SAB82525NV22XT Infineon Technologies, SAB82525NV22XT Datasheet - Page 74
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SAB82525NV22XT
Manufacturer Part Number
SAB82525NV22XT
Description
Manufacturer
Infineon Technologies
Datasheet
1.SAB82525NV22XT.pdf
(126 pages)
Specifications of SAB82525NV22XT
Operating Supply Voltage (typ)
5V
Operating Supply Voltage (min)
4.75V
Operating Supply Voltage (max)
5.25V
Operating Temp Range
0C to 70C
Operating Temperature Classification
Commercial
Mounting
Surface Mount
Pin Count
44
Lead Free Status / RoHS Status
Compliant
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The activities during frame transmission (supposed two frames, 18 bytes and 52 bytes) is
shown in figure 35.
Figure 35
Continuous Frames Transmission Sequence Example
DMA Mode
Prior to the data transmission, the length of the next frame to be transmitted must be
programmed via the Transmit Byte Count Registers (XBCH, XBCL). The resulting byte count
equals the programmed value plus one byte, i.e. since 12 bits are provided via XBCH, XBCL
(XBC11. . .XBC0) a frame length of 1 up to 4096 bytes (4 Kbytes) can be selected.
After this, data transmission can be initiated by command (XTF or XIF). The HSCX will then
autonomously request the correct amount of write bus cycles by activating the DRQT line.
Depending on the programmed frame length, block data transfers of
are requested everytime a 32-byte FIFO half (transmit pool) is empty and accessible to the
DMA controller.
Semiconductor Group
Serial
Interface
HSCX
CPU
Interface
n 32-bytes + remainder (n = 0, 1,…128)
18
. . .
WR
Bytes
ITF
XTF
XPR
XME
Frame 1
18
Bytes
32 Bytes
. . .
WR
XTF
74
XPR
20
32
. . .
WR
Bytes
Bytes
XTF
Frame 2
XPR
XTF + XME
20
Bytes
SAB 82525
SAB 82526
SAF 82525
SAF 82526
XPR
ITD00249
ITF
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