SA1110 Datasheet, PDF (183/406 Pages) Intel Corporation – Intel StrongARM SA-1110 Microprocessor

Peripheral Control Module
Table 11-2 shows the base address for each of the peripheral control units.
Table 11-2.
Peripheral Unit Base Addresses
Peripheral
LCD Controller
Serial Port 0
Serial Port 1
Serial Port 2
(ICP)
Serial Port 3
Serial Port 4
Peripheral Pin Controller (PPC)¹
Serial Protocol
USB
UART
GPCLK
UART
HSSP
UART
MPC
SSP
1 _{The PPC does not support DMA requests.}
Base Address
0h B010 0000
0h 8000 0000
0h 8001 0000
0h 8002 0000
0h 8003 0000
0h 8004 0000
0h 8005 0000
0h 8006 0000
0h 8007 0000
0h 9006 0000
11.3 Interrupts
Each peripheral unit interfaces to the interrupt controller within the system control module. The
interrupt controller contains a 32-bit interrupt pending register, which when read, informs the user
of all the units on the SA-1110 that are currently generating an unmasked interrupt. Once the user
determines which unit is causing the interrupt, the unit’s status registers can be read to determine
the exact cause of the interrupt. This mechanism provides a two-level approach to identify the
source of any interrupt from the hundreds of possible interrupt sources that exist on the SA-1110.
Each of the peripheral units generate either one or two interrupts that correspond to specific
interrupt pending bits within the interrupt controller. Serial port 1 contains one serial engine and
one logic engine. Serial port 4 contains two independent serial engines. Although each peripheral
uses only one set of pins for serial communication, the user may choose to use both logic blocks
within serial ports 1 and 4 by assigning one of the two protocols to communicate off-chip by taking
control of GPIO pins. Because the two logic blocks within serial ports 1 and 4 can operate at the
same time, these two units are assigned two separate interrupt request numbers within the interrupt
controller's pending register, except for serial port 1's GPCLK unit which does not generate an
interrupt request. units.Table 11-3 shows the interrupt level for each of the peripheral control units.
Table 11-3. Peripheral Unit Interrupt Numbers
LCD controller
Serial port 0: USB
Serial port 1: UART
Serial port 2: ICP
Serial port 3: UART
Serial port 4:
Peripheral
MCP
SSP
Interrupt
Number
12
13
15
16
17
18
19
SA-1110 Developer’s Manual
11-3