STA321MPL Просмотр технического описания (PDF) - STMicroelectronics

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производитель

STA321MPL

Scalable digital microphone processor

STMicroelectronics 

Pin connections

STA321MP

Table 2. Pin description: TQFP-64 (STA321MPL) (continued)

Pin

number

Type

Name

Description

51 3.3-V capable TTL 4 mA output buffer

EAPD

Ext. amp power-down

55 3.3-V capable TTL 2 mA output buffer

BICKO

Output serial clock

56 3.3-V capable TTL 2 mA output buffer

LRCKO

Output left/right clock

57 3.3-V capable TTL 2 mA output buffer

58 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

62 3.3-V capable TTL 2 mA output buffer

SDO_56

Output serial data channels 5 & 6

63 3.3-V capable TTL 2 mA output buffer

SDO_78

Output serial data channels 7 & 8

64 5-V tolerant TTL Schmitt trigger input buffer

3,12,24,

28,35, 3.3-V digital supply voltage

44,52,59

PWDN

VDD3

Device power-down

3.3-V supply

2,4,13,

27,36, Digital ground

45,53,60

GND

Ground

14,17,26,

37, 46,

54,61,63

NC

Not connected

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

Pin

number

Type

Name

1

5-V tolerant TTL input buffer

PDM_CLK

5

5-V tolerant TTL input buffer

PDMIN_6

6

5-V tolerant TTL input buffer

PDMIN_5

7

5-V tolerant TTL input buffer

PDMIN_4

8

5-V tolerant TTL input buffer

9

5-V tolerant TTL input buffer

PDMIN_3

PDMIN_2

10 5-V tolerant TTL input buffer

PDMIN_1

13 5-V tolerant TTL Schmitt trigger input buffer RESET

14 CMOS input buffer with pull-down

PLLB

Bidirectional buffer: 5-V tolerant TTL Schmitt

15 trigger input; 3.3-V capable 2 mA slew-rate SDA

controlled output

16 5-V tolerant TTL Schmitt trigger input buffer SCL

17 5-V tolerant TTL Schmitt trigger input buffer XTI

18 Analog pad

19 3.3-V analog supply voltage

FILTER_PLL

VDDA

Description

PDM I/F CLK

PDM input channel 6

PDM input channel 5

PDM input channel 4

PDM input channel 3

PDM input channel 2

PDM input channel 1

Global reset

Bypass phase-locked loop

Serial data (I2C)

Serial clock (I2C)

Crystal oscillator input (clock input)

PLL filter

PLL supply

10/50

Doc ID 022647 Rev 1

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