MC68000 MOTOROLA [Motorola, Inc], MC68000 Datasheet - Page 418
MC68000
Manufacturer Part Number
MC68000
Description
Manufacturer
MOTOROLA [Motorola, Inc]
Datasheet
1.MC68000.pdf
(480 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MC68000-10/BZAJC
Manufacturer:
MOT
Quantity:
26
Company:
Part Number:
MC68000-8BXAJ
Manufacturer:
MOT
Quantity:
9
Company:
Part Number:
MC680008FN8
Manufacturer:
FREESCALE
Quantity:
8 831
Company:
Part Number:
MC68000FN10
Manufacturer:
MOT
Quantity:
5 510
Part Number:
MC68000FN10
Manufacturer:
MOTOROLA/摩托罗拉
Quantity:
20 000
Company:
Part Number:
MC68000FN12
Manufacturer:
MOT
Quantity:
5 510
Part Number:
MC68000L8
Manufacturer:
MOTOROLA/摩托罗拉
Quantity:
20 000
Part Number:
MC68000P10
Manufacturer:
MOT
Quantity:
20 000
- Current page: 418 of 480
- Download datasheet (2Mb)
MC68302 Applications
A synchronous UART built with transparent mode has one simplifying difference from a 5-
or 6-bit UART. Since a clock is provided with each bit, the transparent mode can be clocked
at 1x the data rate, reducing the transparent bandwidth and the buffer memory require-
ments. The only disadvantage is that the M68000 core must build the transmit buffer up a
bit at a time using bit instructions.
D.8.13 SCP as a Transparent Mode Alternative
One often overlooked feature of the MC68302 is the SCP. If your application needs byte-at-
a-time transparent mode operation, the SCP may fit the bill. The SCP, a subset of the Mo-
torola synchronous SPI protocol interface, transmits and receives bytes in a transparent
mode.
Each time the M68000 core sets the start bit in the SCP, one byte of data is shifted from the
SCP buffer descriptor out on the SPTXD pin (see Figure D-31). At the same time that trans-
mit data is being clocked out, receive data is being clocked into the MC68302.
The advantages of using the SCP instead of an SCC in transparent mode are simplicity and
the saving of SCCs for other functions. There are two disadvantages, however. First, the
M68000 core must be individually involved in each byte transferred (an interrupt may be
generated per byte); thus, data cannot be sent back-to-back without at least some delay.
Second, the SCP functions in a clock master mode only; therefore, the device communicat-
ing with the SCP must be able to accept an external input clock.
It is possible for the SCP to interface externally to one of the MC68302's SCCs. For instance,
this type interface could be used to convert HDLC-encoded data from a serial format to a
parallel format so that it can be moved over the M68000 bus.
D.8.14 Transparent Mode Summary
The totally transparent mode on the MC68302 can be used in many ways. Once the desired
physical interface is chosen (NSMI, PCM, IDL, or GCI), the vast number of possibilities can
begin to be narrowed down. These possibilities were described in D.8 Using the MC68302
Transparent Mode, with emphasis on the NMSI and PCM modes. A step-by-step register
initialization was given for a transparent loopback application on SCC2. It was also stated
that occasionally BISYNC mode can be used in place of an SCC in transparent mode.
D-68
MC68302 USER’S MANUAL
MOTOROLA
Related parts for MC68000
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
Motorola, Inc [VOLTAGE REGULATOR]
Manufacturer:
Motorola
Datasheet:
Part Number:
Description:
6367254 MOTOROLA SC (XSTRS/R F)
Manufacturer:
MOTOROLA [Motorola, Inc]
Datasheet:
Part Number:
Description:
MC1494LMotorola, Inc [MONOLITHIC FOUR-QUADRANT MULTIPLIER]
Manufacturer:
Motorola
Datasheet:
Part Number:
Description:
MC1466LMotorola, Inc [PRECISION WIDE RANGE VOLTAGE AND CURRENT REGULATOR]
Manufacturer:
Motorola
Datasheet:
Part Number:
Description:
MC145532DWMotorola, Inc [ADPCM Transcoder]
Manufacturer:
Motorola
Datasheet:
Part Number:
Description:
Silicon Controlled Rectifiers
Manufacturer:
MOTOROLA [Motorola, Inc]
Datasheet:
Part Number:
Description:
RF Power Field Effect Transistors N-Channel Enhancement-Mode Lateral MOSFETs
Manufacturer:
MOTOROLA [Motorola, Inc]
Datasheet:
Part Number:
Description:
RF POWER FIELD EFFECT TRANSISTORS
Manufacturer:
MOTOROLA [Motorola, Inc]
Datasheet:
Part Number:
Description:
LATERAL N-CHANNEL BROADBAND RF POWER MOSFETs
Manufacturer:
MOTOROLA [Motorola, Inc]
Datasheet:
Part Number:
Description:
RF POWER FIELD EFFECT TRANSISTOR
Manufacturer:
MOTOROLA [Motorola, Inc]
Datasheet:
Part Number:
Description:
RF LOW POWER TRANSISTOR NPN SILICON
Manufacturer:
MOTOROLA [Motorola, Inc]
Datasheet:
Part Number:
Description:
PLASTIC SURFACE MOUNT ZENER DIODES 1.5 WATTS 3.3-68 VOLTS
Manufacturer:
MOTOROLA [Motorola, Inc]
Datasheet:
Part Number:
Description:
OVERVOLTAGE TRANSIENT SUPPRESSOR
Manufacturer:
MOTOROLA [Motorola, Inc]
Datasheet:
Part Number:
Description:
TMOS POWER FET 15 AMPERES 60 VOLTS
Manufacturer:
MOTOROLA [Motorola, Inc]
Datasheet:
Part Number:
Description:
TMOS POWER FET LOGIC LEVEL 19 AMPERES 30 VOLTS RDS(on) = 0.099 OHM
Manufacturer:
MOTOROLA [Motorola, Inc]
Datasheet: