IP568x
56K V.90 Modem Single Chip
Preliminary, Specification subject to change without notice
4
Tel: 886-2-26961080
IP568x-DS-P05, Nov, 2002
Fax: 886-2-26961085
Copyright@2002, IC ACE Corp.
Email: sales@icace.com.tw
PIN Description
Pin No.
Symbol
I/O
Description
14,15,24,47,82,99,
116,117,118
VDD3.3V
P
+3.3V power supply
2-7,9-11,16,20,22,23,
26-29,31,32,34,51,74
,110-112,114,120-123
,125-128
NC
These pins are for testing and must be floated in application.
Table 1. IP568x Pin Description
System Configuration
a. Power Down Mode
Host can instruct modem system to enter power down
mode by “AT*P” command. There are two ways to wake
µDSP.
(1)
Power off then power on modem
(2)
Negative pulse is occurred at input pins “RI\” of
IP568x
b. Re-flash Program Memory (Download New code)
By setting C0H.0 (reset state: 0), system can switch
program and data memory. If system uses FLASH
memory as program memory, we can use this function to
replace program code by loading download program to
data memory then swapping external data memory and
external program memory.
For example,
SETB
C0H,0
LJMP
0000H
In this modem system, modem provides a AT command
for download function. When users get new code and
want to upgrade current program code, the following
procedure can be used:
ATxxxx
(Issue Download command)
Ready
(Modem response “Ready”)
Send ASCII File (Choose send ASCII file in
communication software & send
new code to modem)
Wait moment
(download program)
.
.
(Waiting)
.
OK
(When download procedure is
complete, modem will response
OK.)
Note: When modem is in download mode, don’t turn off
power.
c. DAA (Data Access Arrangement) & NCU (network
Control Unit)
The modem chip provides standard serial interface for
Codec. IP568x can support traditional code plus
transformer-based NCU circuit and advance silicon DAA.
For further information, please contact technical
supporting engineer.
d. AT command
IP568x modem supports Data, Fax and Voice function.
All functions are controlled by AT command.
IC ACE will provide source code of AT command part
for customer modification. Please refer to the
document “ User’s Manual & AT command set”.
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