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| 型號(hào)： | DSRT-L050-011 |
| 廠商： | CONEXANT SYSTEMS |
| 元件分類(lèi)： | 消費(fèi)家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, XMA |
| 文件頁(yè)數(shù)： | 17/76頁(yè) |
| 文件大?。?/td> | 632K |
| 代理商： | DSRT-L050-011 |
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RipTide LP Audio/Comm System Product Description
24
Conexant
1200
Conexant Proprietary Information
AMC Pin Signal Descriptions
System
Signal Name
Pin
I/O Type
Description
XTLI
6
Ix
Input from 24.576 MHz crystal circuit, or clock oscillator circuit.
XTLO
7
Ox
Output to 24.576 MHz crystal circuit, or NC if XTLI is connected to a clock oscillator.
POR
49
CAP
Power-On Reset. Connect to AGND through 1 uF.
AC-link Interface
Signal Name
Pin
I/O Type
Description
BIT_CLK
10
Oac
Bit Clock. 12.288 MHz AC-link bit clock. Connect to Controller BIT_CLK input.
SYNC
14
Iac
Frame Sync. 48 kHz fixed rate sample AC-link sync. Connect to Controller SYNC
output.
SDATA_IN
12
Oac
Serial Data Input. Serial, time division multiplexed, AC-link input data stream. Connect
to Controller SDATA_IN input.
SDATA_OUT
9
Iac
Serial Data Output. Serial, time division multiplexed, AC-link output stream. Connect
to Controller SDATA_OUT output.
RESET#
15
Iac
Reset. Active low reset input. Connect to Controller RESET# output.
Modem Telephone Line and Telephone Handset Digital Signals
Signal Name
Pin
I/O Type
Application Description
CID_INBIT
57
Ia
Caller ID Signal. Caller ID input data stream.
GPIO0/LINE1_OH#
2
Ot2
Line 1 Off-Hook Relay Control. Active low output used to control the normally open
off-hook relay. Connect to DAA #OH input.
GPIO1/IRING#
3
It
Ring Indicate. A low-going edge used to initiate presence of a ring frequency.
Typically connected to the output of an optoisolator or equivalent. The idle state (no
ringing) output of the ring detect circuit should be high. Connect to DAA IRING# output
and to +3.3V through 100 K
.
GPIO2/LINE1_CID#
4
Ot2
Line 1 Caller ID Relay Control. Active low output used to control the optional normally
open Caller ID relay which is used to connect CID_INBIT input to the telephone line
between first and second rings to receive the caller ID signal. Connect to DAA CID#
input.
GPIO3/LCS_L#/RH_L#
58
It
Line Current Sense/ Remote Hang-up. Active low input used to indicate hang-up of
the remote modem or telephone, i.e., the remote modem/telephone has released the
line (gone on-hook). Connect to DAA LCS_L#/RH_L# output and to +3.3V through
100 K
.
GPIO4/EXT_L#
59
It
Extension Off-Hook. Active low input used to indicate the telephone line is in use.
Connect to DAA EXT_L# output and to +3.3V through 100 K
.
GPIO5/VOICE#
60
Ot2
Voice Relay Control. Active low output used to control the Voice relay. When inactive.
(Default.), the handset is connected to the line. When active, the handset is
disconnected from the line and connected to a DC supply on the application board and
the handset is connected to the Codec for voice record and playback. Connect to DAA
VOICE# input.
GPIO6/LCS_H#
61
It
Line Current Sense Handset. Active low input used to indicate local modem handset
off-hook status and to detect remote hang-up. Connect to DAA VOICE# INPUT and to
+3.3V through 100 K
.
GPIO7/RINGWAKE#
62
It
RingWake. Active low input used to indicate that a valid ring signal has been detected.
When RINGWAKE# is asserted, the PME# output is asserted. Used for Caller ID
support.
GPIO8
63
It
General Purpose Input/Out. Reserved.
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