Rainbow-electronics AT73C246 Bedienungsanleitung PDF herunterladen (Seite 5)

11050A–PMAAC–07-Apr-10

AT73C246

4. Pin Description

Table 4-1. Pin Description

Pin Name I/O Pin Number Type Function

VBACKUP Output 1 Analog RTC supply

LED Output 2 Digital

Output for blinking led. Leave not

connected if a LED is not wired.

ANA0 Input 3 Analog Measurement input 0

ANA1 Input 4 Analog Measurement Input 1

ANA2 Input 5 Analog Measurement Input 2

ANA3 Input 6 Analog Measurement Input 3

VINSYS Input 7 Power PMU core supply

VDDC Output 8 Analog

PMU / Audio digital supply. Internal use

only. No resistive load.

VBG Output 9 Analog PMU Voltage reference

REXT Output 10 Analog

Resistor connection for PMU bias

current

GNDSYS GND 11 Analog PMU ground

VMID Output 12 Analog Audio Codec Mid-Supply reference

HPDET Input 13 Analog Headset detector

HPR Output 14 Analog Headset output right

HPVCM Output 15 Analog Headset virtual ground output

HPL Output 16 Analog Headset output left

AGND GND 17 Analog Audio Codec ground

AVDD Input 18 Power Audio Codec supply input

ITB Output 19 Digital

Interrupt request - Active low - Open-

drain

RSTB Output 20 Digital CPU reset - Active low - Open drain

TWD Input/Output 21 Digital Two Wire Interface - Data

TWCK Input 22 Digital Two Wire Interface - Clock

WAKEUP1 Input 23 Digital

Wake up 1 Input - VPAD level - 100k

Pull down

WAKEUP2 Input 24 Digital

Wake up 2 Input - VPAD level - 100k

Pull down

WAKEUP3 Input 25 Digital

Wake up 3 input - VPAD level - 100k

Pull down

NC - 26 - Connect to DGND

LINR Input 27 Analog Audio Line input right

LINL Input 28 Analog Audio Line input left

AUXR Input 29 Analog Audio auxiliary input right

AUXL Input 30 Analog Audio auxiliary input left

1 2 3 4 5 6 7 8 9 10 ... 158 159

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