DSP56800FMD MOTOROLA [Motorola, Inc], DSP56800FMD Datasheet - Page 12

• Manufacturer Part Number: DSP56800FMD
• Description: Preliminary Technical Data DSP56F826 16-bit Digital Signal Processor
• Manufacturer: MOTOROLA [Motorola, Inc]

All inputs have a weak internal pull-up circuit associated with them. These pull-up circuits are always enabled.
Exceptions:
12
GPIOC0
GPIOC1
GPIOF7
GPIOC5
GPIOC3
1.
2.
Signal
Name
STCK
SRFS
Table 3. DSP56F826 Signal and Package Information for the 100 Pin LQFP
SRD
STD
SS
When a pn is owned by GPIO, then the pull-up may be disabled under software control.
TCK has a weak pull-down circuit always active.
Pin No.
51
52
87
56
54
Input/Output
Input/Output
Input/ Output
Input/Output
Input
Input/Output
Input/ Output
Input/Output
Output
Input/Output
Type
DSP56F826 Preliminary Technical Data
SSI Receive Data (SRD)—This input pin receives serial data and transfers
the data to the SSI Receive Shift Receiver.
Port C GPIO—This is a General Purpose I/O (GPIO) pin with the capability
of being individually programmed as input or output.
After reset, the default state is GPIO input.
SSI Serial Receive Frame Sync (SRFS)—This bidirectional pin is used by
the receive section of the SSI as frame sync I/O or flag I/O. The STFS can be
used only by the receiver. It is used to synchronize data transfer and can be
an input or an output.
Port C GPIO—This is a General Purpose I/O (GPIO) pin with the capability
of being individually programmed as input or output.
After reset, the default state is GPIO input.
SPI Slave Select—In master mode, this pin is used to arbitrate multiple
masters. In slave mode, this pin is used to select the slave.
Port F GPIO—This General Purpose I/O (GPIO) pin can be individually
programmed as input or output.
After reset, the default state is SS.
SSI Serial Transmit Clock (STCK)—This bidirectional pin provides the
serial bit rate clock for the transmit section of the SSI. The clock signal can
be continuous or gated. It can be used by both the transmitter and receiver in
synchronous mode.
Port C GPIO—This is a General Purpose I/O (GPIO) pin with the capability
of being individually programmed as input or output.
After reset, the default state is GPIO input.
SSI Transmit Data (STD)—This output pin transmits serial data from the
SSI Transmitter Shift Register.
Port C GPIO—This is a General Purpose I/O (GPIO) pin with the capability
of being individually programmed as input or output.
After reset, the default state is GPIO input.
Description