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
Содержание Am186 CC
Страница 1: ...Am186 CC CH CU Microcontrollers User s Manual Order 21914B...
Страница 4: ...iv Am186 CC CH CU Microcontrollers User s Manual...
Страница 18: ...Table of Contents xviii Am186 CC CH CU Microcontrollers User s Manual...
Страница 24: ...Introduction xxiv Am186 CC CH CU Microcontrollers User s Manual...
Страница 39: ...Architectural Overview Am186 CC CH CU Microcontrollers User s Manual 1 15 Figure 1 6 32 Channel Linecard CH CC...
Страница 40: ...Architectural Overview 1 16 Am186 CC CH CU Microcontrollers User s Manual...
Страница 86: ...System Overview 3 36 Am186 CC CH CU Microcontrollers User s Manual...
Страница 92: ...Emulator Support 4 6 Am186 CC CH CU Microcontrollers User s Manual...
Страница 112: ...DRAM Controller 6 8 Am186 CC CH CU Microcontrollers User s Manual...
Страница 134: ...Interrupts 7 22 Am186 CC CH CU Microcontrollers User s Manual...
Страница 186: ...Programmable I O Signals 9 8 Am186 CC CH CU Microcontrollers User s Manual...
Страница 200: ...Watchdog Timer 11 6 Am186 CC CH CU Microcontrollers User s Manual...
Страница 232: ...Asynchronous Serial Ports UARTs 13 24 Am186 CC CH CU Microcontrollers User s Manual...
Страница 242: ...Synchronous Serial Port SSI 14 10 Am186 CC CH CU Microcontrollers User s Manual...
Страница 264: ...High Level Data Link Control HDLC 15 22 Am186 CC CH CU Microcontrollers User s Manual...
Страница 332: ...Universal Serial Bus USB 18 34 Am186 CC CH CU Microcontrollers User s Manual...
Страница 348: ...Register Summary A 16 Am186 CC CH CU Microcontrollers User s Manual...
Страница 376: ...Index Index 18 Am186 CC CH CU Microcontrollers User s Manual...