cx28380 Mindspeed Technologies, cx28380 Datasheet - Page 3

• Manufacturer Part Number: cx28380
• Description: Cn8380 Quad T1/e1 Line Interface
• Manufacturer: Mindspeed Technologies

CX28398EVM Octal T1/E1 Evaluation Module
Detailed Feature Summary
Interface Compatibility
• T1.102–1993
• G.703 at 1.544 or 2.048 Mbps
• ITU-T Recommendation I.431
Receive Line Interface
• External Termination
• Equalizer compensation for –20 dB
• +3 dB to –12 dB receiver sensitivity
Transmit Line Interface
• Pulse shapes for 0–655 feet, in 133 ft.
• External termination for improved return
• Line driver enable/disable for protection
• Output short circuit protection (for BABT
Jitter Attenuator Elastic Store
• Receive or transmit direction
• 8-, 16-, 32-, 64-, or 128-bit depth
• Manual centering
29380-DSH-001-B
GENERAL NOTE:
1. Contact a Mindspeed representative for EVM availability and price.
bridged monitor levels
steps (T1 DSX–1)
loss
switching
applications)
8380_002
Microprocessor
Control
CX28380 Quad T1/E1 LIU
Mindspeed Proprietary and Confidential
Mindspeed Technologies
Line Codes
• Bipolar alternate mark inversion line
• Optional zero code suppression:
Loopbacks
• Remote loopback towards line
• Local loopback towards system
Clock Rate Adapter
• Outputs jitter attenuated line rate clock
• CLAD output supports 14 output clock
• Programmable input timing reference:
• Subrate CLADI timing reference:
coding
– T1: B8ZS
– E1: HDB3
– With or without JAT
– Retains BPV transparency
– Analog line loopback
– Local digital loopback
– CLK1544 = 1,544 k (T1)
– CLK2048 = 2,048 k (E1)
frequencies:
8 kHz to 32,768 kHz
– Receive recovered clock from any
– Internal clock (REFCKI)
– CLADI
– Line rate
– References as low as 8 kHz
channel
Local PCM Highway (i.e., 2 @ 8192 kbps)
Eight RJ48C T1 or E1 Line Connections
÷
CX28398 Octal T1/E1 Framer
2
n
, n = 0 to 7
®
CX28380 Quad T1/E1 LIU
Host Serial Interface
• Compatible with existing framers
• Compatible with microprocessor serial
• Bit rates up to 8 Mbps
In-Service Performance Monitoring
• Transmit alarm detectors:
• Receive alarm detectors:
• Automatic and on-demand transmit
ports
– Loss of Transmit Clock (TLOC)
– Transmit Short Circuit (TSHORT)
– Loss of Signal (RLOS)
– Loss of Analog Input (RALOS)
– Bipolar/Line Code Violations
alarms:
– AIS following TLOC
– Automatic AIS clock switching
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