CN8478 Datasheet, PDF (209/221 Pages) Conexant Systems, Inc – Multichannel Synchronous Communications Controller (MUSYCC)

CN8478/CN8474A/CN8472A/CN8471A
Multichannel Synchronous Communications Controller (MUSYCC™)
8.0 Terms, Definitions, and Conventions
8.3 Bit Stream Transmission Convention
8.3 Bit Stream Transmission Convention
Digitized voice transmission represented by octets (8-bit fields) generally
numbers bits left to right, 0–7, respectively. Data is transmitted serially starting at
the most significant bit (left-most bit, numbered bit 0) and proceeding to the
right-most bit (least significant bit, numbered bit 8) of the sample. The receiver
receives the most significant bit first. Table 8-2 illustrates this sequence.
Table 8-2. Digitized Voice Transmission Convention
Bit
0 (MSB)
1
Data
Transmission Order
1
0
MSB is transmitted first
2
3
4
5
1
0
1
1
Bit Stream = 10101111......
6
7 (LSB)
1
1
Digital data transmission uses n-bit words and generally numbers bits right to
left, 0 to [n-1], respectively. Data is transmitted serially starting with the least
significant bit (right-most bit or bit 0) and proceeding to the most significant bit
(left-most bit or bit [n – 1]). The receiver receives the least significant bit first.
Table 8-3 illustrates this sequence.
Table 8-3. Digital Data Transmission Convention
Bit
7 (MSB)
6
Data
Transmission Order
1
0
LSB is transmitted first
5
4
3
2
1
0
1
1
Bit Stream = 11110101......
1
0 (LSB)
1
1
MUSYCC employs the digital data transmission convention. MUSYCC
extensively uses 32-bit wide dwords or double-words data transfers. The data is
transmitted and received as listed in Table 8-4.
Table 8-4. MUSYCC Byte Transmission Convention
3
2
1
0
Byte
MSB
LSB
Bits 7 <- 0
Bits 7 <- 0
Transmission and
Reception Order
Byte Stream = Byte 0, Byte 1, Byte 2, Byte 3......
100660E
Conexant
8-3