YTD436 Datasheet, PDF (2/14 Pages) YAMAHA CORPORATION – ISTC ISDN BRI controller with S/T ref. pt. analog D/R

Features
1. Layer 1 function
• Conforms to ITU-T Recommendation I.430 (1992 edition) and
TTC Standard JT-I430 (1997 edition) (default)
- 192 kbps transmission rate
- Interface structure : 2B + D (B = 64 kbps, D = 16 kbps)
- Frame assembling and disassembling function
- Collision control (built-in random number (Ri) reset),
priority control (built-in retransmission control), and state transition control
- Programmable T3 and T4 timers
• Supports ETSI ETS 300 012 (April 1992) and ANSI T1.605 operating modes
• Leased line capability (JT-I430-a)
• Built-in driver and receiver
- I.430 TTL interface (when the driver / receiver is disconnected)
- No external relay or common-mode choke needed
- Supports 1-to-2 pulse transformer
• Abundant Test functions (for testing and maintenance)
- Demo mode in which no switch simulator is needed.
- Three kinds of loop-back modes (Loop-back 1 to 3)
- INFO signals output for testing
- Test pulse output for pulse shape check
• Multiframing capability
• INFO1 transmission and INFO4 reception monitor pins
• Power down monitor pin
• I.430 transmission frame phase adjustment function
2. Layer 2 function
• Conforms to ITU-T Recommendation Q.920 (1992 edition) and Q.921 (1997 edition)
and TTC Standard JT-Q920 (1993 edition) and JT-Q921 (1998 edition)
- HDLC frame control (Flag control, FCS generation/checking,
Automatic zero insertion/deletion, Abort pattern transmission/detection, etc.)
- LAPD status control (Sequence control, Flow control, SAPI control)
- Built-in timer for time-out check
• Supports ETSI ETS 300 125 (September 1991), National ISDN-1/2,
AT&T 5ESS 5E9 and Nortel DMS-100 S208-6 operating modes
• Multilink capability
(circuit switching × 2 links, packet switching/teleaction communications × 2 links)
• Automatic assigned TEI/non-automatic assigned TEI (VC/PVC)
• Leased line mode (disable layer 2 function)
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