MSC8101DS Motorola / Freescale Semiconductor, MSC8101DS Datasheet - Page 43
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MSC8101DS
Manufacturer Part Number
MSC8101DS
Description
MSC8101 Network Digital Signal Processor
Manufacturer
Motorola / Freescale Semiconductor
Datasheet
1.MSC8101DS.pdf
(116 pages)
- Current page: 43 of 116
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General-
Purpose
PC23
PC22
I/O
CLK9
DMA: DACK1
EXT2
SI1: L1ST1
CLK10
DMA: DREQ1
Peripheral Controller:
Name
Dedicated I/O
Protocol
Table 1-9. Port C Signals (Continued)
d I/O Data
Direction
Dedicate
Output
Output
Output
Input/
Input
Input
Input
MSC8101 Technical Data
Clock 9
The CPM supports up to 10 clock input pins. The clocks are sent to
the bank-of-clocks selection logic, where they can be routed to the
controllers.
DMA: Data Acknowledge 1
DACK1, DREQ1, DRACK1, and DONE1 belong to the SIU DMA.
DONE1 and DRACK1 are signals on the same pin and therefore
cannot be used simultaneously. There are two sets of DMA pins
associated with the PIO ports.
External Request 2
External request input line 2 asserts an internal request to the CPM
processor. The signal can be programmed as level- or
edge-sensitive, and also has programmable priority. Refer to the
RISC Controller Configuration Register (RCCR) description in the
Chapter 17 of the MSC8101 Reference Manual for programming
information. There are no current microcode applications for this
request line. It is reserved for future development.
Serial Interface 1: Layer 1 Strobe 1
In the time-slot assigner supported by SI1. The MSC8101 time-slot
assigner supports up to four strobe outputs that can be asserted on
a bit or byte basis. The strobe outputs are useful for interfacing to
other devices that do not support the multiplexed interface or for
enabling/disabling three-state I/O buffers in a multiple-transmitter
architecture. These strobes can also generate output wave forms
for such applications as stepper-motor control.
Clock 10
The CPM supports up to 10 clock input pins. The clocks are sent to
the bank-of-clocks selection logic, where they can be routed to the
controllers.
DMA: Request 1
DACK1, DREQ1, DRACK1, and DONE1 belong to the SIU DMA.
DONE1 and DRACK1 are signals on the same pin and therefore
cannot be used simultaneously. There are two sets of DMA pins
associated with the PIO ports.
Description
Port C Signals
1-37
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