HDLC External Serial Interface Configuration (TSAs)
16-2
Am186™CC/CH/CU Microcontrollers User’s Manual
In the Am186CC microcontroller, Time Slot selection also supports isolation of GCI B and
D channels on separate HDLC channels. Each TSA channel can support a burst data rate
to or from the HDLC of up to 768 Kbit/s in GCI mode.
The TSA controllers also generate control signals for programmable frame sync pulse
polarity and individual channel time slot control output, which is asserted for the duration
of the programmed time slot(s). The latter is routed externally for PCM Highway applications
and can be used in subscriber linecard applications where it is used as an enable for three-
state data buffering on the PCM Highway.
The TSA controllers support adjustable channel sizing with the ability to define time slot
start and stop points. This channel adjustment and placement feature is an essential factor
for the creation of a GCI frame. The adjustable sizing feature also allows the associated
HDLC channel to be used for ISDN LAP-D and reduced data mode X.25 LAP-B
transmissions.
For applications that do not use the entire allocated time slot but do require a defined polarity
for the remaining unused bit positions, the TSA controllers provide the option of adding
additional polarity bits (up to seven) to fill out the remaining bit positions.
CC
Summary of Contents for Am186 CC
Page 1: ...Am186 CC CH CU Microcontrollers User s Manual Order 21914B...
Page 4: ...iv Am186 CC CH CU Microcontrollers User s Manual...
Page 18: ...Table of Contents xviii Am186 CC CH CU Microcontrollers User s Manual...
Page 24: ...Introduction xxiv Am186 CC CH CU Microcontrollers User s Manual...
Page 40: ...Architectural Overview 1 16 Am186 CC CH CU Microcontrollers User s Manual...
Page 86: ...System Overview 3 36 Am186 CC CH CU Microcontrollers User s Manual...
Page 92: ...Emulator Support 4 6 Am186 CC CH CU Microcontrollers User s Manual...
Page 112: ...DRAM Controller 6 8 Am186 CC CH CU Microcontrollers User s Manual...
Page 134: ...Interrupts 7 22 Am186 CC CH CU Microcontrollers User s Manual...
Page 186: ...Programmable I O Signals 9 8 Am186 CC CH CU Microcontrollers User s Manual...
Page 200: ...Watchdog Timer 11 6 Am186 CC CH CU Microcontrollers User s Manual...
Page 232: ...Asynchronous Serial Ports UARTs 13 24 Am186 CC CH CU Microcontrollers User s Manual...
Page 242: ...Synchronous Serial Port SSI 14 10 Am186 CC CH CU Microcontrollers User s Manual...
Page 264: ...High Level Data Link Control HDLC 15 22 Am186 CC CH CU Microcontrollers User s Manual...
Page 332: ...Universal Serial Bus USB 18 34 Am186 CC CH CU Microcontrollers User s Manual...
Page 348: ...Register Summary A 16 Am186 CC CH CU Microcontrollers User s Manual...
Page 376: ...Index Index 18 Am186 CC CH CU Microcontrollers User s Manual...