MT9174
2 Wire Full-Duplex 2B+D (80/160 Kbps) Data Format Digital Subscriber Network Interface Circuit (range up to 4 Km) with Loop Length Measurement Capability for Wireless Base Stations
Overview
| The MT9173 (DSIC) and MT9174 (DNIC) are functionally identical to the MT9171/72 except for the addition of one feature. The MT9173/74 include a digital output pin indicating the temporal position of the received SYNC bit of the biphase transmission. This feature is especially useful for systems such as PCS wireless base station applications requiring close synchronization between microcells. The MT9173 and MT9174 are identical except for the MT9173 having a shorter loop reach. The generic DNIC will be used to reference both devices unless otherwise noted. The MT9173/74 are fabricated in ISO 2 -CMOS process. |
Detailed Block Diagram
Typical Applications
- TDD Digital PCS (DECT, CT2, PHS) base stations requiring cell synchronization
- Digital subscriber lines
- High speed data transmission over twisted wires
- Digital PABX line cards and telephone sets
- 80 or 160 kbps single chip modem
Features & Benefits
- Receive sync output pulse
- Full duplex transmission over a single twisted pair
- Selectable 80 or 160 kbps line rate
- Adaptive echo cancellation
- Up to 3 km (9173) and 4 km (9174) loop reach
- ISDN compatible (2B+D) data format
- Transparent modem capability
- Frame synchronization and clock extraction
- Microsemi ST-BUS compatible
- Low power (typically 50 mW), single 5 V supply
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