參數(shù)資料
型號： AN1500A
廠商： SAMES
英文描述： SINGLE CHIP TELEPHONE DEMO BOARD
中文描述： 單芯片電話演示板
文件頁數(shù)： 2/27頁
文件大?。?/td> 623K
代理商： AN1500A
AN1500A
sames
2/27
TABLE OF CONTENTS
1
2
3
4
5
6
7
SCOPE................................................................................................................................................................. 1
KEY FEATURES ................................................................................................................................................. 1
OTHER APPLICABLE DOCUMENTS AND PAPERS........................................................................................ 4
REVISION STATUS............................................................................................................................................. 4
SA2532K PIN LAYOUT ...................................................................................................................................... 4
GENERAL DESCRIPTION.................................................................................................................................. 5
DEMO BOARD CONFIGURATION..................................................................................................................... 5
7.1
S
ETTING A
/
B LINE CONNECTION
........................................................................................................................ 6
7.2
C
ONNECTING A HANDSET
................................................................................................................................ 6
7.3
S
ETTING DIALING MODE
................................................................................................................................... 6
7.4
S
ETTING LINE LOSS COMPENSATION
(AGC)...................................................................................................... 6
7.5
AC
IMPEDANCE
............................................................................................................................................... 6
DESCRIPTION OF KEYBOARD FUNCTIONS................................................................................................... 7
8.1
N
UMERIC KEYS
............................................................................................................................................... 7
8.2
F
LASH KEYS
(R,R2)........................................................................................................................................ 7
8.3
L
AST NUMBER REDIAL KEY
(LNR) .................................................................................................................... 7
8.4
P
AUSE KEY
(PAUSE)...................................................................................................................................... 7
8.5
T
ONE
/ P
ULSE SWITCHING
............................................................................................................................... 7
8.6
E
NTER
/M5...................................................................................................................................................... 7
USING THE SA2532K......................................................................................................................................... 8
SLIDING CURSOR PROTOCOL AND PAUSE INSERTION.......................................................................... 9
AC IMPEDANCE OF THE SA2532K............................................................................................................... 9
11.1
D
EMO BOARD MEASUREMENTS
: ....................................................................................................................... 9
11.1.1
Definition:............................................................................................................................................... 9
11.1.2
Measurement:...................................................................................................................................... 10
12
SIDETONE CANCELLATION........................................................................................................................ 10
12.1
D
UAL
S
OFT CLIPPING
: ................................................................................................................................... 11
12.2
S
IDE TONE BALANCE NETWORK
:..................................................................................................................... 11
12.3
E
XAMPLE
:..................................................................................................................................................... 11
13
THE DOUBLE WHEATSTONE PRINCIPLE ................................................................................................. 11
13.1
S
IDETONE CANCELLATION
.............................................................................................................................. 12
13.2
AC
IMPEDANCE
............................................................................................................................................. 12
14
FURTHER ADJUSTMENTS .......................................................................................................................... 13
14.1
F
REQUENCY RESPONSE SHAPING
: T
RANSMIT
................................................................................................. 13
14.1.1
Microphone gain setting....................................................................................................................... 13
14.1.2
Tx frequency shaping: ......................................................................................................................... 13
14.2
F
REQUENCY RESPONSE SHAPING
: R
ECEIVE
................................................................................................... 14
14.2.1
Receive gain setting: ........................................................................................................................... 14
14.2.2
Rx frequency shaping.......................................................................................................................... 14
14.2.3
Metering pulses filtering....................................................................................................................... 14
15
OFF-HOOK CONDITIONS & DC MASK...................................................................................................... 15
15.1
L
INE CURRENT PATH
...................................................................................................................................... 15
15.2
DC
MASK PATH
............................................................................................................................................. 15
15.2.1
Setting for low DC mask:..................................................................................................................... 15
15.3
S
PEECH MODE
.............................................................................................................................................. 16
15.4
DTMF
DIALING
............................................................................................................................................. 16
15.5
P
ULSE DIALING
.............................................................................................................................................. 16
15.6
P
RE
-
DIGIT
, I
NTER
-
DIGIT
,
INTER
-
TONE AND ACCESS PAUSES
............................................................................ 17
16
HOOK TRANSISTOR OPTIONS................................................................................................................... 17
8
9
10
11
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