Rainbow-electronics MAX13362 Manual de usuario descargar pdf (Pagina 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

P2 P1 P0

POLLING TIME (ms)

0 0 0 0 Continuous*

0001 4.096

0010 4.096

0011 4.096

0100 4.096

0101 4.096

0110 8.192

0 1 1 1 16.384

1 0 0 0 32.768

1 0 0 1 65.536

1010 131

1011 262.1

1100 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

PA2 PA1 PA0

W23.

W22.

W21

W20

W19

W18

W17

W16.

W15

W14

W13

W12

W11

W10

W9.

W8.

W7.

W6.

W5.

W4.

W3.

W2.

W1.

W0.

X00

P3 P2 P1 P0

W23.

W22.

W21

W20

W19

W18

W17

W16.

W15

W14

W13

W12

W11

W10

W9.

W8.

W7.

W6.

W5.

W4.

W3.

W2.

W1.

W0.

X01

LH2

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)

Table 2. Command Register Map

Default POR Value.

Default POR value.

Table 4. Polling-Active Time Setting

PA2

PA1 PA0

POLLING ACTIVE TIME (µs)

000 64

001 128

010 256

0 1 1 512*

1 0 0 1024

1 0 1 2048

1 1 0 4096

1 1 1 4096

1 2 ... 6 7 8 9 10 11 12 13 14

MAX13362 1

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Rainbow-electronics MAX13362 Manual de usuario Pagina 11

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