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1. Cover the plastic parts boxes with aluminum foil.
2. Ground the soldering irons.
3. Use a conductive mat on the worktable.
4. Do not touch IC or LSI pins with bare fingers.
3. GENERAL DESCRIPTION
This card, which is used in the free slot of the TDA system, can randomly connect eight of SLT,
DPT, and APT. In DPT connection, the XDP function allows SLT to be connected to each port in
parallel.It is comprised of CPU that is SH-1 (SH7020), 8Mbit flash ROM, and 2Mbit SRAM. The
software updates can be downloaded.
4. SPECIFICATION
Functional Block
Extension Interface
Number of Ports
8 ports
PT Interface
+40V/+15V Overcurrent protective function, Voltage
switching function Inter-APT communications
D (Upward: 0.25kbps, Downward: 0.69kbps)
2W Ping-pong transmission system (31.25kbps)
Inter-DPT communications, Inter-CS (TDA0141)
communications (from ver.1.1)
2B+D (144kbps) 2W Ping-pong transmission system
(512kbps)
Dch-control HDLC embeds eight channels in ASIC.
Surge protective function
SLT Interface
+30V 30mA Feeding function
Dial-pulse signal detecting function
DTMF signal detecting function
Bell signal issuing function
Hook detecting function
Ringtrip detecting function
2W/4W converting function
Surge protective function
Infineon-manufactured 4ch codec function
CODEC function
Test function (Loop back, Tone generation)
Programmable digital filtering function
Serial interface function
PIO function
5
Functional contents
/A Iaw switching function
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