19-5554; Rev 1; 10/11 TION KIT EVALUA BLE AVAILA Satellite IF Switch Features The MAX12005 satellite IF switch IC is designed for multi-user applications supporting two quad universal low-noise blocks (LNBs) to be matrix switched to four satellite receivers. The system can be easily expanded to accept 16 satellite IF inputs using the cascade option and one additional satellite IF switch IC. A configuration of eight satellite IF inputs to eight satellite receivers is also possible by using two ICs and adding eight input splitters. The insertion loss of these splitters can be compensated by a +6dB or +12dB input gain select. S 8-Input-to-4-Output Matrix Switch There are two ways to control the switch function. Each IC contains four DiSEqCK 2.0 decoders and four alternate tone/voltage decoders. The decoders use an integrated trimmed oscillator, simplifying the MAX12005 implementation into any system. There are four operational modes, which include LNB mode (for use within the LNB), cascade master mode, cascade slave mode, and single mode. S Four Integrated DiSEqC 2.0 Decoders with S Expandable to 16 Inputs with Cascade Master/ Slave Option S 950MHz to 2150MHz Operation S Greater than 30dB Switch Isolation S 0/+6/+12dB Input Stage Gain Selection to Compensate for Splitter Insertion Loss Gain Step for All Input Stages Is Commonly Controlled Through an Analog Select Pin Integrated Oscillator S Alternate Tone/Voltage Detection S ESD Protected to 2kV HBM The satellite IF switch is designed on an advanced SiGe process and is available in a lead-free 48-pin TQFN surface-mount package (7mm x 7mm). Applications Direct Broadcast Satellite Receivers Satellite IF Distribution L-Band Distribution Ordering Information PART TEMP RANGE PIN-PACKAGE MAX12005ETM+ -40NC to +85NC 48 TQFN-EP* +Denotes a lead(Pb)-free/RoHS-compliant package. *EP = Exposed paddle. DiSEqC is a trademark of EUTELSAT. ________________________________________________________________ Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. MAX12005 General Description MAX12005 Satellite IF Switch ABSOLUTE MAXIMUM RATINGS VCC to GND...........................................................-0.3V to +3.6V RFIN1–RFIN8 to GND............................................-0.3V to +1.5V CASCADE_IN1–CASCADE_IN4 to GND...............-0.3V to +1.5V RFOUT1–RFOUT4 to GND........................ -0.3V to (VCC + 0.3V) DISEQC_TX1–DISEQC_TX4 to GND..........-0.3V to (VCC + 0.3V) DISEQC_RX1–DISEQC_RX4 to GND.........-0.3V to (VCC + 0.3V) GAIN_SELECT, MODE_SELECT to GND....................................................-0.3V to (VCC + 0.3V) Continuous Power Dissipation (TA = +70NC) TQFN (derate 27.8 mW/NC above +70NC)...................2.2W Operating Ambient Temperature Range............ -40NC to +85NC Maximum Junction Temperature......................................+150NC Storage Temperature Range............................. -65NC to +150NC Lead Temperature (soldering, 10s).................................+300NC Soldering Temperature (reflow).......................................+260NC Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. CAUTION! ESD SENSITIVE DEVICE DC ELECTRICAL CHARACTERISTICS (VCC = +3.0V to +3.5V, TA = -40NC to +85NC, mode set to master, input gain stages set to highest gain, inputs matched to 75I, output loads = 75I. Typical values are at +3.3V and at TA = +25NC, unless otherwise noted.