tmp19a44fda TOSHIBA Semiconductor CORPORATION, tmp19a44fda Datasheet - Page 386
tmp19a44fda
Manufacturer Part Number
tmp19a44fda
Description
32bit Tx System Risc
Manufacturer
TOSHIBA Semiconductor CORPORATION
Datasheet
1.TMP19A44FDA.pdf
(672 pages)
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TMP19A44
14.4 Operation of Each Circuit (Channel 0)
As channels 0 to 3 operate identically, only channel 0 is described here.
14.4.1 Prescaler
The device includes a 7-bit prescaler to generate necessary clocks to drive SIO0. The input clock φ T0 to
the prescaler is selected by SYSCR of CG <PRCK2:0> to provide the frequency of either fperiph/2,
fperiph/4, fperiph/8, fperiph/16 or fperiph/32.
The clock frequency fperiph is either the clock "fgear," to be selected by SYSCR1<FPSEL> of CG, or
the clock "fc" before it is divided by the clock gear.
The prescaler becomes active only when the baud rate generator is selected for generating the serial
transfer clock in the mode control register 0 (SC0MOD0<SC1:0>).
Table 14. shows Clock Resolution to the Baud Rate Generator.
The serial interface baud rate generator uses four different clocks, i.e., φ T1, φ T4, φ T16 and φ T64,
supplied from the prescaler output clock.
Serial Channel (SIO)
TMP19A44(rev1.3) 14-34
2010-04-01
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