PEB2085 SIEMENS [Siemens Semiconductor Group], PEB2085 Datasheet - Page 242

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

4.3.20
Value after reset:
IDC
Note:
CFS
Semiconductor Group
7
IOM Direction Control
Terminal mode (SPCR:SPM = 0):
0: Master (normal) mode
1: Slave (test) mode
Non-terminal mode (SPCR:SPM = 1):
0: normal mode
1: reversed (test) mode
Also refer to chapter 2.4.2
Configuration Select
This bit determines clock relations and recovery on S/T and IOM interfaces.
TE Mode
0: The IOM interface clock and frame signals are always active, "Power Down" state
S, Q Channel Transmit Register
IDC
Layer 2 transmits IOM channel 0 and 2 on IDP1, channel 1 on IDP0.
Layer 2 transmits IOM channel 0, 1 and 2 on IDP1.
MONITOR, D- and C/I channels are transmitted on IDP1 from layer 2
to layer 1.
MONITOR, D- and C/I channels are transmitted on IDP0 from layer 2
to the system.
included.
The states "Power Down" and "Power Up" are thus functionally identical except
for the indication: PD = 1111 and PU = 0111.
With the C/I command Timing (TIM) the processor can enforce the "Power Up"
state.
With C/I command Deactivation Indication (DIU) the "Power Down" state is
reached again.
However, it is also possible to activate the S-Interface directly with the C/I
command Activate Request (AR 8/10/L) without the TIM command.
TE/LT-T mode (pin M1 = 0): 0F
LT-S/NT mode (pin M1 = 1): 00
CFS
CI1E
SQIE
242
SQX1
SQXR
H
H
SQX2
Write
SQX3
Register Description
SQX4
Address 3B
0
H