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP 3.0 MAX UNITS 3.5 V 250 mA Supply Voltage VCC Supply Current ICC +12dB GAIN_SELECT Input HighLevel Voltage VIH VCC 0.4V +6dB GAIN_SELECT Input Voltage Level and Range VIN 1/2 VCC Q200mV 0dB GAIN_SELECT Input Low-Level Voltage VIL Single MODE_SELECT Input HighLevel Voltage VIH VCC 0.4V Master MODE_SELECT Input Voltage Level and Range VIN 2/3 VCC Q200mV mV Slave MODE_SELECT Input Voltage Level and Range VIN 1/3 VCC Q200mV mV LNB MODE_SELECT Input Low-Level Voltage VIL GAIN_SELECT and MODE_SELECT Input Current IIN VIN = VCC DC Voltage Detect Input High Level VIH (Note 2) DC Voltage Detect Input Low Level VIL (Note 2) DISEQC_RX_ Input Current IIN VIN = high or low VCC = 3.3V, 0dB, one input selected, four outputs selected 150 V mV 0.4 V V 0.4 V 10 FA 1.23 V 1.11 V 1 FA DISEQC_TX_ Output High-Level Voltage VOH ILOAD = -1mA VCC 0.4V V DISEQC_TX_ Output Low-Level Voltage VOL ILOAD = +1mA 0.4 V 2 Satellite IF Switch (MAX12005 EV Kit, VCC = +3.0V to +3.5V, fIN = 950MHz, VIN = 70dBFV, TA = -40NC to +85NC, mode set to master, input gain stages set to 0dB, RF inputs matched to 75I, RF output loads = 75I. Typical values are at +3.3V and at TA = +25NC, unless otherwise noted.) (Note 1) PARAMETER SYMBOL Operation Frequency fRF DISEQC_RX_ Tone Input Level VIN CONDITIONS MIN fIN = 22kHz (Note 5) Cascade Input Switch Gain at 950MHz |S21| Switch-to-Switch Gain Match D|S21| MAX 2150 60 0dB gain Switch Gain at 950MHz (Note 3) TYP 950 MHz mVP-P 0 +6dB gain +6 +12dB gain +12 dB 0 At 950MHz (Note 4) UNITS -1.5 dB +3.5 dB Gain Slope with Frequency Between 950MHz and 2150MHz +3 dB Single-Input Source Gain Change Gain change from single output connected to a single input to four outputs connected to a single input -0.4 dB 3rd-Order Intermodulation Product (Case 1) IM3 Output level set to +89dBFV by varying three equal amplitude tones at 955MHz, 962MHz, and 965MHz; measure products at 952MHz and 958MHz -35 dBc 3rd-Order Intermodulation Product (Case 2) IM3 Output level set to +89dBFV by varying three equal amplitude tones at 2135MHz, 2142MHz, and 2145MHz; measure products at 2132MHz and 2138MHz RFIN1–RFIN8 Input Return Loss |S11| -12 dB CASCADE_IN1–CASCADE_IN4 Input Return Loss |S11| -12 dB RFOUT1–RFOUT4 Output Return Loss |S22| -34 dBc -12 dB Switch Isolation 55 dB Port-to-Port Isolation 33 dB 8 MHz DiSEqC Clock fOSC Note 1: Production tested at +25NC; guaranteed by design and characterization at -40NC and +85NC. Note 2: To supply the specified input-voltage-detect levels requires the use of a voltage-divider comprised of 12.7kI and 1.02kI Q0.5% tolerance resistors. The voltage being divided is expected to be VOL = 14.75V maximum and VOH = 16.75V minumum. Note 3: The common input gain step is set by analog control. All gain measurements have only one output connect to each input. Switch gain measurements do not include cascade inputs as part of the switch signal path. Note 4: Switch-to-switch gain match is defined as each switch to every other switch gain match. Each switch must be set up with the same input gain step. Note 5:60mVP-P square wave for fIN = 22kHz. For sine wave, the typical minimum is 100mVP-P. 3 MAX12005 AC ELECTRICAL CHARACTERISTICS Typical Operating Characteristics (MAX12005 EV Kit, VCC = +3.0V to +3.5V, fIN = 950MHz, VIN = 70dBFV, TA = -40NC to +85NC, mode set to master, input gain stages set to 0dB, RF inputs matched to 75I, RF output loads = 75I. Typical values are at +3.3V and at TA = +25NC, unless otherwise noted. Production