CS5101A datasheet(16/40 Pages) CIRRUS

16 / 40 page

Output Mode Control

The CS5101A and CS5102A can be configured

in three different output modes, as well as an in-

ternal, synchronous loop-back mode. This allows

great flexibility for design into a wide variety of

systems. The operating mode is selected by set-

ting the states of the SCKMOD and OUTMOD

pins. In all modes, data is output on SDATA,

starting with the MSB. Each subsequent data bit

is updated on the falling edge of SCLK.

When SCKMOD is high, SCLK is an input, al-

lowing the data to be clocked out with an

external serial clock at rates up to 5 MHz. Addi-

tional clock edges after #16 will clock out logic

’1’s on SDATA. Tying SCKMOD low reconfig-

ures SCLK as an output, and the converter clocks

out each bit as it’s determined during the conver-

sion process, at a rate of 1/4 the master clock

speed. Table 2 shows an overview of the different

states of SCKMOD and OUTMOD, and the cor-

responding output modes.

Pipelined Data Transmission (PDT)

PDT mode is selected by tying both SCKMOD

and OUTMOD high. In PDT mode, the SCLK

pin is an input. Data is registered during conver-

sion, and output during the following conversion

cycle. HOLD must be brought low, initiating an-

other conversion, before data from the previous

conversion is available on SDATA. If all the data

has not been clocked out before the next falling

edge of HOLD, the old data will be lost

(Figure 3).

Figure 3. Pipelined Data Transmission Mode (PDT)

CLKIN (i)

HOLD (i)

Internal

Status

SCLK (i)

SDATA (o)

CH1/2 (i)

D15

D14

D1 D0 (Ch. 1)

TRK1 (o)

TRK2 (o)

SSH/SDL (o)

Converting Ch. 2

D15

D14

D0 (Ch. 2)

Converting Ch. 1

D15

6468

7276

Tracking Ch. 1

Tracking Ch. 2

SCLK

Input

Output

Input

Output

OUTMOD

SCKMOD

MODE

PDT

RBT

SSC

FRN

Input

Output

CH1/2

Input

HOLD

Table 2. Serial Output Modes

CS5101A CS5102A

DS45F2

CS5101A датащи(PDF) 16 Page - Cirrus Logic

CS5101A датащи(HTML) 16 Page - Cirrus Logic

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

датащи скачать

ссылки URL