LT6236 datasheet(37/50 Pages) LINER

37 / 50 page

LTC2372-16

237216f

For more information www.linear.com/LTC2372-16

TiMing DiagraMs

Figure 25. Using a Single LTC2372-16 without Programming the Sequencer

Single Device, Sequencer Not Programmed

RDL enables or disables the serial data I/O bus. If RDL is

high, the serial data I/O bus is disabled and the serial shift

clock SCK is ignored. If RDL is low, SDO is driven and

serial input data may be shifted in at SDI. Figure 25 shows

a single LTC2372-16 operated with RDL and RESET tied

to ground. With RDL grounded, the serial data I/O bus is

enabled and the MSB(D15) of the new conversion data

is available tDSDOBUSYL after the falling edge of BUSY.

The start-of-sequence (SOS) bit followed by the current

configuration is shifted out after the conversion data.

Bringing SDI low during data readback as shown closes

the sequencer programming window at the first rising

edge of SCK after the falling edge of BUSY since C[7] = 0.

As a result, the sequencer is not programmed.

CONVERT

DIGITAL HOST

IRQ

DATA IN

SDI

CLK

CNV

BUSY

SDO

SDI

SCK

RDL

RESET

LTC2372-16

CNV

RDL = 0

RESET = 0

NAP

ACQUIRE

HOLD

CONVERT

NAP

ACQUIRE

BUSY

tCNVH

tCONV

tBUSYLH

SCK

SDO

237216 F25

D15

D14

D13

SOS

tDSDO

tHSDO

tSCK

A[3] A[2] A[1]

A[0] R[1] R[0] SEL

SDI

tQUIET

tCNVL

tACQ

tACQ = tCYC – tHOLD

tCYC

tDSDOBUSYL

tSCKH

tSCKL

tHOLD

HOLD

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