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Layer 1 is the transmission method of Ping-Pong type which is AMI encoded. “SYNC/MAM/C/D/B1/B2/
P” data is received in the first half at 125us/frame. After 1 bit time has passed since receiving P data,
“SYNC/MAM/C/D/B1/B2/P” is transmitted. 1 bit time is 512kHz. 7-bit time idle term comes after
receiving P data.
6) PCM interface (between IC1 and IC2)
PCM interface consists of following 4 terminals.
The first PCM data is output from TXD at the positive edge of -FSYNC. The second data and the
followings are output at the positive edge of BCLK. After all data of 8 bit are output, the last data is
kept until the positive edge of next -FSYNC. The positive edge of BCLK should be within ±100ns from
the positive edge of -FSYNC.
The PCM data input from RXD is sampled at the negative edge of BCLK inside LSI. The sampling of
the first data is performed between the positive edge of -FSYNC and the first negative edge of BCLK.
After completing the sampling of all data of 8 bit, this sampling pauses until the next positive edge of -
FSYNC.
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Summary of Contents for KX-T7453
Page 7: ...5 IC DATA 5 1 IC1 7 ...
Page 10: ...10 ...
Page 15: ...15 ...
Page 21: ...The reset signal is negledted 21 ...
Page 26: ...8 2 THE LCD DOES NOT OPERATE 26 ...
Page 28: ...8 5 SPEAKER PHONE TROUBLE 8 6 TONE DIAL TROUBLE 8 7 HANDSET TROUBLE 28 ...
Page 29: ...9 TERMINAL GUIDE OF ICS TRANSISTORS AND DIODES 29 ...
Page 33: ...13 ACCESSORIES AND PACKING MATERIALS 33 ...
Page 39: ... 39 ...
Page 41: ...41 ...
Page 43: ...43 ...
Page 48: ...1 5 2 6 3 7 4 8 ...
Page 49: ...9 13 10 14 11 15 12 16 ...
Page 50: ...17 21 18 22 19 23 20 24 ...
Page 51: ...33 34 35 36 25 32 ...
Page 57: ...SW301 CN301 1 2 3 ...