MAX9132/MAX9134/MAX9135
Interface Selection Using S[5:0]
(MAX9134/MAX9135)
S[5:0] determine which interface controls the
MAX9134/MAX9135. Leave S[5:0] unconnected or set
to a midlevel state to enable the LIN interface. Other
settings to S[5:0] set the switch routing according to
Tables 6a (MAX9134) and 6b (MAX9135). The I
2
C inter-
face is active when the MAX9132/MAX9134/MAX9135
are not in LIN interface mode. Writing to an I
2
C register
overrides the S[5:0] settings.
Interface Selection Using FS
(MAX9132 Only)
The FS input selects the interface for the MAX9132. Set
FS high for LIN interface control and FS low for I
2
C
interface. The MAX9132 powers up with all LVDS out-
puts unconnected for either mode.
Interfacing the
MAX9132/MAX9134/MAX9135
to the LIN Bus
The MAX9132/MAX9134/MAX9135 interface to the LIN
bus through the MAX13020 LIN transceivers. This
device translates the +12V to +42V LIN bus signal down
Programmable, High-Speed, Multiple
Input/Output LVDS Crossbar Switches
14 ______________________________________________________________________________________
PORT S5 S4 S3 S2 S1 S0 CONNECTION DESCRIPTION
0 DOUT0 connected to DIN0
Open DOUT0 connected to DIN1X
1 DOUT0 connected to DIN2
0 DOUT1 connected to DIN0
Open DOUT1 connected to DIN1
0X X X
1
X
DOUT1 connected to DIN2
Both DOUT0 and DOUT1
outputs are on
0 DOUT0 connected to DIN0
Open DOUT0 connected to DIN1
XX X 0
1 DOUT0 connected to DIN2
DOUT1 is not connected,
DOUT0 is on
0 DOUT1 connected to DIN0
Open DOUT1 connected to DIN1
1
X X X Open
1 DOUT1 connected to DIN2
DOUT0 is not connected,
DOUT1 is on
DOUT0,
DOUT1
1X X X 1 X
DOUT0 and DOUT1
in high impedance
Both DOUT0 and DOUT1
are not connected
0 DOUT2 connected to DIN0
Open DOUT2 connected to DIN1
X
1 DOUT2 connected to DIN2
0 DOUT3 connected to DIN0
Open DOUT3 connected to DIN1
X0
1
X
XX
DOUT3 connected to DIN2
Both DOUT2 and DOUT3
outputs are on
0 DOUT2 connected to DIN0
Open DOUT2 connected to DIN10
1
XX
DOUT2 connected to DIN2
DOUT3 is not connected,
DOUT2 is on
0 DOUT3 connected to DIN0
Open DOUT3 connected to DIN1
X1
Open
1
XX
DOUT3 connected to DIN2
DOUT2 is not connected,
DOUT3 is on
DOUT2,
DOUT3
X11XXX
DOUT2 and DOUT3
in high impedance
Both DOUT2 and DOUT3
are not connected
Table 6a. Switch Routing Control Pin Setting for the MAX9134
X = Don’t care.
(22 paginas)
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