tested at +25NC; guaranteed by design and characterization at -40NC and +85NC.) -2 2 1 0 -1 -25 -30 -35 FREQUENCY (Hz) 9.5E+08 2.15E+09 1.95E+09 1.75E+09 1.55E+09 1.35E+09 9.5E+08 1.15E+09 -50 FREQUENCY (Hz) PORT-TO-PORT ISOLATION (VAR. PORTS) -15 -30 ISOLATION (dB) -20 -20 -25 -30 -35 -35 -40 -45 -40 ISOLATION -10 SWITCH ISOLATION (VAR. CH) -30 MAX12005 toc08 -10 MAX12005 toc07 -5 -50 -60 -50 -55 -60 -65 -80 FREQUENCY (Hz) 2.15E+09 1.95E+09 1.75E+09 1.55E+09 1.35E+09 1.15E+09 -70 9.5E+08 2.15E+09 -90 1.95E+09 -75 -50 1.75E+09 -80 1.55E+09 -45 1.35E+09 -70 1.15E+09 -40 9.5E+08 MAX12005 toc09 RF S22 (VAR. OUTPUT) FREQUENCY (Hz) FREQUENCY (Hz) 2.15E+09 2.15E+09 -4 1.95E+09 -4 1.75E+09 -45 1.55E+09 -3 1.35E+09 -40 -3 1.15E+09 -2 9.5E+08 -2 FREQUENCY (Hz) MAX12005 toc03 -20 1.95E+09 -1 -15 1.75E+09 0 -10 1.55E+09 1 -5 MAX12005 toc06 3 MAGNITUDE (dB) 2 RF S11 (VAR. INPUT) MAGNITUDE (dB) 3 FREQUENCY (Hz) 4 MAX12005 toc04 4 2.15E+09 S21 -40°C (0dB GAIN, VAR. IN/OUT) 2.15E+09 S21 +85°C (0dB GAIN, VAR. IN/OUT) 3.6 1.95E+09 3.5 1.95E+09 3.4 1.75E+09 3.3 1.75E+09 3.2 VOLTAGE (V) 1.55E+09 3.1 1.55E+09 3.0 1.35E+09 2.9 3.6 1.35E+09 3.5 1.35E+09 3.4 1.15E+09 3.3 1.15E+09 3.2 VOLTAGE (V) 9.5E+08 3.1 9.5E+08 3.0 MAX12005 toc05 2.9 MAGNITUDE (dB) -4 -4 120 0 -1 -3 -3 TA = -40°C 1 -2 950MHz 140 4 1550MHz -1 2 1.15E+09 GAIN (dB) TA = +25°C 2150MHz 3 MAGNITUDE (dB) 1 0 160 4 MAX12005 toc02 TA = +85°C 180 CURRENT (mA) 2 MAX12005 toc01 200 S21 +25°C (0dB GAIN, VAR. IN/OUT) VOLTAGE vs. GAIN (+25°C) VOLTAGE vs. CURRENT (0dB GAIN) MAGNITUDE (dB) MAX12005 Satellite IF Switch Satellite IF Switch DISEQC_TX4 DISEQC_RX4 DISEQC_TX3 DISEQC_RX3 DISEQC_TX2 DISEQC_RX2 DISEQC_TX1 DISEQC_RX1 VCC RFOUT4 GND VCC TOP VIEW 36 35 34 33 32 31 30 29 28 27 26 25 GND RFOUT3 37 24 GND 38 23 CASCADE_IN4 VCC 39 22 GND RFOUT2 40 21 CASCADE_IN3 GND 41 20 GND VCC 42 19 CASCADE_IN2 MAX12005 RFOUT1 43 18 GND GND 44 17 CASCADE_IN1 VCC 45 16 GND VCC 46 15 RFIN8 MODE_SELECT 47 14 GND 13 RFIN7 RFIN3 8 9 10 11 12 GND GND 7 RFIN6 RFIN2 6 GND 5 GND 4 RFIN5 3 RFIN4 2 GND 1 GND 48 RFIN1 GAIN_SELECT + TQFN Pin Description PIN NAME 1 RFIN1 RF Input from LNB FUNCTION 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 35, 38, 41, 44 GND Electrical Ground 3 RFIN2 RF Input from LNB 5 RFIN3 RF Input from LNB 7 RFIN4 RF Input from LNB 9 RFIN5 RF Input from LNB 11 RFIN6 RF Input from LNB 13 RFIN7 RF Input from LNB 15 RFIN8 RF Input from LNB 17 CASCADE_IN1 Cascade Input from RF Output of Second MAX12005 in Slave Mode 19 CASCADE_IN2 Cascade Input from RF Output of Second MAX12005 in Slave Mode 21 CASCADE_IN3 Cascade Input from RF Output of Second MAX12005 in Slave Mode 23 CASCADE_IN4 Cascade Input from RF Output of Second MAX12005 in Slave Mode 5 MAX12005 Pin Configuration Satellite IF Switch MAX12005 Pin Description (continued) PIN 6 NAME FUNCTION 25 DISEQC_TX4 Return DiSEqC Signal Output to Satellite Receiver (Master) or Outputs Envelope of Received DiSEqC Signal for Use by External Controller 26 DISEQC_RX4 Input for DiSEqC Slave Signal from Satellite Receiver or Master 27 DISEQC _TX3 Return DiSEqC Signal Output to Satellite Receiver (Master) or Outputs Envelope of Received DiSEqC Signal for Use by External Controller 28 DISEQC _RX3 Input for DiSEqC Slave Signal from Satellite Receiver or Master 29 DISEQC _TX2 Return DiSEqC Signal Output to Satellite Receiver (Master) or Outputs Envelope of Received DiSEqC Signal for Use by External Controller 30 DISEQC _RX2 Input for