32186 datasheet(308/1032 Pages) RENESAS

308 / 1032 page

MULTIJUNCTION TIMERS

10-12

32185/32186 Group Hardware Manual

Rev.1.10 REJ09B0235-0110 May 15, 07

10.2.2 Common Count Clock Select Function

Common Count Clock Select Register (CNTCKSEL)

<Address: H’0080 0200>

Bit Name

Function

PRS012CKS

0: BCLK/4

Prescaler 0-2, TML0,1 supplied clock select bit

1: BCLK/2

1–7

No function assigned. Fix to "0."

Note 1: Clock switchover takes effect asynchronously with the count clock. This bit can only be set or reset before the prescalers 0,

1, 2 and the TML0, 1 counters are set when the TOP/TIO/TMS are inactive.

This register is used to select the clock supplied to the prescalers 0–2 and the timers (TML0, 1).

(1) PRS012CKS (prescaler 0-2, TML0,1 supplied clock select) bit (Bit 0)

This bit selects the clock supplied to the prescalers 0–2 and the timers TML0 and 1. Setting this bit to 0

selects BCLK/4 (5 MHz when f(CPUCLK) = 80 MHz); setting this bit to 1 selects BCLK/2 (10 MHz when

f(CPUCLK) = 80 MHz).

Figure 10.2.1 Block Diagram of the Common Count Clock Select Function

123456

PRS012CKS

0000000

PRS0

PRS1

PRS2

BCLK/2

1/4

TML0

TML1

Clock bus 0

Clock bus 1

Clock bus 2

BCLK

1/2

BCLK/4

10.2 Common Units of Multijunction Timers

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