M08045 datasheet(28/49 Pages) MA-COM

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Functional Description

M08035, M08045 Data Sheet V1

MACOM

™

080x5-DSH-001

4.6.3

Two-wire Interface Mode (SIC2)

In this mode a two-wire serial interface is used to program the device's internal registers, configuring the operation

of the M08035/M08045. When in SIC2 mode, MF[0:5] pins are configured as shown below.

Each device has an individual address and is addressed using an address byte, which is latched upon Power-On-

Reset (POR). In this mode, the M08035/M08045 are I2C-compatible slave devices that can operate at 100 kHz and

400 kHz for all allowed voltages seen at the DVDDIO pin.

The M08035/M08045 allow for forty different addresses to be programmed using the inputs ADD[3:0]; these inputs

have three states, low (L), high (H) and floating (F). The slave addresses are from 21h to 48h.

Table 4-5.

MF Pin Configuration in Two-wire Interface Mode

SIC4 Mode Pin Name

Function

MF0

SCL

Clock input from master host

MF1

SDA

Serial data input/output

MF2

ADD0

Address bit 0

MF3

ADD1

Address bit 1

MF4

ADD2

Address bit 2

MF5

ADD3

Address bit 3

Table 4-6.

M08035/M08045 2-Wire Interface Address Map (1 of 2)

Dec Add

Hex Add

Bin Add

Pin Setting

Function

ADD3

ADD2

ADD1

ADD0

010 0000b

EEPROM only, Address 50h

010 0000b

EEPROM only, Address 51h

010 0000b

EEPROM only, Address 52h

010 0000b

EEPROM only, Address 53h

010 0001b

Slave 1

010 0010b

Slave 2

010 0011b

Slave 3

010 0100 b

Slave 4

010 0101b

Slave 5

010 0110b

Slave 6

010 0111b

Slave 7

010 1000 b

Slave 8

010 1001b

Slave 9

010 1010b

Slave 10

010 1011b

Slave 11

010 1100b

Slave 12

010 1101b

Slave 13

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