CMX625P4 datasheet(23/34 Pages) CMLMICRO

tên linh kiện	CMX625P4

Giải thích chi tiết về linh kiện	ISDN TA POTS Interface

PDF	34 Pages

Scroll/Zoom	100%

nhà sản xuất	CMLMICRO [CML Microcircuits]

Trang chủ	http://www.cmlmicro.com

Logo

23 / 34 page

ISDN TA POTS Interface

CMX625

 2001 Consumer Microcircuits Limited

D/625/2

1.6

Application Notes

When using the Tone/FSK bit (bit 6) of the MODE Register, each tone starts from VBIAS, and

returns to VBIAS before ending:

Figure 10 Tone Starting and Stopping

When switching between tones in the same column (bits 4 - 7 or bits 0 - 3) of the TX TONES

immediately take the output of that tone generator to VBIAS.

Figure 11 Tone Changing

The TX TONES Register which does not have a frequency allocated is indicated by ‘-’ in the Tone

Field tables. These values should not be used.

1.6.1

Telecom Tones

The following tables give the hex codes to be programmed into the particular tone field location for

various telecommunications systems applications. The tables are not exhaustive, but list the more

commonly used tones.

Ringing Signals

(f ±2.5%)

Field 0

(Hz)

(Hex)

Off

$00

16.7

$01

$02

$03

$04

$05

$06

CMX625P4 bảng dữ liệu(PDF) 23 Page - CML Microcircuits