Synchronous Serial Port (SSI)
14-2
Am186™CC/CH/CU Microcontrollers User’s Manual
Figure 14-1
SSI Block Diagram
14.3
SYSTEM DESIGN
Table 14-1 lists the SSI signals that are multiplexed with other microcontroller functions.
Pinstraps are sampled only at external reset and do not affect the pin’s other functions, so
they are not shown in this table. Other multiplexed signals, when enabled, either disable or
alter any other functions that use the same pin. Figure 14-2 illustrates a sample SSI
application for the Am186CC/CH/CU microcontrollers.
.
Table 14-1
SSI Multiplexed Signals
Signal Function
Multiplexed
Signal(s)
Default
Signal
SDEN
Serial data enable
PIO10
PIO10
SCLK
Serial clock
PIO11
PIO11
SDATA
Serial data
PIO12
PIO12
Block Select
Register Offset
Read
Read Data
Read Data Enable
Write Data
Write Data Enable
Internal
Register Control
5 Registers/
Control State
Machine
Bidirectional
Shift Register
Synchronous
Clock Register
PAD
PAD
PADS
Block
Decode
Transmit Data
Receive Data
Shift Control
Clock Control
Internal
SDATA
DRV_SDATA
SCLK (feedback from PADS)
Internal
Internal SDEN
SDEN
Read Data
16 x 5
Register
Selects
Status
State
4
16
Control
16
8
8
SCLK
SDATA
SDATA
SCLK
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...