SPMC68CK338CPV14 datasheet(103/133 Pages) FREESCALE

103 / 133 page

MC68CK338

MOTOROLA

MC68CK338TS/D

103

DASMB is the data register associated with channel B. Table 64 shows how DASMB is used with the

different operating modes. Depending on the mode selected, software access is to register B1 or reg-

ister B2.

Table 63 DASMA Operations

Mode

DASMA Operation

DIS

DASMA can be accessed to prepare a value for a subsequent mode selection

IPWM

DASMA contains the captured value corresponding to the trailing edge of the measured pulse

IPM

DASMA contains the captured value corresponding to the most recently detected user-specified

rising or falling edge

DASMA contains the captured value corresponding to the most recently detected user-specified

rising or falling edge

OCB

DASMA is loaded with the value corresponding to the leading edge of the pulse to be generated.

Writing to DASMA in the OCB and OCAB modes also enables the corresponding channel A com-

parator until the next successful comparison.

OCAB

DASMA is loaded with the value corresponding to the leading edge of the pulse to be generated.

Writing to DASMA in the OCB and OCAB modes also enables the corresponding channel A com-

parator until the next successful comparison.

OPWM

DASMA is loaded with the value corresponding to the leading edge of the PWM pulse to be gen-

erated.

DASM4B, DASM5B — DASM Data Register B

$YFF424, $YFF42C

DASM6B, DASM7B — DASM Data Register B

$YFF434, $YFF43C

DASM8B, DASM9B — DASM Data Register B

$YFF444, $YFF44C

DASM10B, DASM26B — DASM Data Register B

$YFF454, $YFF4D4

DASM27B, DASM28B — DASM Data Register B

$YFF4DC, $YFF4E4

DASM29B — DASM Data Register B

$YFF4EC

RESET:

Freescale Semiconductor, Inc.

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