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KX-T7436C/KX-T7436C-B
5) IC1 (GATE ARRAY) DPITS Interface
DPITS Layer 1 interface. DR [1:0] is receiving input and DX [1:0] is transmitting output.
Layer 1 is the transmission method of Ping-Pong type which is AMI encoded. "SYNC/MAMC/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.
Data receive from PBX
Data transmission to PBX
Between Hand L
JK1(H-L)
JK1(H-L)
From Format
SYNC
Dch
B1 ch
B2 ch
MAM
SYNC
Dch
B1 ch
B2 ch
MAM
Parity
Parity
RXA
IC1
IC1
38
RXB
IC1
IC1
39
TXA
IC1
IC1
40
TXB
IC1
IC1
41
125us / frame
Receive
Transmit
Reception transmission switching term (1 bit time)
Idle
frame
SYNC
C D
B1
B2
P
MAM
DR0
DR1
DX0
DX1
SYNC
C D
B1
B2
P
MAM
Parity Bit
125us
Timing Chart for D-PITS Transmission
Dpits Frame Timing
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