T7115AMCD LSI, T7115AMCD Datasheet - Page 18
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T7115AMCD
Manufacturer Part Number
T7115AMCD
Description
Manufacturer
LSI
Datasheet
1.T7115AMCD.pdf
(68 pages)
Specifications of T7115AMCD
Package Type
PLCC
Lead Free Status / Rohs Status
Not Compliant
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T7121 HDLC Interface for ISDN (HIFI-64)
Functional Description
Note: abcdefgh are not the same as ABCDEFGH due to HDLC processing.
18
TLBIT = 0
(TRANSMIT MSB FIRST)
RLBIT = 0
(RECEIVE MSB FIRST)
BIT 7
BIT 7
MSB
MSB
DIRECTION OF RECEPTION
TRANSMIT FIFO
RECEIVE FIFO
a b c d e f g h
a b c d e f g h
BIT 0
BIT 0
LSB
LSB
PROCESSES LSB FIRST
EXPECTS LSB FIRST
TRANSMITTER HDLC
(R13) TRANSMITTER BIT MASK
RECEIVER HDLC
(R12) RECEIVER BIT MASK
RBM7
TBM7
(continued)
HDLC
HDLC
Figure 9. 16 kbits/s Operation, MSB First
11000000
11000000
RBM0
TBM0
D
B
G
E
C
A
H
F
D
C
B
G
E
A
H
F
ARE IGNORED BY THE RECEIVER.
FIRST BIT RECEIVED
DIRECTION OF TRANSMISSION
*X = DON'T CARE. THESE BITS
G H X X X X X X*
A B X X X X X X
C D X X X X X X
E F X X X X X X
TIME-SLOT DATA
TIME-SLOT DATA
3 3 3 3 3 3* H G
3 3 3 3 3 3 B A
3 3 3 3 3 3 F E
3 3 3 3 3 3 D C
*3 = 3-STATE.
Lucent Technologies Inc.
FIRST BIT
TRANSMITTED
4TH TIME SLOT
4TH TIME SLOT
1ST TIME SLOT
2ND TIME SLOT
3RD TIME SLOT
1ST TIME SLOT
2ND TIME SLOT
3RD TIME SLOT
Data Sheet
April 1997
5-5035
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