SAA7806H NXP [NXP Semiconductors], SAA7806H Datasheet - Page 57

• Manufacturer Part Number: SAA7806H
• Description: One chip automotive CD audio device
• Manufacturer: NXP [NXP Semiconductors]

Philips Semiconductors
9397 750 13697
Objective data sheet
Fig 36. Top level ARM hierarchy
INTERFACE
MEMORY
DRIVER
STATIC
UNIT
LCD
6.9.1 ARM7TDMI-S microcontroller
6.9 ARM7 system
DRIVER
LASER
AUDIO
DAC
The following diagram identifies the component parts which make up the system. The
following sections give you a top-level description of the individual blocks.
The ARM7TDMI-S processor is a member of the ARM family of 32-bit microcontrollers.
The ARM processor offers a high performance for low power consumption and low gate
count. The ARM architecture is based upon Reduced Instruction Set Computer (RISC)
principles. RISC provides the following key benefits:
Table 15:
[1]
The ARM7TDMI-S processor has 2 instruction sets:
The ARM uses a 3 stage pipeline to increase the throughput of the flow of instructions to
the processor. This allows several operations to operate simultaneously and the processor
and memory systems to operate continuously.
Process
technology
( m)
0.18
•
•
•
•
High instruction throughput
Excellent real time interrupt response.
The frequency of operation will depend on the performance required for the SAA7806 application and the
software complexity.
The 32-bit ARM instruction set
The 16-bit ARM Thumb instruction.
CONTROLLER
INTERFACE
HEADPHONE
DECODER
CHANNEL
VOLUME
Performance characteristics for ARM7TDMI-S
Performance
(MIPS/MHz)
0.9
INTERFACE
32 kB
ROM
Rev. 01 — 20 June 2005
AHB bus
VPB bus
I
2
S-BUS
ARM7TDMI-S
Power
consumption
(mW/MHz)
0.39
INTERFACE
RAM
4 kB
UART
Maximum
operating
frequency
(MHz)
67
AHB VPB
BRIDGE
CONTROLLER
One chip automotive CD audio device
INTERRUPT
Typical operating frequency
requirements for SAA7806
2 MHz
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
pDSIC
CORE
[1]
GPIO
SAA7806
I
2
C-BUS
001aab780
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