6.6 Register Maps

Table 6-1. LP3943 Register Table

Address (Hex)

Register Name

Read/Write

Register Function

0x00

Input 1

Read Only

LED0–7 Input Register

0x01

Input 2

Read Only

LED8–15 Input Register

0x02

PSC0

R/W

Frequency Prescaler 0

0x03

PWM0

R/W

PWM Register 0

0x04

PSC1

R/W

Frequency Prescaler 1

0x05

PWM1

R/W

PWM Register 1

0x06

LS0

R/W

LED0–3 Selector

0x07

LS1

R/W

LED4–7 Selector

0x08

LS2

R/W

LED8–11 Selector

0x09

LS3

R/W

LED12–15 Selector

6.6.1 Binary Format for Input Registers (Read-only)—Address 0x00 and 0x01

Table 6-2. Address 0x00

Bit #

7

6

5

4

3

2

1

0

Default value

X

X

X

X

X

X

X

X

LED7

LED6

LED5

LED4

LED3

LED2

LED1

LED0

Table 6-3. Address 0x01

Bit #

7

6

5

4

3

2

1

0

Default value

X

X

X

X

X

X

X

X

LED15

LED14

LED13

LED12

LED11

LED10

LED9

LED8

6.6.2 Binary Format for Frequency Prescaler and PWM Registers — Address 0x02 to 0x05

Table 6-4. Address 0x02 (PSC0)

Bit #

7

6

5

4

3

2

1

0

Default value

0

0

0

0

0

0

0

0

Table 6-5. Address 0x03 (PWM0)

Bit #

7

6

5

4

3

2

1

0

Default value

1

0

0

0

0

0

0

0

Table 6-6. Address 0x04 (PSC1)

Bit #

7

6

5

4

3

2

1

0

Default value

0

0

0

0

0

0

0

0

Table 6-7. Address 0x05 (PWM1)

Bit #

7

6

5

4

3

2

1

0

Default value

1

0

0

0

0

0

0

0

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LP3943

SNVS256E – NOVEMBER 2003 – REVISED OCTOBER 2024

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