Am186™CC/CH/CU Microcontrollers User’s Manual
3-1
CHAPTER
3
SYSTEM OVERVIEW
3.1
OVERVIEW
This chapter contains descriptions of the Am186CC/CH/CU microcontrollers’ system
configuration registers, initialization and processor reset, signals, bus interface, and clock
control.
3.2
SYSTEM DESIGN
Table 3-1 shows the multiplexed signals and the trade-offs when selecting various functions.
Table 3-2 on page 3-3 shows the multiplexed signal information ordered by PIO signal.
Table 3-1
Multiplexed Signal Trade-Offs
Desired Function
Unavailable Functions
Inter-
face
Signal
Pin
Inter-
face
Signal
Inter-
face
Signal
Inter-
face
Signal
Inter-
face
Signal
Memory
SRAM
LCS
131
DRAM
RAS0
—
—
—
—
PIO
—
MCS1
127
CAS1
—
—
—
—
—
MCS2
128
CAS0
—
—
—
—
—
MCS3
129
RAS1
—
—
—
—
PIO5
DRAM
CAS0
128
SRAM
MCS2
—
—
—
—
PIO
—
CAS1
127
MCS1
—
—
—
—
—
RAS0
131
LCS
—
—
—
—
—
RAS1
129
MCS3
—
—
—
—
PIO5
Synchronous Communications Interfaces
DCE
Channel
A
DCE_RXD_A
118
PCM
Channel
A
PCM_RXD_A
—
—
GCI
Channel
A
GCI_DD_A
PIO
—
DCE_TXD_A
119
PCM_TXD_A
—
—
GCI_DU_A
—
DCE_RCLK_A
117
PCM_CLK_A
—
—
GCI_DCL_A
—
DCE_TCLK_A
116
PCM_FSC_A
—
—
GCI_FSC_A
—
DCE_CTS_A
123
PCM_TSC_A
—
—
—
PIO17
DCE_RTR_A
122
—
—
—
—
PIO18
DCE
Channel
B
DCE_RXD_B
138
PCM
Channel
B
PCM_RXD_B
—
—
—
—
PIO
PIO36
DCE_TXD_B
139
PCM_TXD_B
—
—
—
—
PIO37
DCE_RCLK_B
135
PCM_CLK_B
—
—
—
—
PIO40
DCE_TCLK_B
134
PCM_FSC_B
—
—
—
—
PIO41
DCE_CTS_B
137
PCM_TSC_B
—
—
—
—
PIO38
DCE_RTR_B
136
—
—
—
—
—
PIO39
DCE
Channel
C
DCE_RXD_C
153
PCM
Channel
C
PCM_RXD_C
—
—
GCI to
PCM
Con-
version
—
PIO
PIO42
DCE_TXD_C
154
PCM_TXD_C
—
—
—
PIO43
DCE_RCLK_C
150
PCM_CLK_C
—
—
PCM_CLK_C
PIO22
DCE_TCLK_C
149
PCM_FSC_C
—
—
PCM_FSC_C
PIO23
DCE_CTS_C
152
PCM_TSC_C
—
—
—
PIO44
DCE_RTR_C
151
—
—
—
—
PIO45
CC
CH
CC
CH
CC
CC
CH
CC
CH
CC
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...