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System Overview
3-4
Am186™CC/CH/CU Microcontrollers User’s Manual
3.3
SYSTEM CONFIGURATION
Table 3-3 lists the registers used by the Am186CC/CH/CU microcontrollers for system
configuration. Appendix A summarizes the bits in all of the registers. For a complete
description of all the peripheral registers, see the
Am186™CC/CH/CU Microcontrollers
Register Set Manual, order #21916.
When RES is asserted, the Reset Configuration (RESCON) register is set to the value
found on AD15–AD0. There is a one-to-one correspondence between address/data bus
signals and the RESCON register’s bits during reset (AD15 corresponds to bit 15 of the
RESCON register, and so on). When RES is deasserted, the RESCON register holds its
value. Software can read this value to determine the configuration information. For more
information, see “Initialization and Reset” on page 3-5.
PIO30
18
DEN
DS
—
PIO31
13
PCS7
—
—
PIO32
11
PCS6
—
—
PIO33
19
ALE
—
—
PIO34
20
BHE
—
—
PIO35
15
SRDY
—
—
PIO36
138
DCE_RXD_B
PCM_RXD_B
—
PIO37
139
DCE_TXD_B
PCM_TXD_B
—
PIO38
137
DCE_CTS_B
PCM_TSC_B
—
PIO39
136
DCE_RTR_B
—
—
PIO40
135
DCE_RCLK_B
PCM_CLK_B
—
PIO41
134
DCE_TCLK_B
PCM_FSC_B
—
PIO42
153
DCE_RXD_C
PCM_RXD_C
—
PIO43
154
DCE_TXD_C
PCM_TXD_C
—
PIO44
152
DCE_CTS_C
PCM_TSC_C
—
PIO45
151
DCE_RTR_C
—
—
PIO46
24
CTS_HU
DCE_CTS_D
PCM_TSC_D
PIO47
23
RTR_HU
DCE_RTR_D
—
Table 3-3
System Configuration Register Summary
Offset
Register
Mnemonic
Register Name
Description
3DEh
RESCON
Reset Configuration
Provides a way to make design-specific
hardware configuration information available
to software.
3F0h
SYSCON
System Configuration
Contains system-wide configuration bits which
affect the operation on a global basis.
3F4h
PRL
Processor Revision Level
Contains the specific release level of the
processor.
Table 3-2
Multiplexed Signal Trade-Offs Ordered by PIO (Continued)
Desired Function
Unavailable Functions
Signal
Pin
Signal
Signal
Signal
CC
CH
CC
CH
CC
CH
CC
CH
CC
CH
CC
CH
CC
CH
CC
CH
CC
CH
CC
CH
CC
CH
CC
CC
CC
CC
CC
CC
CC
CC
CC
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...