![background image](http://html.mh-extra.com/html/emerson/pm8560/pm8560_user-manual_101424053.webp)
Serial I/O:
Baud Rate Selection
10006609-03
Pm8560
User’s Manual
5-3
Table 5-3:
Baud Rates for 33 MHz and 66 MHz Clocks
Baud Rate Generator Configuration
The Baud Rate Generator Configuration (BRGCx) registers can be written at any time with
no need to disable the SMCs or external devices that are connected to the BRG. Configura-
tion changes occur at the end of the next BRG clock cycle. Although the BRGC can be
changed on-the-fly, two changes should not occur within a time equal to two source clock
periods. BRGC5-8 registers start at physical address space FDF9,15F0
16
and BRGC1-4 regis-
ters start at physical address space FDF9,19F0
16
. For more detailed information on these
registers, refer to the
MPC8560
PowerQuicc III Integrated Communications Processor Reference
Manual
.
BRG Clock Divider Value
Baud Rate:
1
1. The EIA-232C specification defines a maximum rate of 20,000 bits per second over a typical 50-foot
cable (2,500 picofarads maximum load capacitance). Higher baud rates are possible, but successful
operation depends specifically upon the application, cable length, and overall signal quality
Decimal:
Hex:
Actual Frequency (Hz):
% Error:
2400
3472
D90
2399
.03
4800
1736
6C8
4797
.06
9600
868
364
9589
.12
14400
579
243
14375
.17
19200
434
1B2
19156
.23
38400
217
0D9
38224
.46
57600
145
091
57205
.69
115200
72
048
113629
1.36
Summary of Contents for Pm8560
Page 8: ...Contents continued Pm8560 User s Manual 10006609 03 vi ...
Page 10: ...Pm8560 User s Manual 10006609 03 viii blank page ...
Page 12: ...Pm8560 User s Manual 10006609 03 x blank page ...
Page 14: ...Pm8560 User s Manual 10006609 03 ii blank page ...
Page 36: ...Setup Troubleshooting Pm8560 User s Manual 10006609 03 2 12 ...
Page 54: ...Serial I O Baud Rate Selection Pm8560 User s Manual 10006609 03 5 4 ...
Page 62: ...TDM Interface Rear Panel I O Connector P14 Pm8560 User s Manual 10006609 03 6 8 ...
Page 72: ...PCI Bus Interface PMC Connector Pin Assignments Pm8560 User s Manual 10006609 03 7 10 ...
Page 112: ...Development Mezzanine Card Troubleshooting Pm8560 User s Manual 10006609 03 10 12 ...
Page 138: ...Monitor Download Formats Pm8560 User s Manual 10006609 03 11 26 ...
Page 144: ...Index continued Pm8560 User s Manual 10006609 03 i 4 ...