SH7052 Datasheet, PDF (238/919 Pages) Renesas Technology Corp – SuperHTM RISC engine

• Bits 3 to 0—Clock Select 3 to 0 (CKSEL3 to CKSEL0): These bits select whether an internal
clock or external clock is used.
When an internal clock is selected, scaled clock φ" is selected from φ', φ'/2, φ'/4, φ'/8, φ'/16, and
φ'/32.
When an external clock is selected, TCLKA, TCLKB, TI10 pin input, or a TI10 pin input
multiplied clock is selected.
When TI10 pin input and TI10 pin input clock multiplication are selected, set CKEG1 and
CKEG0 in TCR10 so that TI10 input is possible.
Bit 3:
CKSEL3
0
Bit 2:
CKSEL2
0
1
1
0
1
*: Don’t care
Bit 1:
CKSEL1
0
1
0
1
0
1
*
Bit 0:
CKSEL0
0
1
0
1
0
1
0
1
0
1
*
*
Description
Internal clock φ": counting on φ' (Initial value)
Internal clock φ": counting on φ'/2
Internal clock φ": counting on φ'/4
Internal clock φ": counting on φ'/8
Internal clock φ": counting on φ'/16
Internal clock φ": counting on φ'/32
External clock: counting on TCLKA pin input
External clock: counting on TCLKB pin input
Counting on TI10 pin input (AGCK)
Counting on multiplied (corrected)(AGCKM) TI10
pin input clock
Setting prohibited
Setting prohibited
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