HDLC External Serial Interface Configuration (TSAs)
16-14
Am186™CC/CH/CU Microcontrollers User’s Manual
16.5.4.3
GCI
The Am186CC microcontroller supports GCI, which is an industry-standard serial bus for
interconnecting telecommunications integrated circuits. For more information, see
Chapter 17, “General Circuit Interface (GCI).”
16.5.5
Software-Related Considerations
■
When using the TSAs in Transparent PCM Highway mode, the first byte of data
transferred must always contain a 1 as the first bit. If the first bit is a 0, the idle state
(mark idle) previous to the actual data stream is corrupted, which could falsely indicate
the start of actual data. This only applies when using Transparent mode.
16.5.6
Comparison to Other Devices
The Am186CC and Am186CH microcontrollers are similar to the AMD Am79C30 in clock
slave mode.
16.6
INITIALIZATION
On both external and internal reset, the following occurs:
■
All the TSA registers default to C0h, which disables the TSA channels (they must be
configured by software before being enabled).
■
The multiplexed signals default as shown in Table 16-1 on page 16-5.
Table 16-3
Timing Parameters Per Device (Supported PCM Codecs in GCI Mode)
Parameter
1
Notes:
1. All loading is 150 pF.
Device Time (in ns)
79C30 as
Master
Am186CC
Am79C02/
03/031
MC14555
x
TP305x
TP307x
Clock Period
Min: 487
Max: 815
Min: 974
Max: 1630
Min: 122
Max: 7812
Clock High Pulse Width
Min: 260
Min: 260
Min: 48
Max: 3890
Min: 50
Min: 160
Min: 80
Clock Low Pulse Width
Min: 260
Min: 260
Min: 48
Max: 3890
Min: 50
Min: 160
Min: 80
Frame Sync Setup Time
Min: 50
Min: 50
Min: 25
Max:
clk prd-50
Min: 50
Min: 50
Min: 30
Frame Sync Hold Time
Min: 50
Min: 260
(min PW)
2
2. One clock prior to frame sync is a full clock period, guaranteed to hold for a minimum pulse width Low.
Min: 50
Min: 50
Min: 100
Min: 30
Data Output Delay
Max: 100
Data
movement
occurs out-
side the
Am186CC
Min: 3/30ns
Max: 80/150
Min: 20
Typ: 60
Max: 140
Min: 0
Max: 140
Max: 80
Data Output Hold Time
Min: 70
Min: 5/30
Max: 80/150
Max: 80
Data Input Setup Time
PW + 20
Min: 25
Min: 0
Min: 50
Min: 30
Data Input Hold Time
50
Min: 5
Min: 50
Min: 50
Min: 15
CC
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...