PSB2186N-V11TR Infineon Technologies, PSB2186N-V11TR Datasheet - Page 71

• Manufacturer Part Number: PSB2186N-V11TR
• Description: IC ISDN SUBSCRIB ACCESS 44-PLCC
• Manufacturer: Infineon Technologies

Specifications of PSB2186N-V11TR

• Controller Type: Subscriber Access Controller (ISDN)
• Interface: 4-Wire SPI Serial
• Voltage - Supply: 4.75 V ~ 5.25 V
• Current - Supply: 17mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 44-PLCC
• Lead Free Status / RoHS Status: Request inventory verification / Request inventory verification
• Other names: PSB2186N-V11INTR; PSB2186N-V11TR

2.7.4
A 2 32 byte FIFO buffer (transmit pools) is provided in the transmit direction.
If the transmit pool is ready (which is true after an XPR interrupt or if the XFW bit in STAR is
set), the CPU can write a data block of up to 32 bytes to the transmit FIFO. After this, data
transmission can be initiated by command.
Two different frames types can be transmitted:
– Transparent frame (command: XTF), or
– I frames (command: XIF)
as shown in figure 34.
For transparent frames, the whole frame including address and control field must be written to
the XFIFO.
Figure 34
Transmitter Data Flow
The transmission of I frames is possible only if the ISAC-S TE is operating in the auto-mode.
The address and control field is autonomously generated by the ISAC-S TE and appended to
the frame, only the data in the information field must be written to the XFIFO.
Semiconductor Group
HDLC Frame
Transmit I-Frame
(XIF)
Auto Mode,8
Transmit I-Frame
(XIF)
Auto Mode,
Transmit Transparent
Frame (XTF)
All Modes
-
Transmission of Frames
16
-
Bit Addr.
-
Bit Addr.
Note: Length of Control Field is b or 16
Description of Symbols:
Flag
Flag
Flag
Flag
XAD1
Generated automatically by ISAC
Written initially by CPU
Loaded (repeatedly)
request
Address
XAD1
XAD2
(XPR Interrupt)
Control
Control
Control
71
XFIFO
by CPU upon ISAC
Bit
(Info Register)
Information
XFIFO
XFIFO
R
-S TE
R
-S TE
Functional Description
CRC
CRC
CRC
CRC
Flag
Flag
Flag
Flag
ITD05667