AK2548 Datasheet, PDF (1/30 Pages) Asahi Kasei Microsystems – 7 channel E1 Transceiver

ASAHI KASEI
[AK2548]
AK2548
7 channel E1 Transceiver
FEATURE
• 7ch E1 transceiver
• Jitter Tolerance: Compliant with ITU-T G.823, I.431
• Transmitter Pulse Shape: Compliant with ITU-T G.703
• Loss of Signal Detection: Compliant with ITU-T G.775
• Return loss: Compliant with ETS 300 166
• Selectable Signal Polarity
• Local/Remote Loopback
• Parallel/Serial Microprocessor Interface
• Single 3.3V±5% Operation
• Low Power Consumption
• Pin-to-pin compatible with AK2546(7 channel T1 transceiver) except serial interface
• Small Plastic Package 144pin LQFP
MCLK
CLKSEL
RESET
TEST1-4
P/S
BTS
RTIP1
RRING1
TTIP1
TRING1
CLKGEN
BLOCK DIAGRAM
CONTROL
TRANSCEIVER 1
LOS
RECOVER
SHAPER
R /W (WR)
AD7-AD0
AS(ALE)
DS(RD)
CS
SCLK
SDI
SDO
INT
LOS1
RCLK1
RPOS
RNEG1
TCLK1
TPOS
TNEG1
RTIP2-7
RRING2-7
TTIP2-7
TRING2-7
TRANSCEIVER 2-7
LOS2-7
RCLK2-7
RPOS2-7
RNEG2-7
TCLK2-7
TPOS2-7
TNEG2-7
7 Channel E1 Transceiver Block Diagram
C0028-E-00
1
1999/9