Intel
StrongARM* SA-1111
Microprocessor Companion Chip
Brief Datasheet
Product Features
The Intel
StrongARM* SA-1111 Microprocessor Companion Chip
(SA-1111), when coupled with the Intel
StrongARM* SA-1110
Microprocessor (SA-1110), adds a variety of functions for use in high-
performance handheld computer systems. This companion chip brings a
new level of integration to small systems and enables complete systems to
be built with greatly reduced chip count, low power, and high performance.
n
PLL clock generator
-- 3.6863-MHz clock generated by the
StrongARM
*
processor
n
USB Host Controller
-- USB-Rev 1.1 compatible
-- Supports 1.5 Mbits/s and 12 Mbits/s
speeds of operation
n
Three modes of operation
-- Normal
-- Doze
-- Sleep
n
Two PS/2 ports for use with keyboards,
mice, trackpads, or other PS/2-compliant
devices
n
System Bus Interface (SBI)
-- Shared Memory Controller (SMC)
-- Register Access Bus (RAB)
-- DMA Bus
n
SSP* Serial Data Port
-- Supports National Microwire protocol,
TI Synchronous Serial Protocol (SSP),
and Motorola Serial Peripheral Interface
(SPI)* protocol
n
AC-Link/I
2
S Serial Port for Audio that
supports:
-- AC'97 codecs that are compliant with
AC-Link standard 1.03
-- I
2
S-format codecs
n
Two Pulse-Width-Modulated (PWM)
outputs
-- 8-bit digital-to-analog (D-to-A)
converters
n
PCMCIA and Compact Flash (CF)
Interface
-- Two sockets (one for PCMCIA and
one for CF)
-- Full card-detection and PCMCIA
voltage control supporting 3.3-V and
5-V PCMCIA cards
-- Full on-chip buffering so no external
devices are required
n
256 mini-ball grid array (mBGA)
Order Number:
278243-002
May 2000
2
SA-1111 Brief Datasheet
Description
The SA-1111 is an integrated circuit incorporating a Universal Serial Bus (USB)
controller, two PS/2 ports (mouse and trackpad), a PCMCIA and Compact Flash
(CF) interface, AC-Link/I
2
S serial audio port, two pulse-width-modulated
(PWM) outputs, and a versatile serial port. These functional blocks are
connected via a fast internal synchronous bus. The System Bus Interface (SBI)
connects the internal bus to the SA-1111's memory/system bus and transfers all
data and control information between the SA-1111 and the SA-1110 system
processor.
Information in this document is provided in connection with Intel
products. No license, express or implied, by estoppel or otherwise, to any intellectual
property rights is granted by this document. Except as provided in Intel's Terms and Conditions of Sale for such products, Intel assumes no liability
whatsoever, and Intel disclaims any express or implied warranty, relating to sale and/or use of Intel products including liability or warranties relating to
fitness for a particular purpose, merchantability, or infringement of any patent, copyright or other intellectual property right. Intel products are not
intended for use in medical, life saving, or life sustaining applications.
Intel may make changes to specifications and product descriptions at any time, without notice.
Contact your local Intel sales office or your distributor to obtain the latest specifications and before placing your product order.
Copies of documents which have an ordering number and are referenced in this document, or other Intel literature may be obtained by calling 1-800-
548-4725 or by visiting Intel's website at http://www.intel.com.
Copyright Intel Corporation, 2000
*Third-party brands and names are the property of their respective owners.
SA-1111 Brief Datasheet
3
SA-1111
Intel
StrongARM* SA-1111 Architecture
Figure 1
shows the functional blocks of the SA-1111.
Figure 1. SA-1111 Block Diagram
Universal Serial Bus (USB) Host Controller
The USB Host Controller is Open HCI-compatible, Windows95
*
USBD-compatible, and USB-
Rev 1.1 compatible. It supports both low- (1.5 Mbits/s) and high-speed (12 Mbits/s) USB devices.
The USB controls the transfer of data between USB peripherals (attached to the USB) and system
memory. The USB uses DMA to transfer data.
PS/2 Ports
The two PS/2 ports can be used with keyboards, mice, trackpads or other PS/2-compliant devices.
The PS/2 pins behave like open-drain I/Os when used in PS/2 mode. When not used for PS/2
attachment, the pins may be used as General-Purpose Input/Output (GPIO).
A6257-02
ADDR
Buffers
PCMCIA
Logic
Data
Buffers
PWM
Control
Interrupt
Controller
nCS
Intel
StrongARM
SA-1110
Interface
Shared
Memory
Controller
(SMC)
Intel
StrongARM*
SA-1110 System Bus
RDY
nSDCS
nOE
nWE
nSDRAS
nSDCAS
SDCLK
nCAS/DQM <3:0>
System Bus
LCD Contrast
LCD Brightness
AC '97
Codec
SPI
MicroWire
SSP
USB
USB Host
Controller
Address <25:0>
PCMCIA CNTRL
Slot 0 CNTL
Slot 0 ADDR
Slot 1 ADDR
Slot 0 Data
Slot 1 Data
Slot 1 CNTL
Data <31:0>
SSP
Serial
Port
AC-link
Serial
Port
PS/2
Control
PS/2 Mouse
PS/2 Trackpad
* Other brands and names are the property of their respective owners.
