RS8953 Conexant Systems, Inc., RS8953 Datasheet - Page 12

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

xii
List of Figures
Figure 3-27.
Figure 4-1.
Figure 5-1.
Figure 5-2.
Figure 5-3.
Figure 5-4.
Figure 6-1.
Figure 6-2.
Figure 6-3.
Figure 6-4.
Figure 6-5.
Figure 6-6.
Figure 6-7.
Figure 6-8.
Figure 6-9.
An Overview of the PRA Transfer of Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-34
Transmit Routing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-41
RS8953B HDSL Channel Unit to Conexant HDSL Transceiver Interconnection . . . . . . . . . . 6-2
RS8953B HDSL Channel Unit to Bt8360 DS1 Framer Interconnection . . . . . . . . . . . . . . . . 6-3
RS8953B to 68302 Processor Interconnection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
RS8953B HDSL Channel Unit to 8051 Controller Interconnection . . . . . . . . . . . . . . . . . . . 6-5
Input Clock Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3
Input Setup and Hold Timing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3
Output Clock and Data Timing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-5
MPU Write Timing, MPUSEL = 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-8
MPU Read Timing, MPUSEL = 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-8
MPU Write Timing, MPUSEL = 0. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-9
MPU Read Timing, MPUSEL = 0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-9
68-Pin PLCC Package Drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-10
80–Pin PQFP Mechanical Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-11
Conexant
RS8953B/8953SPB
HDSL Channel Unit
N8953BDSB