DiSEqC Slave Signal from Satellite Receiver or Master 31 DISEQC _TX1 Return DiSEqC Signal Output to Satellite Receiver (Master) or Outputs Envelope of Received DiSEqC Signal for Use by External Controller Input for DiSEqC Slave Signal from Satellite Receiver or Master 32 DISEQC _RX1 33, 36, 39, 42, 45, 46 VCC 34 RFOUT4 RF Output to Satellite Receiver 37 RFOUT3 RF Output to Satellite Receiver 40 RFOUT2 RF Output to Satellite Receiver 43 RFOUT1 RF Output to Satellite Receiver 47 MODE_SELECT 48 GAIN_SELECT — EP 3.0V to 3.5V Supply. Analog supply pins 33, 36, 39, and 42. Digital supply pins 45 and 46. Satellite Switch Mode Select Gain Select for All Input Stages Exposed Pad Ground. The exposed pad must be soldered to the circuit board for proper thermal and electrical performance. Satellite IF Switch 33, 36, 39, 42, 45 VCC 0/+6/+12dB 9:1 MUX 1 RFIN1 SATELLITE IF SWITCH RFOUT1 43 RFOUT2 40 RFOUT3 37 RFOUT4 34 VCC 46 MODE_SELECT 47 GAIN_SELECT 48 3 RFIN2 9:1 MUX 5 RFIN3 7 RFIN4 9:1 MUX 9 RFIN5 MAX12005 11 RFIN6 CONTROL LOGIC 9:1 MUX 13 RFIN7 15 RFIN8 VOLTAGE/ TONE DETECTOR DiSEqC 2.0 VOLTAGE/ TONE DETECTOR DiSEqC 2.0 VOLTAGE/ TONE DETECTOR DiSEqC 2.0 DiSEqC 2.0 VOLTAGE/ TONE DETECTOR PORT SWITCH CONTROL 8MHz OSCILLATOR 16 GND CASCADE_IN1 CASCADE_IN2 CASCADE_IN3 CASCADE_IN4 DISEQC_TX1 DISEQC_RX1 DISEQC_TX2 DISEQC_RX2 DISEQC_TX3 DISEQC_RX3 DISEQC_TX4 DISEQC_RX4 FREQUENCY OUT 17 19 21 23 31 32 29 30 27 28 25 26 GND 2, 4, 6, 8, 10, 12, 14, 18, 20, 22, 24, 35, 38, 41, 44 7 MAX12005 Functional Diagram MAX12005 Satellite IF Switch Detailed Description The MAX12005 satellite IF switch features eight 75I inputs with three selectable gain steps of 0, +6dB, and +12dB. Each of the eight input amplifiers feeds into four nine-to-one multiplexers with the switching controlled by voltage/tone or DiSEqC signaling from up to four receivers. The output of each multiplexer is then sent to a satellite receiver through a 75I buffered output stage. The satellite IF switch has four modes of operation. Two modes are used to increase the number of IF inputs by cascading two MAX12005 ICs together. The first IC is set to master mode to enable the four cascade inputs. The second IC is set to slave mode with its outputs connected to the cascade inputs of the master IC. The LNB mode sets up the IC to recognize LNB DiSEqC signaling to control switching and ignore DiSEqC signaling for multiswitch applications. The single mode sets up the IC to recognize multiswitch DiSEqC signaling to control switching and ignore LNB DiSEqC signaling. For the LNB, single, and slave modes, the four cascade inputs are disabled. Input Gain Select The voltage supplied to the GAIN_SELECT pin provides the selection for one of three gain settings available at all eight input stages, as follows: GND = 0dB 1/2 VCC = +6dB VCC = +12dB The +6dB gain step voltage can be set through the use of a simple supply voltage-divider. This gain select feature is intended to compensate for input signal losses due to the use of input RF signal splitters. SPI is a trademark of Motorola, Inc. 8 Chip Mode Select The voltage supplied to the MODE_SELECT pin provides the selection for one of four IC operational modes, as follows: GND = LNB Mode 1/3 VCC = Slave Mode (Cascade Operation) 2/3 VCC = Master Mode (Cascade Operation) VCC = Single Mode The slave mode and master mode voltages can be set through the use of simple supply voltage-dividers. Switch Control Voltage/tone signaling is the default