CS5376A datasheet(65/107 Pages) CIRRUS

65 / 107 page

CS5376A

Clock Delay - CDLY[2:0]

Programs a fractional delay for TBSCLK with a 1/8

clock period resolution.

Loopback - LOOP

Enables digital loopback from the TBS output to

the MDATA inputs.

Run - RUN

Enables the test bit stream generator.

Data Delay - DDLY[5:0]

Programs full period delays for TBSDATA, up to a

maximum of 63 bits.

Gain - TBSGAIN[23:0]

Scales the amplitude of the sine wave output and

generated impulse. Maximum 0x04FFFF, nominal

0x04B000.

17.4 TBS Data Source

Data to create test signals is loaded into digital fil-

ter memory by configuration commands. The on-

chip sine wave data is suitable for most tests,

though custom data is required to support custom

signal frequencies. See “EEPROM Configuration

Commands” on page 28 or “Microcontroller Con-

figuration Commands” on page 35 for information

about programming TBS data.

TBS ROM Data

An on-chip 24-bit 1024 point digital sine wave is

stored on the CS5376A. When selected by the

‘Write TBS ROM Data’ configuration command,

the TBS generator can produce the test signal fre-

quencies listed in Table 16. Additional discrete test

frequencies and output rates can be programmed

with the on-chip data by varying the interpolation

factor and output rate.

Test Bit Stream Characteristic Equation:

(Signal Freq) * (# TBS Data) * (Interpolation + 1) = Output Rate

Example: (31.25 Hz) * (1024) * (0x07 + 1) = 256 kHz

Signal

Frequency

(TBSDATA)

Output

Rate

(TBSCLK)

Output Rate

Selection

(RATE)

Interpolation

Selection

(INTP)

10.00 Hz

256 kHz

0x4

0x18

10.00 Hz

512 kHz

0x5

0x31

25.00 Hz

256 kHz

0x4

0x09

25.00 Hz

512 kHz

0x5

0x13

31.25 Hz

256 kHz

0x4

0x07

31.25 Hz

512 kHz

0x5

0x0F

50.00 Hz

256 kHz

0x4

0x04

50.00 Hz

512 kHz

0x5

0x09

125.00 Hz

256 kHz

0x4

0x01

125.00 Hz

512 kHz

0x5

0x03

Table 16. TBS Configurations Using On-chip Data

CS5376A bảng dữ liệu(PDF) 65 Page - Cirrus Logic

CS5376A bảng dữ liệu(HTML) 65 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 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

bảng dữ liệu tải về

Link URL