PEB2085 SIEMENS [Siemens Semiconductor Group], PEB2085 Datasheet - Page 211

• Manufacturer Part Number: PEB2085
• Description: ISDN SubscribernAccess Controller
• Manufacturer: SIEMENS [Siemens Semiconductor Group]

4.1.11
Value after reset: 00
RBC7-0 Receive Byte Count
4.1.12
4.1.13
Semiconductor Group
7
Eight least significant bits of the total number of bytes in a received message. Bits
RBC4-0 indicate the length of the data block currently available in the RFIFO, the
other bits (together with RBCH) indicate the number of whole 32-byte blocks
received.
If exactly 32 bytes are received RBCL holds the value 20
Used in auto-mode only.
XAD2 contains the second programmable address byte, whose function depends on
the selected address mode:
* 2-Byte Address Field
XAD2 is the low byte (TEI in the ISDN) of the 2-byte address field.
* 1-Byte Address Field
According to the X.25 LAPB protocol, XAD2 is the address of a response frame.
Note: See note to XAD1 register description.
7
When transparent mode 1 is selected, SAPR contains the value of the first address
byte of a receive frame.
Receive Frame Byte Count Low
Transmit Address 2
Received SAPI Register
7
RBC7
RBC6
H
RBC5
RBC4
211
RBC3
RBCL
XAD2
SAPR
RBC2
Read
Write
Read
RBC1
H
Register Description
.
RBC0
Address 25
Address 25
Address 26
0
0
0
H
H
H