CHAPTER 19 IEBus CONTROLLER (V850/SB2)
User’s Manual U13850EJ6V0UD
583
(14) IEBus high-speed clock selection register (IEHCLK)
This register selects the clock of IEBus. The main clock frequencies that can be used are shown below.
Main clock frequencies other than the following cannot be used.
•
6.0 MHz/6.291 MHz
•
12.0 MHz/12.582 MHz
•
18.0 MHz/18.873 MHz
Caution
The IEHCLK register is available only in the H versions of the V850/SB2 (
µµµµ
PD703036H,
703036HY, 70F3036H, 70F3036HY, 703037H, 703037HY, 70F3037H, and 70F3037HY).
After reset: 00H
R/W
Address: FFFFF3DEH
7
6
5
4
3
2
1
0
IEHCLK
0
0
0
0
0
0
0
IECS1
IECS1
IECS
Note
IEBus clock selection
0
0
@ f
XX
= 6.0 MHz or f
XX
= 6.291 MHz
0
1
@ f
XX
= 12.0 MHz or f
XX
= 12.582 MHz
1
0
@ f
XX
= 18.0 MHz or f
XX
= 18.873 MHz
1
1
Setting prohibited
Note
Bit 0 of the IECLK register