Chip address

DB1 : Divider data byte 1

DB2 : Divider data byte 2

CB1 : Control data byte 1

CB2 : Band data byte 2

Rev.1.3 Jun 14, 2004 page 10 of 27

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