switch control after power-up or when a receiver is connected or reconnected with the die power on. After an individual decoder receives a DiSEqC signal, that decoder switches from voltage/one control to DiSEqC control until a new receiver connection is made or when the IC has a power-on reset. Layout Considerations To minimize coupling between different sections of the IC, a star power-supply routing configuration with a large decoupling capacitor at a central VCC node is recommended. The VCC traces branch out from this node, each going to a separate VCC node in the circuit. Place a bypass capacitor as close as possible to each supply pin. This arrangement provides local decoupling at each VCC pin. Use at least one via per bypass capacitor for a low-inductance ground connection. Do not share the capacitor ground vias with any other branch. The MAX12005 EV kit can be used as a starting point for layout. For best performance, take into consideration grounding and routing of RF, baseband, and powersupply PCB proper line. Make connections from vias to the ground plane as short as possible. On the highimpedance ports, keep traces short to minimize shunt capacitance. EV kit schematic and Gerber files can be found at www.maxim-ic.com. Satellite IF Switch 0x00 Any device 0x10 Any LNB, switcher, or SMATV MAX12005 DiSEqC Slave Control Interface The DiSEqC interface is designed according to the DiSEqC Bus Functional Specification version 4.2. All framing bytes 0xE0 through 0xE7 are supported. The following address bytes are supported: 0x11LNB 0x14 Switcher, DC-blocking PRIMARY DEVICE RFIN1 TO SAT RECEIVER 1 TO SAT RECEIVER 2 TO SAT RECEIVER 3 TO SAT RECEIVER 4 SAT A, LOW, VERTICAL RFIN2 RFOUT1 SAT A, LOW, HORIZONTAL RFIN3 RFOUT2 SAT A, HIGH, VERTICAL RFIN4 RFOUT3 SAT A, HIGH, HORIZONTAL RFIN5 SAT B, LOW, VERTICAL RFIN6 RFOUT4 SAT B, LOW, HORIZONTAL RFIN7 SAT B, HIGH, VERTICAL RFIN8 SAT B, HIGH, HORIZONTAL CASCADE1 CASCADE2 CASCADE3 CASCADE4 SECONDARY DEVICE RFIN1 RFIN2 RFOUT1 RFIN3 RFOUT2 RFIN4 RFOUT3 RFIN5 RFIN6 RFOUT4 RFIN7 RFIN8 SAT C, LOW, VERTICAL SAT C, LOW, HORIZONTAL SAT C, HIGH, VERTICAL SAT C, HIGH, HORIZONTAL SAT D, LOW, VERTICAL SAT D, LOW, HORIZONTAL SAT D, HIGH, VERTICAL SAT D, HIGH, HORIZONTAL CASCADE1 CASCADE2 CASCADE3 CASCADE4 Figure 1. Typical Cascade Connection Between Two Satellite Switch ICs 9 MAX12005 Satellite IF Switch Table 1 shows the coherence between the terms used by the DiSEqC standard and the pin names used by the MAX12005 along with the command sequences used to control switching. Table 2 lists the supported command bytes. The command byte is the 3.byte in the DiSEqC master frame (refer to the DiSEqC Bus Functional Specification version 4.2, top of page 13). The DiSEqC slave only sends a reply if requested by a framing byte 0xE2 or 0xE3 in the master frame (refer to DiSEqC Bus Functional Specification version 4.2, bottom of page 13). All DiSEqC commands control the contents of the DiSEqC registers described in chapter 7.1. Table 3 lists the supported command bytes. The DiSEqC commands are internally mapped to individually named registers. The registers do not have an address. Table 1. DiSEqC Slave Control Interface DEVICE (Note 1) INPUT Primary RFIN1 Satellite A, low band, vertical polarization 0x23, 0x22, 0x20, 0x21 RFIN2 Satellite A, low band, horizontal polarization 0x23, 0x22, 0x20, 0x25 RFIN3 Satellite A, high band, vertical polarization 0x23, 0x22, 0x24, 0x21 RFIN4 Satellite