MaxTech NXP-16 Manual de usuario descargar pdf (Pagina 6)

Product data sheet Rev. 04 — 17 March 2009 6 of 29

NXP Semiconductors

PCA9532

16-bit I

C-bus LED dimmer

6.2.1 Control register deﬁnition

6.3 Register descriptions

6.3.1 INPUT0 - Input register 0

The INPUT0 register reﬂects the state of the device pins (inputs 0 to 7). Writes to this

Remark: The default value ‘X’ is determined by the externally applied logic level (normally

logic 1) when used for directly driving LED with pull-up to V

6.3.2 INPUT1 - Input register 1

The INPUT1 register reﬂects the state of the device pins (inputs 8 to 15). Writes to this

Remark: The default value ‘X’ is determined by the externally applied logic level (normally

logic 1) when used for directly driving LED with pull-up to V

Table 3. Register summary

B3 B2 B1 B0 Symbol Access Description

0000INPUT0 read only input register 0

0001INPUT1 read only input register 1

0010PSC0 read/write frequency prescaler 0

0011PWM0 read/write PWM register 0

0100PSC1 read/write frequency prescaler 1

0101PWM1 read/write PWM register 1

0110LS0 read/write LED0 to LED3 selector

0111LS1 read/write LED4 to LED7 selector

1000LS2 read/write LED8 to LED11 selector

1001LS3 read/write LED12 to LED15 selector

Table 4. INPUT0 - Input register 0 description

Bit 7 6 5 4 3 2 1 0

Symbol LED7 LED6 LED5 LED4 LED3 LED2 LED1 LED0

Default XXXXXXXX

Table 5. INPUT1 - Input register 1 description

Bit 7 6 5 4 3 2 1 0

Symbol LED15 LED14 LED13 LED12 LED11 LED10 LED9 LED8

Default XXXXXXXX

1 2 3 4 5 6 7 8 9 10 11 ... 28 29

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MaxTech NXP-16 Manual de usuario Pagina 6