MAX12005ETM+T Maxim Integrated Products, MAX12005ETM+T Datasheet - Page 10

• Manufacturer Part Number: MAX12005ETM+T
• Description: RF Amplifier Integration of Two L ow-Noise GPS Amplifi
• Manufacturer: Maxim Integrated Products

Specifications of MAX12005ETM+T

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Table 1. DiSEqC Slave Control Interface
Note 1: The primary device outputs connect directly to the satellite receivers. The secondary device outputs connect to the primary
Note 2: Only those DiSEqC commands that differ between sequences have to be sent to change the input, not all four commands.
The DiSEqC interface is designed according to the DiSEqC Bus Functional Specification version 4.2.
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 com-
mand byte is the 3.byte in the DiSEqC master frame
(refer to the DiSEqC Bus Functional Specification ver-
sion 4.2, top of page 13). The DiSEqC slave only sends
10
Secondary
DEVICE
(Note 1)
Primary
device through the cascade inputs. Also see Figure 1.
By default RFIN1 from the primary device is selected.
INPUT
RFIN1
RFIN2
RFIN3
RFIN4
RFIN5
RFIN6
RFIN7
RFIN8
RFIN1
RFIN2
RFIN3
RFIN4
RFIN5
RFIN6
RFIN7
RFIN8
Satellite A, low band, vertical polarization
Satellite A, low band, horizontal polarization
Satellite A, high band, vertical polarization
Satellite A, high band, horizontal polarization
Satellite B, low band, vertical polarization
Satellite B, low band, horizontal polarization
Satellite B, high band, vertical polarization
Satellite B, high band, horizontal polarization
Satellite C, low band, vertical polarization
Satellite C, low band, horizontal polarization
Satellite C, high band, vertical polarization
Satellite C, high band, horizontal polarization
Satellite D, low band, vertical polarization
Satellite D, low band, horizontal polarization
Satellite D, high band, vertical polarization
Satellite D, high band, horizontal polarization
SIGNAL FROM
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.
0x23, 0x22, 0x20, 0x21
0x23, 0x22, 0x20, 0x25
0x23, 0x22, 0x24, 0x21
0x23, 0x22, 0x24, 0x25
0x23, 0x26, 0x20, 0x21
0x23, 0x26, 0x20, 0x25
0x23, 0x26, 0x24, 0x21
0x23, 0x26, 0x24, 0x25
0x27, 0x22, 0x20, 0x21
0x27, 0x22, 0x20, 0x25
0x27, 0x22, 0x24, 0x21
0x27, 0x22, 0x24, 0x25
0x27, 0x26, 0x20, 0x21
0x27, 0x26, 0x20, 0x25
0x27, 0x26, 0x24, 0x21
0x27, 0x26, 0x24, 0x25
DiSEqC COMMAND SEQUENCE
(Note 2)