ZSSC3123AI2 datasheet(31/63 Pages) IDT

31 / 63 page

ZSSC3123 Datasheet

January 26, 2016

3.5

Output Modes

The ZSSC3123 has four different output modes as shown in Table 3.7. See the corresponding reference sections for specifics

on each mode.

Table 3.7

Output Modes

Output Mode

Reference Sections

Section 3.6

Read only SPI

PDM

Section 3.7

Alarms

Section 3.8

As illustrated in the pin configuration in section 9, the output communication modes share pins. The Output_Selection bits in

EEPROM word ZMDI_Config (see section 5.1.1) select which of these outputs will be enabled. Table 3.8 shows the pin

configuration for the different output selections.

Table 3.8

Pin Assignment for Output Selections

Output Selection

2C™ (001

SPI (011B)

PDM_C (100B)

PDM_C+T (110B)

Pin 08

Alarm_ Low

Alarm_Low

PDM_T

Pin 09

Alarm_High

Pin 10

Ready

PDM_C

Pin 12

SDA

MISO

SDA

Pin 13

SCL

SCLK

SCL

Pin 14

No input

No Input

3.6

2C™ and SPI

Two wire I

2C™ and three-wire read-only SPI are available for fetching data from the ZSSC3123. I2C™ is used to send

calibration commands to ZSSC3123. To choose I

2C™ or SPI, set the corresponding Output_Selection Bits in EEPROM word

ZMDI_Config.

3.6.1

2C™ Features and Timing

The ZSSC3123 uses an I

2C™-compatible communication protocol‡‡ with support for 100kHz and 400kHz bit rates. The

ZSSC3123 I

2C™ slave address (00

H to 7FH) is selected by the Device_ID bits in the Cust_Config EEPROM word (see Table

5.5 for bit assignments). The device will respond only to this address if the communication lock is set by programming 011B in

the Comm_lock bits in the ZMDI_Config EEPROM word (see Table 5.2 for bit assignments); otherwise, the device will respond

to all I

2C™ addresses. The factory setting for the I2C™ slave address is 28

H with Comm_lock set.

See Figure 3.8 for the I

2C™ timing diagram and Table 3.9 for definitions of the parameters shown in the diagram.

‡‡ For details, refer to http://www.standardics.nxp.com/literature/books/i2c/pdf/i2c.bus.specification.pdf or other websites for this specification.

ZSSC3123AI2 Datasheet(PDF) 31 Page - Integrated Device Technology

ZSSC3123AI2 Datasheet(HTML) 31 Page - Integrated Device Technology

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63

Datasheet Download

Link URL