Advertisement
Section 13 Serial Communication Interface (SCI)
Bit
Bit Name
3
BCP1
2
BCP0
1
CKS1
0
CKS0
Note:
* etu: Element Time Unit (time taken to transfer one bit)
Rev. 1.00 Mar. 12, 2008 Page 436 of 1178
REJ09B0403-0100
Initial
Value
R/W
Description
0
R/W
Basic Clock Pulse 1 and 0
0
R/W
These bits select the number of basic clock cycles in a 1-
bit data transfer time in smart card interface mode.
00: 32 clock cycles (S = 32)
01: 64 clock cycles (S = 64)
10: 372 clock cycles (S = 372)
11: 256 clock cycles (S = 256)
For details, see section 13.7.4, Receive Data Sampling
Timing and Reception Margin. S is described in section
13.3.9, Bit Rate Register (BRR).
0
R/W
Clock Select 1 and 0
0
R/W
These bits select the clock source for the baud rate
generator.
00: φ clock (n = 0)
01: φ/4 clock (n = 1)
10: φ/16 clock (n = 2)
11: φ/64 clock (n = 3)
For the relation between the bit rate register setting and
the baud rate, see section 13.3.9, Bit Rate Register
(BRR). n is the decimal display of the value of n in BRR
(see section 13.3.9, Bit Rate Register (BRR)).
Advertisement
