PSF21150 INFINEON [Infineon Technologies AG], PSF21150 Datasheet - Page 238

• Manufacturer Part Number: PSF21150
• Description: IPAC-X ISDN PC ADAPTER CIRCUIT
• Manufacturer: INFINEON [Infineon Technologies AG]

4.6.10
Value after reset: 00
RBCHB
OV ... Overflow
A ’1’ in this bit position indicates a message longer than (2
RBC8-11 ... Receive Byte Count
Four most significant bits of the total number of bytes in a received message (see
RBCLB register).
Note: Normally RBCHB and RBCLB should be read by the microcontroller after an RME-
4.6.11
Value after reset: 00
RAL1
RAL1 ... Receive Address Byte Low Register 1
The general function (READ/WRITE) and the meaning or contents of this register
depends on the selected operating mode:
– Non-auto mode (16-bit address):
– Non-auto mode (8-bit address):
Data Sheet
RAL1 can be programmed with the value of the first individual low address byte.
According to X.25 LAPB protocol, the address in RAL1 is recognized as COMMAND
address.
interrupt in order to determine the number of bytes to be read from the RFIFOB,
and the total message length. The contents of the registers are valid only after an
RME or RPF interrupt, and remain so until the frame is acknowledged via the RMC
bit or RRES.
7
7
RBCHB - Receive Frame Byte Count High B-Channels
RAL1 - RAL1 Register 1
0
H
H
0
.
0
OV
RAL1
238
RBC11
Detailed Register Description
12
- 1) = 4095 bytes .
0
0
RBC8
PSB 21150
PSF 21150
WR (77/87)
RD (77/87)
2000-07-21