A, high band, horizontal polarization 0x23, 0x22, 0x24, 0x25 RFIN5 Satellite B, low band, vertical polarization 0x23, 0x26, 0x20, 0x21 RFIN6 Satellite B, low band, horizontal polarization 0x23, 0x26, 0x20, 0x25 RFIN7 Satellite B, high band, vertical polarization 0x23, 0x26, 0x24, 0x21 RFIN8 Satellite B, high band, horizontal polarization 0x23, 0x26, 0x24, 0x25 RFIN1 Satellite C, low band, vertical polarization 0x27, 0x22, 0x20, 0x21 RFIN2 Satellite C, low band, horizontal polarization 0x27, 0x22, 0x20, 0x25 RFIN3 Satellite C, high band, vertical polarization 0x27, 0x22, 0x24, 0x21 RFIN4 Satellite C, high band, horizontal polarization 0x27, 0x22, 0x24, 0x25 RFIN5 Satellite D, low band, vertical polarization 0x27, 0x26, 0x20, 0x21 RFIN6 Satellite D, low band, horizontal polarization 0x27, 0x26, 0x20, 0x25 RFIN7 Satellite D, high band, vertical polarization 0x27, 0x26, 0x24, 0x21 RFIN8 Satellite D, high band, horizontal polarization 0x27, 0x26, 0x24, 0x25 Secondary SIGNAL FROM DiSEqC COMMAND SEQUENCE (Note 2) Note 1: The primary device outputs connect directly to the satellite receivers. The secondary device outputs connect to the primary device through the cascade inputs. Also see Figure 1. Note 2: Only those DiSEqC commands that differ between sequences have to be sent to change the input, not all four commands. By default RFIN1 from the primary device is selected. The DiSEqC interface is designed according to the DiSEqC Bus Functional Specification version 4.2. 10 Satellite IF Switch HEX VALUE COMMAND 0x00 Reset Reset DiSEqC decoder FUNCTION DATA BYTES — Framing byte SLAVE REPLY 0x01 Clr Reset Clear reset flag Clears Status_reg, bit 0 — Framing byte 0x04 Set Contend Set contention flag Sets Status_reg, bit 7 — Framing byte 0x05 Contend Return address only if contention flag is set Reads Address_reg — Framing + data byte 0x06 Clr Contend Clear contention flag Clears Status_reg, bit 7 — Framing byte 0x07 Address Return address unless contention flag is set Reads Address_reg — Framing + data byte 0x08 Move C Change address only if contention flag is set Writes to Address_reg 1 byte Framing byte 0x09 Move Change address unless contention flag is set Writes to Address_reg 1 byte Framing byte 0x10 Status Read status register flags Reads Status_reg — Framing + data byte 0x11 Config Read configuration flags Reads Configuration_reg — Framing + data byte 0x14 Switch 0 Read switching state flags Reads Switch_reg — Framing + data byte 0x20 Set Lo Select the low local oscillator frequency Clears Switch_reg, bit 4 — Framing byte 0x21 Set VR Select vertical polarization (or right circular) Clears Switch_reg, bit 5 — Framing byte 0x22 Set Pos A Select satellite position A (or position C) Clears Switch_reg, bit 6 — Framing byte 0x23 Set S0A Select switch option A (i.e. positions A/B) Clears Switch_reg, bit 7 — Framing byte 0x24 Set Hi Select the high local oscillator frequency Sets Switch_reg, bit 4 — Framing byte 0x25 Set HL Select horizontal polarization (or left circular) Sets Switch_reg, bit 5 — Framing byte 0x26 Set Pos B Select satellite position B (or position D) Sets Switch_reg, bit 6 — Framing byte 0x27 Set S0B Select switch option B (i.e. positions C/D) Sets Switch_reg, bit 7 — Framing byte 0x30 Sleep Ignore all bus commands except Awake Sets Status_reg, bit 1 — Framing byte 0x31 Awake Respond to future bus commands normally Clears Status_reg, bit 1 — Framing byte 11 MAX12005 Table 2. DiSEqC Slave Control Interface