HD6417641 RENESAS [Renesas Technology Corp], HD6417641 Datasheet - Page 196

• Manufacturer Part Number: HD6417641
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 4 Clock Pulse Generator (CPG)
4.2
Table 4.1 lists the CPG pins and their functions.
Table 4.1
4.3
Table 4.2 shows the relationship between the mode control pins (MD2 and MD0) combinations
and the clock operating modes. Table 4.3 shows the usable frequency ranges in the clock operating
modes.
Table 4.2
Rev. 4.00 Sep. 14, 2005 Page 146 of 982
REJ09B0023-0400
Pin Name
Mode control pins
Crystal input/output pins
(Clock input pins)
Clock input/output pin
Clock-output pin
Mode
2
6
7
MD2
0
1
1
Input/Output Pins
Clock Operating Modes
Pin Values
Pin Configuration and Functions of the Clock Pulse Generator
Clock Operating Modes
MD0
0
0
1
Source
EXTAL or
Crystal resonator
EXTAL or
Crystal resonator
CKIO
Symbol I/O
MD0
MD2
XTAL
EXTAL
CKIO
CKIO2
Clock I/O
Input
Input
Output Connected to the crystal resonator (leave this pin open-circuit
Input
I/O
Output Low-level output or clock output pin.
Function
(clock operating modes 2 and 6)
Set the clock operating mode.
Set the clock operating mode.
when the crystal resonator is not in use).
Connected to the crystal resonator or used to input an external
clock.
Clock output pin. The pin can also
be placed in the high-impedance
state.
The selection is described in the
description of the common control
registers in section 12, Bus State
Controller (BSC).
Output
CKIO
CKIO

PLL2
On/Off
ON (×4)
ON (×2)
OFF
PLL1
On/Off
ON (×1, 2)
ON (×1, 2, 3, 4)
ON (×1, 2, 3, 4)
Function
(clock operating mode 7)
Input for the external clock
pulse.
High impedance
CKIO Frequency
(EXTAL or
Crystal resonator) ×4
(EXTAL or
Crystal resonator) ×2
(CKIO)