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INTEGRATED CIRCUITS
DATA SH EET
SAA8122
Digital Still Camera
Preliminary specification
Supersedes data of
File under Integrated Circuits, ICXX
1999 sep 01
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Philips Semiconductors Preliminary specification
Digital Still Camera SAA8122
FEATURES
• Support a wide range of CCD (VGA,SVGA,QGA,XGA,EQGA)
• Perform an advanced RGB to YUV conversion
• Support smart measurement unit to speed up the control loop (Focus, auto white balance,...)
• Support a wide range of LCD and TV format (NTSC and PAL) with text re-insertion features
• Support an embedded JPEG encoder/decoder unit.
• MIPS PR3001 CPU, running in a frequency range from 12 to 28 MHz.
• PRISC compatible PI-bus architecture, interrupt, power management, clock and reset architectures.
• Support a dedicated video bus and SDRAM memory for picture storage
• Support for ROM, DRAM,SRAM, flash and PC Card (Compact Flash and SSFDC).
• Integrated general purpose peripherals like a USB,FIR,UART, timers, an I2C transceiver, ADC converters, RTC and
IO ports.
EXTERNAL UNTERFACES
• a dedicated interface to IEEE 1394 devices (such as Philips’ PDI 1394 chip-set)
• two UART (RS-232) data ports withDMA capabilities (≤ 187.5kbit/s) including hardware flow control RxD, TxD, RTS,
CTS for modem support
• 32 general purpose, bidirectional I/O interface pins, the first 8 bits may also be used as interrupt inputs
• two PWM output (8 bit resolution)
CPU relqted features
• a 32-bit PR3001 core
• 1 KB (kilo byte) data cache and 4 KB instruction cache
• a programmable low-power mode, including wake-up on interrupt
• a memory management unit (TLB: translation lookaside buffer)
• two built in 24-bit general purpose timers and one 24-bit watchdog timer in coprocessor zero two built in 24-bit general
purpose timers
• a real-time clock unit (active in sleep mode)
• an on-chip 8 KBytes SRAM for storing code which needs fast execution
GENERAL DESCRIPTION
The DSC SAA8122E/C1 is a high performance, low power, single-chip MIPS based microprocessor which is dedicated
to image processing and compression.
The DSC SAA8122E/C1 is a highly complex integrated microprocessor system, consisting of one 32-bits RISC CPU
(PR3001), a BCU, an interrupt controller and a power management controller, a ROM/DRAM/SRAM/FLASH/PC-card
memory controller, a JPEG encoder/decoder, a Progammable Pulse Generator, a specific DSP for image processing,
an SDRAM memory controller, a number of standard peripheral modules (like IO ports, timers, a real-time clock, UART,
USB, FIR, and an I2C transceiver) and a Test Control Block module. The DSC is based on the PRISC (Philips RISC)
architecture framework.
The objective of the DSC SAA8122E/C1 is twofold. In the first place, the SAA8122E/C1 is design to propose to the
customer a one chip able to perform all treatments and connections required for a wide range of Digital Still Camera. In
the second place, the SAA8122E/C1 is design around a RISC CPU for which the development environment is already
available and validate to speed up the software development time.
1999 sep 01 2
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Philips Semiconductors Preliminary specification
Digital Still Camera SAA8122
SinceoneofthemainobjectivesoftheSAA8122E/C1isaddressingawiderangeofCCDsensors,aDSP(withadvanced
embedded algorithm) for camera signal processing is integrated with an high level of programmability for pulses
generation.
Another objective of the SAA8122E/C1 is to reach an high rate of picture compressed according to the JPEG standard.
So a JPEG codec block is also integrated in the chip
ORDERING INFORMATION
TYPE NUMBER
NAME DESCRIPTION VERSION
SAA8122E/C1 BGA316 316 pin plastic BGA package SOT531AA1
PACKAGE
1999 sep 01 3
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1999 sep 01 4
BLOCK DIAGRAM
Philips Semiconductors Preliminary specification
Digital Still Camera SAA8122
TCB
SDRAM
Controller
BCU
Peripheral
Controller
PR3001
CPU
controller
Interrupt
PLL CCD
FIR
USB
PC-Card
Controller
UART
Codec
JPEG
DRAM
memory
Controller
Static
memory
Controller
EBIU
PI
BCU
8K SRAM
CamDSPVDO
Slave Group Interface
GPIO +int
Timer
Timer
Timer
I2C
transceiver
GPIO
Four
RTC
Power
Management
controller
Analog
Digital
Controller
Fig.1 Block diagram
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Philips Semiconductors Preliminary specification
Digital Still Camera SAA8122
PACKAGE OUTLINE
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Philips Semiconductors Preliminary specification
Digital Still Camera SAA8122
SOLDERING
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Philips Semiconductors Preliminary specification
Digital Still Camera SAA8122
DEFINITIONS
Data sheet status
Objective specification This data sheet contains target or goal specifications for product development.
Preliminary specification This data sheet contains preliminary data; supplementary data may be published later.
Product specification This data sheet contains final product specifications.
Limiting values
Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one or
more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation
of the device at these or at any other conditions above those given in the Characteristics sections of the specification
is not implied. Exposure to limiting values for extended periods may affect device reliability.
Application information
Where application information is given, it is advisory and does not form part of the specification.
LIFE SUPPORT APPLICATIONS
These products are not designed for use in life support appliances, devices, or systems where malfunction of these
products can reasonably be expected to result in personal injury. Philips customers using or selling these products for
use in such applications do so at their own risk and agree to fully indemnify Philips for any damages resulting from such
improper use or sale.
1999 sep 01 7
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