Command Bytes MAX12005 Satellite IF Switch Table 2. DiSEqC Slave Control Interface Command Bytes (continued) HEX VALUE COMMAND FUNCTION DATA BYTES SLAVE REPLY 0x38 Write N0 Write to port group 0 Controls Switch_reg, bits 7 downto 4 (Note 1) 0x50 LO string Read current frequency Reads Low_LOF_reg2/1 or High_LOF_reg2/1 depending on Switch_reg, bit 4 (Note 2) — Framing + 2 data bytes Read current frequency table entry number Reads Low_LOF_reg0, bit 3 downto 0 or High_LOF_reg0, bit 3 downto 0 depending on Switch_reg, bit 4 — Framing + data byte 1 byte Framing byte 0x51 LO now 0x52 LO Lo Read low-frequency table entry number Reads Low_LOF_reg0, bit 3 downto 0 — Framing + data byte 0x53 LO Hi Read high-frequency table entry number Reads High_LOF_reg0, bit 3 downto 0 — Framing + data byte Note 1: Refer to DiSEqC Bus Functional Specification version 4.2, page 18. Note 2: Refer to DiSEqC Bus Functional Specification version 4.2, page 22. Table 3. DiSEqC Slave Control Interface Registers ADDRESS Address_reg Status_reg Configuration_reg 12 BIT ACC NAME FUNCTION DEFAULT LNB: 0x11 Switch: 0x14 7:0 RW address DiSEqC address 7 RW contention Bus contention flag 6 R standby Standby mode 0 5 — Unused — — 4 R aux_power Auxiliary power available 0 3 — Unused — 0 — Depends on voltage input 2 RW voltage 0 = Low DC, 1 = High DC 1 RW sleep 0 = Awake, 1 = Sleep 0 0 RW reset Reset flag 1 7 R analog Analog output facility 0 6 R standby Standby facility 0 5 R positioner Positioner capability 0 4 R power_detection External power-detection capability 0 3 R loop_through Loopthrough facility 0 2 R polarizer Polarizer capability 0 1 R switch Switcher capability 1 0 R lof_values LOF value output capability 1 Satellite IF Switch ADDRESS Switch_reg Low_LOF_reg_2 Low_LOF_reg_1 Low_LOF_reg_0 High_LOF_reg_2 High_LOF_reg_1 High_LOF_reg_0 BIT ACC 7 RW option NAME 0 = Positions A/B, 1 = Positions C/D FUNCTION 0 6 RW satellite 0 = Satellite A(C), 1 = Satellite B(D) 0 5 RW polarization 0 = Vertical, 1 = Horizontal 0 4 RW band 0 = Low band, 1 = High band 0 option_switchable Options switch available Depends on cascade input R satellite_switchable Satellite switch available 1 R polarization_switchable Polarization switch available 1 3 RW 2 1 0 R band_switchable Band switch available 7:4 R low_10GHz Low LOF value, 10GHz digit 0000 3:0 R low_1GHz 1GHz digit 1001 7:4 R low_100MHz 100MHz digit 0111 3:0 R low_10MHz 10MHz digit 0101 7:4 R low_1MHz 1MHz digit 0000 3:0 R low_table_entry Table entry number 0010 7:4 R high_10GHz High LOF value, 10GHz digit 0001 3:0 R high_1GHz 1GHz digit 0000 7:4 R high_100MHz 100MHz digit 0110 3:0 R high_10MHz 10MHz digit 0000 7:4 R high_1MHz 1MHz digit 0000 3:0 R high_table_entry Table entry number 0100 Chip Information PROCESS: BiCMOS DEFAULT 1 Package Information For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. PACKAGE TYPE PACKAGE CODE OUTLINE NO. LAND PATTERN NO. 48 TQFN T4877+4 21-0144 90-0130 13 MAX12005 Table 3. DiSEqC Slave Control Interface Registers (continued) Satellite IF Switch MAX12005 Revision History REVISION NUMBER REVISION DATE 0 9/10 Initial release — 1 11/11 Added Note 5 to Electrical Characteristics table 3 DESCRIPTION PAGES CHANGED Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits) shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance. 14 © Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 2011 Maxim Integrated Products Maxim is a registered trademark of Maxim Integrated Products, Inc.