PI7C9X7952
PCI Express Dual UART
Datasheet
Page 8 of 68
May 2013 – Revision 1.4
Pericom Semiconductor
Table of Tables
TABLE 4-1 PIN-LIST OF 128-PIN LQFP...........................................................................................................11
TABLE 5-1 MODE SELECTION .........................................................................................................................18
TABLE 5-2 BAUD RATE GENERATOR SETTING ................................................................................................23
TABLE 5-3 SAMPLE BAUD RATE SETTING.......................................................................................................23
TABLE 7-1 UART BASE ADDRESS IN I/O MODE.............................................................................................42
TABLE 7-2 REGISTERS IN I/O MODE ...............................................................................................................43
TABLE 7-3 UART BASE ADDRESS IN MEMORY MODE....................................................................................49
TABLE 7-4 MEMORY-MAP MODE ....................................................................................................................50
TABLE 9-1 ABSOLUTE MAXIMUM RATINGS .....................................................................................................63
TABLE 9-2 DC ELECTRICAL CHARACTERISTICS ..............................................................................................63
TABLE 9-3 TRANSMITTER CHARACTERISTICS.................................................................................................63
TABLE 9-4 RECEIVER CHARACTERISTICS .......................................................................................................64
TABLE 10-1 INPUT CLOCK REQUIREMENTS ....................................................................................................66
List of Figures
FIGURE 3-1 PI7C9X7952 BLOCK DIAGRAM...................................................................................................10
FIGURE 5-1 TRANSMIT AND RECEIVE FIFOS ..................................................................................................19
FIGURE 5-2 INTERNAL LOOPBACK IN PI7C9X7952........................................................................................21
FIGURE 5-3 CRYSTAL OSCILLATOR AS THE CLOCK SOURCE ...........................................................................22
FIGURE 5-4 EXTERNAL CLOCK SOURCE AS THE CLOCK SOURCE....................................................................22
FIGURE 7-1 UART REGISTER BLOCK ARRANGEMENT IN I/O MODE ..............................................................42
FIGURE 7-2 UART REGISTER BLOCK ARRANGEMENT IN MEMORY MODE .....................................................49
FIGURE 11-1 PACKAGE OUTLINE DRAWING.....................................................................................................67
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