PEB2085 SIEMENS [Siemens Semiconductor Group], PEB2085 Datasheet - Page 228

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

FC2,1
ITF
Note:
4.2.16
Value after reset: 00
IMS
4.2.17
Value after reset:
SYN
SQR1-4 Received S/Q Bits
Semiconductor Group
FSC1,2 Control (TE mode only)
Determine the polarity of the symmetrical 8-kHz strobe signals FSC2 and FSC1, re-
spectively:
1: low during the first half, high during the second half.
Inter-Frame Time Fill
Selects the inter-frame time fill signal which is transmitted between HDLC frames.
0: idle (continuous 1 s).
1: flags (sequence of patterns: "0111 1110")
In TE and LT-T applications with D-channel access handling (collision resolution), the
only possible inter-frame time fill signal is idle (continuous 1 s). Otherwise the D
channel on the S/T bus cannot be accessed.
7
IOM Mode Selection
IOM-1 interface mode is selected when IMS = 0.
7
0: high during the first half of the 125- s frame (IOM, SLD, SSI), low during the se-
Additional Feature Register 2
S, Q Channel Receive Register
Synchronization State. Used in TE/LT-T mode only (pin M1 = 0).
The S/T receiver has synchronized to the received F
TE/LT-T mode (pin M1 = 0): Received S bits in frames 1, 6, 11 and 16,
respectively.
LT-S/NT mode (pin M1 = 1): Received F
respectively.
IMS
cond half.
0
0X
H
0
0
H
0
0
SYN
0
228
SQR1
0
ADF2
SQRR
A
bits in frames 1, 6, 11 and 16,
SQR2
0
Read/Write Address 39
Read
SQR3
A
and M bits (1) or not (0).
0
Register Description
SQR4
0
Address 3B
0
0
H
H