mt9074ap1 Zarlink Semiconductor, mt9074ap1 Datasheet - Page 71

• Manufacturer Part Number: mt9074ap1
• Description: T1/e1/j1 Single Chip Transceiver With Wide Dynamic Range Liu
• Manufacturer: Zarlink Semiconductor

6 - 4
2-0
Bit
7
3
RES2-0
REDBL
TXL2-0
Name
NRZ
Table 36 - LIU Control Word (T1)
NRZ Format Selection. Only used in the digital framer only mode
(LIU is disabled). A one sets the MT9074 to accept a unipolar NRZ
format input stream on RxA as the line input, and to transmit a
unipolar NRZ format stream on TxB. A zero causes the MT9074 to
accept a complementary pair of dual rail inputs on RxA/RxB and to
transmit a complementary pair of dual rail outputs on TxA/TxB.
Transmit Line Build Out 2 - 0. Setting these bits shapes the
transmit pulse as detailed in the table below:
TX22 TXL1 TXL0 Line Build Out
After reset these bits are zero.
Receive Equalizer Disable. If one the receive equalizer is turned
off. If zero, the receive equalizer is turned on and will compensate
for loop length automatically.
Receive Equalization Select. Setting these pins forces a level of
equalization of the incoming line data.
RES2 RES1 RES0 Receive Equalization
These settings have no effect if REDBL is set to zero.
(Page 1, Address 1FH)
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
Zarlink Semiconductor Inc.
MT9074
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
71
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0 to 133 feet/ 0 dB
133 to 266 feet
266 to 399 feet
399 to 533 feet
533 to 655 feet
-7.5 dB
-15 dB
-22.5 dB
0 ÷ 10 dB
10 ÷ 18 dB
18 ÷ 25 dB
25 ÷ 30 dB
>30 dB
reserved
reserved
reserved
Functional Description
Data Sheet