saa7803 NXP Semiconductors, saa7803 Datasheet - Page 60
saa7803
Manufacturer Part Number
saa7803
Description
Saa7803 One Chip Cd Audio Device
Manufacturer
NXP Semiconductors
Datasheet
1.SAA7803.pdf
(74 pages)
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Philips Semiconductors
7. Code development
9397 750 13695
Objective data sheet
6.9.8 Universal asynchronous receiver transceiver
7.1 Memory
The SAA7803 is the firmware development platform for the SAA7804 and SAA7806
devices.
given in the following sections.
The development memories are organized differently from the SAA7804 and SAA7806
ARM ROM, the address range is identical i.e. 8 kB locations but the development
memories are 16 bits wide rather than the 32-bit width of the ARM ROM. The SMIU
compensates for this variation in location widths, avoiding the need for different address
ranges between the software for the mask programmable ARM ROM and the
development software. Pin INT_EX_ROM is used to select between the onboard ARM
ROM memory and the MCMs external memories.
Fig 37. Multichip module concept
•
•
•
•
4 byte TX FIFO depth
4 byte RX FIFO depth
Both RX and TX can have specific fill levels set before an interrupt is triggered
Format of data character to be transmitted or received can be defined.
Figure 37
INT_EX_ROM
TRST_N
indicates the concept behind the MCM architecture. Further detail is
TMS
TCK
TDI
Rev. 01 — 19 April 2005
SAA7803
INTERFACE
ARM
AHB
PARALLEL
SERIAL
JTAG
SMIU
ARM
ROM
TO
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.
One chip CD audio device
0.25 MBIT
0.25 MBIT
FLASH
SRAM
ROM
001aab782
SAA7803
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