HD6417750RF240DV Datasheet, PDF (840/1132 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH™ RISC engine Family / SH7750 Series

Section 17 Smart Card Interface
SH7750, SH7750S, SH7750R Group
Table 17.4 Values of n and Corresponding CKS1 and CKS0 Settings
n
CKS1
CKS0
0
0
0
1
0
1
2
1
0
3
1
1
Table 17.5 Examples of Bit Rate B (bits/s) for Various SCBRR1 Settings (When n = 0)
Pck (MHz)
N
7.1424 10.00
10.7136 14.2848 25.0
0
9600.0 13440.9 14400.0 19200.0 33602.2
1
4800.0 6720.4 7200.0 9600.0 16801.1
2
3200.0 4480.3 4800.0 6400.0 11200.7
Note: Bit rates are rounded to one decimal place.
33.0
44354.8
22177.4
14784.9
50.0
67204.3
33602.2
22401.4
The method of calculating the value to be set in the bit rate register (SCBRR1) from the peripheral
module operating frequency and bit rate is shown below. Here, N is an integer in the range 0 ≤ N ≤
255, and the smaller error is specified.
N
=
1488
Pck
× 2²ⁿ
–
1
×
B
×
10⁶
–
1
Table 17.6 Examples of SCBRR1 Settings for Bit Rate B (bits/s) (When n = 0)
Bits/s
9600
7.1424
N Error
0 0.00
10.00
N Error
1 30.00
10.7136
N Error
1 25.00
Pck (MHz)
14.2848
25.00
N Error N Error
1 8.99 3 14.27
33.00
N Error
4 8.22
50.00
N Error
6 0.01
Page 788 of 1076
R01UH0456EJ0702 Rev. 7.02
Sep 24, 2013