Dedicated Baud Rate Generator 3 (Brg3) - NEC UPD703116 User Manual

10.4.6 Dedicated baud rate generator 3 (BRG3)

(1) Configuration of baud rate generator 3 (BRG3)
The CSI0 and CSI1 serial clocks can be selected from the dedicated baud rate generator output or internal
system clock (f ).
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The serial clock source is specified with registers CSIC0 and CSIC1.
If dedicated baud rate generator output is specified, BRG3 is selected as the clock source.
Since the same serial clock can be shared for transmission and reception, baud rate is the same for the
transmission/reception.
Figure 10-34. Block Diagram of Baud Rate Generator 3 (BRG3)
f /4
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f /8
XX
f /16
XX
f /32
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BGCS1, BGCS0
Remark f : Internal system clock
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n = 0, 1
CHAPTER 10 SERIAL INTERFACE FUNCTION
8-bit timer counter
Match detector
PRSCM3
User's Manual U14492EJ5V0UD
1/2 CSIn
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