SAF82525 Infineon Technologies AG, SAF82525 Datasheet - Page 27

• Manufacturer Part Number: SAF82525
• Description: Data Communications ICs
• Manufacturer: Infineon Technologies AG

2.7 Transmit Data Flow
Two different types of frames can be transmitted:
as shown below.
Figure 9
Transmit Data Flow of HSCX
For I-frames (command XIF via CMDR register), the address and control fields are generated
autonomously by the HSCX and the data in the XFIFO is entered into the information field of
the frame. This is possible only, if the HSCX is operated in the auto-mode.
For transparent frames (command XTF via CMDR register), the address and the control fields
have to be entered in the XFIFO as well. This is possible in all operating modes and used also
in auto-mode for sending U-frames.
Semiconductor Group
–
–
Transmit
Transparent
Frame
(XTF)
Transmit
I-Frame
(XIF)
*1 Optional checkram handling in version 2 upward
I-frames and
transparent frames
FLAG
XAD1
ADDRESS
ADDR
XAD2
XFIFO
CONTROL
27
CTRL
XFIFO
DATA
CHECKRAM
CRC
*1
*1
ITD00229
SAB
SAB
SAB
SAB
SAF
SAF
SAF
SAF
FLAG
82525
82525
82526
82526
82525
82525
82526
82526