saa7803 NXP Semiconductors, saa7803 Datasheet - Page 59
saa7803
Manufacturer Part Number
saa7803
Description
Saa7803 One Chip Cd Audio Device
Manufacturer
NXP Semiconductors
Datasheet
1.SAA7803.pdf
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Philips Semiconductors
9397 750 13695
Objective data sheet
6.9.4 RAM interface
6.9.5 I
6.9.6 General purpose I/Os
6.9.7 Interrupt controller
The RAM interface provides an interface between the onboard 32 kB SRAM memory and
the ARM via the AHB bus. The specification of this interface is:
This interface can be used as an I
I
The GPIOs are linked to the VLSI Peripheral Bus (VPB). This interface provides individual
control over each bidirectional pin. Each pin can be configured to be an input, output or
bidirectional:
2
2
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C-bus specification. The specification of this interface is:
•
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C-bus interface
32-bit AHB interface width
67 MHz maximum AHB operating frequency
Configured for low latency
1 kB memory word depth
32-bit data.
Master/slave configurations
Address 30h
67 MHz maximum AHB operating frequency
25 MHz I
4 byte RX FIFO depth
4 byte TX FIFO depth
Maximum I
Compatible with 7-bit and 10-bit addressing.
32 bidirectional I/Os.
12 dedicated internal interrupts
1 external interrupt which has programmable polarity
Two interrupt types available Interrupt Request (IRQ) and Fast Interrupt Request
(FIQ)
Interrupts can be defined as IRQ or FIQ
One of 16 priority levels can be assigned to an interrupt
Interrupt priority threshold level
All interrupts can be masked.
2
C-bus operating frequency
2
C-bus frequency of 400 kHz
Rev. 01 — 19 April 2005
2
C-bus slave or master and is fully compliant with the
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
One chip CD audio device
SAA7803
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