STA321MPL View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

STA321MPL

Scalable digital microphone processor

STMicroelectronics 

STA321MP

Pin connections

Table 3. Pin description: VFQFPN-56 (STA321MP) (continued)

Pin

number

Type

Name

Description

20 Analog ground

GNDA

PLL ground

22 3.3-V capable TTL tristate 4 mA output buffer CKOUT

Clock output

25 3.3-V capable TTL 2 mA output buffer

OUT8B

PWM channel 8 output B

26 3.3-V capable TTL 2 mA output buffer

27 3.3-V capable TTL 2 mA output buffer

OUT8A

OUT7B

PWM channel 8 output A

PWM channel 7 output B

28 3.3-V capable TTL 2 mA output buffer

OUT7A

PWM channel 7 output A

29 3.3-V capable TTL 2 mA output buffer

OUT6B

PWM channel 6 output B

30 3.3-V capable TTL 2 mA output buffer

33 3.3-V capable TTL 2 mA output buffer

OUT6A

OUT5B

PWM channel 6 output A

PWM channel 5 output B

34 3.3-V capable TTL 2 mA output buffer

OUT5A

PWM channel 5 output A

35 3.3-V capable TTL 2 mA output buffer

OUT4B

PWM channel 4 output B

36 3.3-V capable TTL 2 mA output buffer

OUT4A

PWM channel 4 output A

37 3.3-V capable TTL 2 mA output buffer

38 3.3-V capable TTL 2 mA output buffer

OUT3B

OUT3A

PWM channel 3 output B

PWM channel 3 output A

41 3.3-V capable TTL 2 mA output buffer

OUT2B

PWM channel 2 output B

42 3.3-V capable TTL 2 mA output buffer

OUT2A

PWM channel 2 output A

43 3.3-V capable TTL 2 mA output buffer

OUT1B

PWM channel 1 output B

44 3.3-V capable TTL 2 mA output buffer

45 3.3-V capable TTL 4 mA output buffer

OUT1A

EAPD

PWM channel 1 output A

Ext. amp power-down

48 3.3-V capable TTL 2 mA output buffer

BICKO

Output serial clock

49 3.3-V capable TTL 2 mA output buffer

LRCKO

Output left/right clock

50 3.3-V capable TTL 2 mA output buffer

51 3.3-V capable TTL 2 mA output buffer

SDO_12

SDO_34

Output serial data channels 1 & 2

Output serial data channels 3 & 4

54 3.3-V capable TTL 2 mA output buffer

SDO_56

Output serial data channels 5 & 6

55 3.3-V capable TTL 2 mA output buffer

SDO_78

Output serial data channels 7 & 8

56 5-V tolerant TTL Schmitt trigger input buffer PWDN

Device power-down

3,11,21,

24,31, 3.3-V digital supply voltage

39,46,52

VDD3

3.3-V supply

2,4,12,

23,32, Digital ground

40,47,53

GND

Ground

Doc ID 022647 Rev 1

11/50

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