saa7715ah-n102 NXP Semiconductors, saa7715ah-n102 Datasheet - Page 16
saa7715ah-n102
Manufacturer Part Number
saa7715ah-n102
Description
Saa7715ah Digital Signal Processor
Manufacturer
NXP Semiconductors
Datasheet
1.SAA7715AH-N102.pdf
(36 pages)
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Philips Semiconductors
9.5
The SAA7715AH has a 1.5 kbyte PRAM to store the DSP
instruction code into. Also a 2 kbyte PROM is on-chip
available and can be accessed (memory mapped) without
the need of selecting the PROM or PRAM. The DSP
instruction code can be downloaded into the PRAM via the
I
and 6 respectively.
Table 7 Data word alignment
2003 Mar 13
2
I
I
I
I
I
2
2
2
2
2
C-bus. The write and read cycle are shown in Figs 5
C-bus
C-bus
C-bus
C-bus
C-bus
Digital Signal Processor
SOURCE
Program RAM
DSP-PRAM
DSP and general control
I
DSP-XRAM
DSP-YRAM
2
C-bus registers
DESTINATION
MBBB BBBB BBBB BBBB BBBB BBBB BBBB BBBL
MBBB BBBB BBBB BBBB BBBB BBBL
MBBB BBBB BBBB BBBB BBBB BBBL
MBBB BBBB BBBB BBBB BBBB BBBL
XXXX MBBB BBBB BBBL
16
The DSP has an instruction word width of 32 bits which
means that this space should be accessed with 4 bytes in
consecutive order and does have the auto-increment
function.
9.6
It is possible to transfer data via the I
destination where it can have different data word length.
Those destinations with data word are shown in Table 7.
DATA WORD
Data word alignment
Preliminary specification
SAA7715AH
2
C-bus to a
(NUMBER)
BYTES
4
3
3
3
2
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