MAX13362 Datasheet, PDF (11/14 Pages) Maxim Integrated Products – 24-Channel Automotive Switch Monitor

24-Channel Automotive Switch Monitor
Command Register
Three 32-bit command registers are used to configure
the MAX13362 for various modes of operation and are
accessed by the SPI-compatible interface (see Table 2).
The default configuration after power-on is LH_ = 0,
ground connected.
Table 2. Command Register Map
D29 D28 D27 D26 D25 D24 D23 D22 D21 D20 D19 D18 D17 D16 D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 CB1 CB0
X
LP
PA2
PA1
PA0
W23. W22.
00
W21
.0
W20
.0
W19 W18
.0 .0
W17 W16. W15
.0 0 .0
W14
.0
W13 W12 W11
.0 .0 .0
W10
.0
W9.
0
W8.
0
W7.
0
W6. W5. W4.
000
W3.
0
W2. W1. W0.
000
X
0
0
X
P3
P2
P1
P0
W23. W22. W21 W20
1 1 .1 .1
W19 W18
.1 .1
W17 W16. W15
.1 1 .1
W14
.1
W13 W12 W11
.1 .1 .1
W10
.1
W9.
1
W8.
1
W7.
1
W6. W5. W4.
111
W3.
1
W2. W1. W0.
111
X
0
1
LH2
3
LH3
LH2
LH1 LH0 IE23 IE22 IE21 IE20 IE19 IE18 IE17 IE16 IE15 IE14 IE13 IE12 IE11 IE10
IE9
IE8
IE7
IE6
IE5 IE4
IE3
IE2
IE1 IE0
X
1
0
NO OPERATION (NO DATA WRITTEN)
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LH_: Switch Configuration for IN0–IN3 and IN23
The LH0–LH3 and LH23 bits set the switch configuration
for IN0–IN3 and IN23, respectively. Set LH_ to 0 to con-
figure the input channel to ground connected. Set LH_
to1 to configure the input channel to battery connected.
P0–P3: Polling Time
P0–P3 are used to set the polling time as shown in Table 3.
PA0–PA2: Polling Active Time
PA0–PA2 are used to set the polling active time as
shown in Table 4.
Table 3. Polling Time Setting
P3 P2 P1 P0
0
0
0
0
0
0
0
1
0
0
1
0
0
0
1
1
0
1
0
0
0
1
0
1
0
1
1
0
0
1
1
1
1
0
0
0
1
0
0
1
1
0
1
0
1
0
1
1
1
1
0
0
1
1
0
1
1
1
1
0
1
1
1
1
*Default POR value.
POLLING TIME (ms)
Continuous*
4.096
4.096
4.096
4.096
4.096
8.192
16.384
32.768
65.536
131
262.1
524.3
1049
2097
4194
Table 4. Polling-Active Time Setting
PA2 PA1 PA0
0
0
0
0
0
1
0
1
0
0
1
1
1
0
0
1
0
1
1
1
0
1
1
1
*Default POR Value.
POLLING ACTIVE TIME (µs)
64
128
256
512*
1024
2048
4096
4096
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