TMP93CS41 datasheet(237/248 Pages) TOSHIBA

237 / 248 page

TMP93CS40/TMP93CS41

2004-02-10

93CS40-235

(10) Clock control

Symbol

Name

Address

SCOSEL

SCOEN

ALEEN

CLKEN

R/W

0/1 (Note 1) 0/1 (Note 1)

CKOCR

Clock

output

control

006DH

SCOUT

select

0: fFPH

1: fSYS

SCOUT

output

control

0: I/O port

1: SCOUT

output

ALE pin

control

0:High-Z

output

1: ALE

output

CLK pin

control

0:High-Z

output

1: CLK

output

XEN

XTEN

RXEN

RXTEN

RSYSCK

WUEF

PRCK1

PRCK0

R/W

SYSCR0

System

clock

control

006EH

High-

frequency

oscillator

(fc)

0: Stop

1: Oscillation

Low-

frequency

oscillator

(fs)

0: Stop

1: Oscillation

High-

frequency

oscillator (fc)

after

release of

STOP mode

0: Stop

1: Oscillation

Low-

frequency

oscillator (fs)

after

release of

STOP mode

0: Stop

1: Oscillation

Selected

clock after

Release of

Stop mode

0: fc

1: fs

Warm-up

timer

0 Write:

Don’t care

1 Write:

Start timer

0 Read:

End

warm up

1 Read:

Continue

warm up

Select prescaler clock

00: fFPH

01: fs

10: fc/16

11: (Reserved)

SYSCK

GEAR2

GEAR1

GEAR0

R/W

SYSCR1

System

clock

control

006FH

Select

system clock

0: fc

1: fs

(Note2)

Select gear value of high frequency (fc)

000: fc

001: fc/2

010: fc/4

011: fc/8

100: fc/16

101: (Reserved)

110: (Reserved)

111: (Reserved)

Note 1:

The value after reset of <CLKEN>, <ALEEN> is as follows:

TMP93CS40: 0 (High impedance output)

TMP93CS41: 1 (CLK or ALE output)

However, during reset the CLK pin is pulled up internally on both models.

Note 2:

The high-frequency oscillator will be enabled when SYSCR1<SYSCK> is set to 0 regardless of the

value of SYSCR0<XEN>.

The low-frequency oscillator will be enabled when SYSCR1<SYSCK> is set to 1 regardless of the

value of SYSCR0<XTEN>.

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