TI's AC 7 chipset is a two chip 16 port ADSL
infratructure chipset. It consists of the TNETD7160 16 port
multi-service ADSL Transceiver and the TNETD7122 (POTS) and TNETD7123
(ISDN) Dual
Channel Analog Front End (AFE), respectively.
TNETD7160 16 port multi-service ADSL
Transceiver
The TNETD7160 embeds an ARM7 processor for all real-time modem
operation and maintenance (OAM) control, extensively uses TI
programmable DSP capability for transceiver training and steady-state
functions, and includes all necessary program, data, interleaver
memory, and interprocessor communications paths to reduce
bill-of-materials costs. Each modem port can be configured dynamically
to support ADSL, ADSL2, ADSL2+ (up to 24 Mbps), extended reach and
enhanced upstream (up to 3.5 Mbps) with the same software load. Features
Single chip integrates all digital functions for 16
Asymmetric Digital Subscriber Line (ADSL) ATU-C modems including
digital section of the codec function
Supports:
16 ADSL modems
ANSI T1.413, Issue 2
ITU-T G.992.1 G.dmt (with s=1/2)
ITU-T G.992.2 G.lite
ITU-T G.992.3 G.dmt.bis (ADSL2 Annexes A, B, C)
ITU-T G.992.3 (Annex I, J) Enhanced Upstream
ITU-T G.992.3 (Annex L) Extended Reach
ITU-T G.992.4 G.lite.bis
ITU-T G.992.5 (ADSL2+ Annexes A, B, C)
ITU-T G.992.5 (Annex L) Enhanced Upstream
ITU-T G.994.1 G.hs
ITU-T G.997.1 G.ploam
ADSL2 Packet transfer mode (PTM)
Data interfaces include:
UTOPIA 2
Packet over Sonet (POS-PHY)
High-Speed Serial Data Distribution Port (LVDS)
Optional in-band management eliminates need for local
microcontroller
Glueless interface to TNETD7122 and TNETD7123 dual channel
AFE line interface
On chip:
ARM processor and memory
Interleaving memory compliant to all ANSI and ITU
standards
Two bit error rate tester (BERT) modules
OAM register interface compatible with AC5 and AC6
TNETD7122 (POTS) and TNETD7123 (ISDN) Dual
Channel Analog Front End (AFE)
The TNETD7122, used in plain old telephone service (POTS), and
TNETD7123, used in integrated services digital network (ISDN)
implementations, are dual low-power differential ADSL central-office
(CO) front ends containing line driver/receiver, codec, analog filters
and hybrid used in conjunction with the TNETD7160. These devices
feature active-termination drivers. The transmitter and receiver have
full-bandwidth access, allowing for SELT/DELT capability and line
characterization. The selectable integrated hybrid optimizes
performance over different loop impedances. Features
Designed for use with TNETD7160
Integrates codec functionality to reduce chip count