Rainbow Electronics MAX13362 - Manual (Page 11)

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).
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.
The default configuration after power-on is LH_ = 0,
ground 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.
MAX13362
24-Channel Automotive Switch Monitor
______________________________________________________________________________________ 11
P3 P2 P1 P0 POLLING TIME (ms)
0 0 0 0 Continuous*
0 0 0 1 4.096
0 0 1 0 4.096
0 0 1 1 4.096
0 1 0 0 4.096
0 1 0 1 4.096
0 1 1 0 8.192
0 1 1 1 16.384
1 0 0 0 32.768
1 0 0 1 65.536
1 0 1 0 131
1 0 1 1 262.1
1 1 0 0 524.3
1 1 0 1 1049
1 1 1 0 2097
1 1 1 1 4194
Table 3. Polling Time Setting
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.
0
W22.
0
W21
.0
W20
.0
W19
.0
W18
.0
W17
.0
W16.
0
W15
.0
W14
.0
W13
.0
W12
.0
W11
.0
W10
.0
W9.
0
W8.
0
W7.
0
W6.
0
W5.
0
W4.
0
W3.
0
W2.
0
W1.
0
W0.
0
X 0 0
X P3 P2 P1 P0
W23.
1
W22.
1
W21
.1
W20
.1
W19
.1
W18
.1
W17
.1
W16.
1
W15
.1
W14
.1
W13
.1
W12
.1
W11
.1
W10
.1
W9.
1
W8.
1
W7.
1
W6.
1
W5.
1
W4.
1
W3.
1
W2.
1
W1.
1
W0.
1
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) 1 1
Table 2. Command Register Map
* Default POR Value.
* Default POR value.
Table 4. Polling-Active Time Setting
PA2 PA1 PA0 POLLING ACTIVE TIME (µs)
0 0 0 64
0 0 1 128
0 1 0 256
0 1 1 512*
1 0 0 1024
1 0 1 2048
1 1 0 4096
1 1 1 4096