SA-1111
4
SA-1111 Brief Datasheet
PCMCIA and Compact Flash Interface
The PCMCIA and Compact Flash (CF) Interface drives all signals for two sockets (one for
PCMCIA and one for CF), without external buffering. The I/O buffers can drive signals at 3.3 V
and 5.0 V, or they can be turned off. The control logic and built-in buffers eliminate numerous
external "glue" and buffer/transceiver components, providing a highly integrated and low-power
solution for the creation of complete systems.
Pulse-Width-Modulated (PWM) Interface
Two PWM outputs provide brightness and contrast control suitable for an LCD display. These
function as 8-bit digital-to-analog (D-to-A) converters, with the addition of inexpensive external
filter components. When not used for PWM output, the pins may be used for GPIO.
AC-Link/I
2
S Serial Port for Audio
The full-duplex serial port for audio transfers serialized audio data to and from external devices
using AC-Link, I
2
S or "MSB-Justified" formats. The AC-Link fully supports AC'97 codec that
are compliant with AC-Link standard 1.03--some features added to later revision AC'97 codecs
may not be supported. For AC'97 codecs, digitized audio can pass in both directions
simultaneously using sample sizes up to 16 bits. For AC'97 codecs, the playback or audio out
(SA-1111 to codec) is fixed at 48 KHz. Variable-rate sampling for playback, which is not defined in
AC-Link standard 1.03, is not supported in hardware. The serial audio port supports variable
sample rates for incoming audio (codec to SA-1111). Codecs compliant with AC-Link standard
1.03 or later can select the incoming audio sample rate by software control.
The audio serial port also supports I
2
S or "MSB-Justified" mode
requirements. Sample rates for
I
2
S may be 8, 11.025, 16, 22.05, 32, or 44.1 KHz.
SSP* Serial Data Port
A full-duplex synchronous serial interface provides attachment to modem, telecom, and other
devices using serial protocols for data transfer. It supports National Microwire
*
, TI Synchronous
Serial Protocol (SSP)
*
, and Motorola Serial Peripheral Interface (SPI)
*
serial protocols. The SSP
Serial Data Port data FIFOs can be accessed by system-initiated transfers that use SRAM-like
block data moves by the system processor.
System Bus Interface
The SBI is the primary interface between the SA-1111 and the SA-1110 processor. Its connection to
the full SA-1110 system memory bus is used for transferring data between the host processor and
the SA-1111 internal functional blocks. The SBI is used for three types of transfer:
Register READs and WRITEs
SRAM-like single word transfers, initiated by the SA-1110 system processor.
Block-data READs and WRITEs
SRAM-like bursts across the system bus, initiated by the SA-1110 system processor. Block-
data transfers are used to fill or empty SRAM buffers serving the serial-port subsystems.
SA-1111 Brief Datasheet
5
SA-1111
DMA to System Memory
The Shared Memory Controller (SMC) performs DMA transfers in response to requests from
the USB Host Controller or the AC-Link/I
2
S serial audio port.
Shared Memory Controller
The SMC is a sub-unit of the SBI and responds to data transfer requests from the USB Host
Controller, or the AC-Link/I
2
S serial port for audio. The SMC translates these data read or write
cycles into DRAM cycles, supporting up to 128 Mbytes of EDO DRAM or SDRAM, with peak
bandwidth of 192 Mbytes/s.
System Overview
The SA-1111 provides a variety of I/O functions that enable complete systems to be built with very
little "glue" logic.
Figure 2
shows how the SA-1111 can be used with the SA-1110 in a handheld
computing device. The external display controller/graphics accelerator is optional, for higher
performance with an LCD display, or to enable simultaneous display to a video monitor.
For power parameters and physical characteristics, see the SA-1111 Linecard on Intel's website for
developers.
SA-1111
6
SA-1111 Brief Datasheet
Figure 2. System Block Diagram
A6881-01
PWM-b
Slot 2
Intel
StrongARM
SA-1111
Expansion Header
16Mx16
SDRAM
Test
Pods
SMC
91C96
Enet
Test
Pods
16Mx16
SDRAM
PCMCIA
Slot 1
UDA1341
I2S 16-Bit
Stereo Codec
AC97
Codec
PS/2a
PWM-a
USB
Host
SSP
USAR SPI
Key Coder
Matrix Keyboard Headers
Test
Pods
10B
T
4x5 Key Pad
Header
32 SMT
LEDs
8 Switch
Pack
8Mx16 Intel
Page Mode
Strata Flash
Socket
8Mx16 Intel
Page Mode
Strata Flash
Socket
Xceiver
Xceiver
Buffer
Max 3243
Header
RS232
9 Pin
RS232
Intel
StrongARM
*
SA-1111
Board
D15:0
D15:0
D15:0
D15:0
CPLD Debug
Registers
Lights
Switches
D7:0
D31:0
D31:0
D31:0
Address 25:0
Address 9:0
Address 5:2
PS/2b
3.5mm Jacks
* Other brands and names are the property of their respective owners.
UCB1300
POTS
Codec
RS232
IrDA
LCD CPLD data
formater for Sharp 3.9"
LCD analog support
for Sharp 3.9"
Intel
StrongARM
SA-1110
UDA1341
I2S 16 Bit
Stereo Codec
PA
L
Expansion Header
Gr
aphics Header
CF
T
ype II Slot
16Mx16
SDRAM
Power
Manager
USB stv
Batter
y
Batter
y
LCD Header
8Mx16
Intel
Page Mode
Strata Flash
16Mx16
SDRAM
Address
Decode Bus
Contrl. CPLD
8Mx16
Intel
Page Mode
Strata Flash
Xceiver
Xceiver
Buffer
Intel
StrongARM
*
SA-1110
CPU Board
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