MT9072AV ZARLINK [Zarlink Semiconductor Inc], MT9072AV Datasheet - Page 213

• Manufacturer Part Number: MT9072AV
• Description: Octal T1/E1/J1 Framer
• Manufacturer: ZARLINK [Zarlink Semiconductor Inc]

A (0), (1) or (#) in the “Name” column of these tables indicates the state of the data bits after a reset (RESET, RSTC
or RST). The (#) indicates that a (0) or (1) is possible.
17.2.12
Table 193 describes the bit functions of each (5 registers in total, one register for each bit position) of the Receive
National Bits Data Registers in the MT9072. Each register is repeated for each of the 8 framers. Framer 0 is
addressed with Y=0, Framer 1 with Y=1, Framer 2 with Y=2 and so on up to Framer 7 with Y=7 (where Y represents
the 4 most significant address bits (MSB) A11-A8). Each register contains one byte (8-bits) of data corresponding to
eight frames of a particular bit position in timeslot 0. There are 5 registers in total containing 5 bytes of data,
occupying addresses YC0 to YC4 Address YC0 corresponds to bit position 4 (RN0=Sa4) and address YC4
corresponding to bit position 8 (RN4=Sa8).
A (0), (1) or (#) in the “Name” column of these tables indicates the state of the data bits after a reset (RESET, RSTC
or RST). The (#) indicates that a (0) or (1) is possible.
15-8
15-8
Bit
Bit
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
RNnF13
RNnF15
RNnF11
RNnF1
RNnF3
RNnF5
RNnF7
RNnF9
TNnF13
TNnF15
TNnF11
Name
(####
####)
(0000
0000)
Receive National Bit RN Data Registers (YC0- YC4) Bit Functions
TNnF1
TNnF3
TNnF5
TNnF7
TNnF9
Name
(####
####)
(0000
0000)
Table 188 - Transmit National Bits (Sa4 - Sa8) TNn (n = 0 to 4) Data Register
not used.
Receive National Bit RNnFm (n = 0 to 4, m = 1, 3, 5 etc. to 15). This bit is received from
the PCM30 link, in bit position n+4 of Timeslot 0 during Frame m (non-frame alignment
signal (NFAS) frames) when CRC-4 multiframe alignment is used, or of consecutive odd
frames when CRC-4 multiframe alignment is not used.
Bit RNnFm is sourced to register address YCn as follows.
RN0Fm = Address YC0 corresponds to receive national bit Sa4Fm
RN1Fm = Address YC1 corresponds to receive national bit Sa5Fm
RN2Fm = Address YC2 corresponds to receive national bit Sa6Fm
RN3Fm = Address YC3 corresponds to receive national bit Sa7Fm
RN4Fm = Address YC4 corresponds to receive national bit Sa8Fm
not used.
Transmit National Bit TNnFm (n = 0 to 4, m = 1, 3, 5 etc. to 15). This bit is transmitted on
the PCM30 link, in bit position n+4 of Timeslot 0 during Frame m (non-frame alignment
signal (NFAS) frames) when CRC-4 multiframe alignment is used, or of consecutive odd
frames when CRC-4 multiframe alignment is not used.
Bit TNnFm is sourced from register address YFn as follows.
TN0Fm = Address YF8 corresponds to transmit national bits Sa4Fm
TN1Fm = Address YF9 corresponds to transmit national bits Sa5Fm
TN2Fm = Address YFA corresponds to transmit national bits Sa6Fm
TN3Fm = Address YFB corresponds to transmit national bits Sa7Fm
TN4Fm = Address YFC corresponds to transmit national bits Sa8Fm
(n = 0 to 4) Data Register (R/W Address YC0 to YC4) (E1)
Table 189 - Receive National Bits (Sa4 - Sa8) RNn
(R/W Address YB0 to YB4) (E1)
Zarlink Semiconductor Inc.
MT9072
213
Functional Description
Functional Description
Data Sheet