RS8953 Conexant Systems, Inc., RS8953 Datasheet - Page 137

• Manufacturer Part Number: RS8953
• Description: High-bit-rate Digital Subscriber Line (hdsl) Channel unit
• Manufacturer: Conexant Systems, Inc.

RS8953B/8953SPB
HDSL Channel Unit
4.16 PRA Transmit Write
Table 4-13. PRA Transmit Write Registers
SA4_MODE
SA5_MODE
SA6_MODE
SA7_MODE
N8953BDSB
0x70—PRA Transmit Control Register 0 (TX_PRA_CTRL0)
Address
0x70
0x71
0x72
0x73
0x74
7
E_MODE[1:0]
Controls the behavior of Sa4 bits transmitted towards the HDSL link, as follows:
Controls the behavior of Sa5 bits transmitted towards the HDSL link, as follows:
Controls the behavior of Sa6 bits transmitted towards the HDSL link, as follows:
check and E-bits, as follows:
NOTE:
Controls the behavior of Sa7 bits transmitted towards the HDSL link, as follows:
The Automatic mode operates based on the result of the receiver (HDSL to PCM) CRC
6
TX_PRA_TMSYNC_OFFSET
TX_BITS_BUFFO
TX_BITS_BUFF1
TX_PRA_CTRL0
TX_PRA_CTRL1
Register Label
MSB of Sa6 is transmitted first (i.e., in frames 1 and 9).
SA8_MODE
5
0 = Transparent
1 = From bits buffer 1
0 = Transparent
1 = From bits buffer 0
0 = Transparent
1 = From bits buffer 1
Received E-bits
1 (No Error)
1 (No Error)
Code
00
01
10
11
0 (Error)
0 (Error)
SA7_MODE
4
Conexant
Bits
8
7
6
8
8
Receive CRC Checks
3
SA6_MODE[1:0]
From bits buffer 0
Transparent
No Error
No Error
Automatic
Sa6 Bits
Error
Error
Illegal
PRA Transmit TMSYNC Offset Register
PRA Transmit Control Register 0
PRA Transmit Control Register 1
2
PRA Transmit Bits Buffer 1
PRA Transmit Bits Buffer 0
Name/Description
SA5_MODE
From bits buffer 0 (sec 0)
4.16 PRA Transmit Write
1
0011
0001
0010
Sa6
4.0 Registers
SA4_MODE
0
4-69