MAX12005 데이터 시트보기 (PDF) - Maxim Integrated

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MAX12005

Satellite IF Switch

Maxim Integrated 

Satellite IF Switch

Table 2. DiSEqC Slave Control Interface Command Bytes

HEX VALUE

0x00

0x01

COMMAND

Reset

Clr Reset

FUNCTION

Reset DiSEqC decoder

Clear reset flag

Clears Status_reg, bit 0

0x04

Set Contend

Set contention flag

Sets Status_reg, bit 7

0x05

Contend

Return address only if contention flag is set

Reads Address_reg

0x06

Clr Contend

Clear contention flag

Clears Status_reg, bit 7

0x07

Address

Return address unless contention flag is set

Reads Address_reg

0x08

0x09

Move C

Move

Change address only if contention flag is set

Writes to Address_reg

Change address unless contention flag is set

Writes to Address_reg

0x10

Status

Read status register flags

Reads Status_reg

0x11

Config

Read configuration flags

Reads Configuration_reg

0x14

Switch 0

Read switching state flags

Reads Switch_reg

0x20

Set Lo

Select the low local oscillator frequency

Clears Switch_reg, bit 4

0x21

Set VR

Select vertical polarization (or right circular)

Clears Switch_reg, bit 5

0x22

Set Pos A

Select satellite position A (or position C)

Clears Switch_reg, bit 6

0x23

Set S0A

Select switch option A (i.e. positions A/B)

Clears Switch_reg, bit 7

0x24

Set Hi

Select the high local oscillator frequency

Sets Switch_reg, bit 4

0x25

Set HL

Select horizontal polarization (or left circular)

Sets Switch_reg, bit 5

0x26

Set Pos B

Select satellite position B (or position D)

Sets Switch_reg, bit 6

0x27

Set S0B

Select switch option B (i.e. positions C/D)

Sets Switch_reg, bit 7

0x30

Sleep

Ignore all bus commands except Awake

Sets Status_reg, bit 1

0x31

Awake

Respond to future bus commands normally

Clears Status_reg, bit 1

DATA BYTES SLAVE REPLY

—

Framing byte

—

Framing byte

—

—

—

—

1 byte

Framing byte

Framing + data

byte

Framing byte

Framing + data

byte

Framing byte

1 byte

—

—

—

—

Framing byte

Framing + data

byte

Framing + data

byte

Framing + data

byte

Framing byte

—

Framing byte

—

Framing byte

—

Framing byte

—

Framing byte

—

Framing byte

—

Framing byte

—

Framing byte

—

Framing byte

—

Framing byte

11

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