XC56309VF100A Freescale Semiconductor, XC56309VF100A Datasheet - Page 110
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XC56309VF100A
Manufacturer Part Number
XC56309VF100A
Description
IC DSP 24BIT FIXED-POINT 196-BGA
Manufacturer
Freescale Semiconductor
Series
DSP563xxr
Type
Fixed Pointr
Datasheet
1.XC56309AG100A.pdf
(284 pages)
Specifications of XC56309VF100A
Interface
Host Interface, SSI, SCI
Clock Rate
100MHz
Non-volatile Memory
ROM (576 B)
On-chip Ram
24kB
Voltage - I/o
3.30V
Voltage - Core
3.30V
Operating Temperature
-40°C ~ 100°C
Mounting Type
Surface Mount
Package / Case
196-MAPBGA
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
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Host Interface (HI08)
The host can transfer one byte at a time, so a 24-bit datum would be transferred using three store
(or load) byte operations, ensuring that the data byte at host bus address $7 is written last since
this causes the transfer of the data to the DSP-side HRX. However, the host bus controller may be
sophisticated enough that the host can transfer all bytes in a single operation (instruction). For
example, in the PowerPC MPC860 processor, the General-Purpose Controller Module (GPCM)
in the memory controller can be programmed so that the host can execute a single read (load
word, LDW) or write (store word, STW) instruction to the HI08 port and cause four byte
transfers to occur on the host bus. The 32-bit datum transfer shown in Figure 6-4 has byte data xx
written to HI08 address $4, byte aa to address $5, byte bb to address $6 and byte cc to address $7
(this assumes the 24-bit datum is contained in the lower 24 bits of the host’s 32-bit data register
as shown).
A similar operation occurs when the HI08 is initialized in Big Endian mode by clearing the Host
Little Endian bit (ICR[5] = HLEND). Big Endian mode is depicted in Figure 6-5.
6-10
Host side
Host side
DSP side
DSP side
internal register
internal register
Host 32-bit
Host 32-bit
Figure 6-4. HI08 Read and Write Operations in Little Endian Mode
Figure 6-5. HI08 Read and Write Operations in Big Endian Mode
HTX/HRX Bit Number: 23
HTX/HRX Register: 23
Host bus address:
Host bus address:
Low Byte
High Byte
xx
xx
DSP56309 User’s Manual, Rev. 1
$5
$5
cc
aa
cc
aa
aa
aa
bb
$6
bb
$6
bb
bb
bb
bb
aa
cc
$7
$7
aa
cc
cc
cc
0
0
(read/write last!)
(read/write last!)
Freescale Semiconductor
High Byte
Low Byte
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