xr82c684 Exar Corporation, xr82c684 Datasheet - Page 55

• Manufacturer Part Number: xr82c684
• Description: Cmos Quad Channel Uart Quart
• Manufacturer: Exar Corporation

XR82C684
Figure 28A. Block Diagram of the Portion of the QUART Timing Control Block Which Services
Channels C and D
Figure 28
Figure 28A
Please note that each “half” of the Timing Control
Block consists of a 16-bit Counter/Timer, a Baud Rate
Generator, a set of four external clock inputs and four 32:1
MUX’s. Each “half” of the Timing Control Block shares the
Table 15
output of the Oscillator Circuit.
Table 15
D.1 Oscillator Circuit:
Figure 29