PEB2085 SIEMENS [Siemens Semiconductor Group], PEB2085 Datasheet - Page 237

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

Note:
4.3.14
4.3.15
Value after reset:
WTC1, 2 Watchdog Timer Control 1, 2
TEM
PFS
Semiconductor Group
ST0/1 and SC0/1 are useful for synchronizing MP accesses and
receive/transmit operations.
7
Used only in terminal mode (SPCR:SPM = 0).
Contains the value received in the IOM channel B2, if programmed
(see C2C1, C2C0, SPCR register).
7
After the watchdog timer mode has been selected (STCR:TSF = CIX0:RSS = 1) the
watchdog timer is started.
During every time period of 128 ms the processor has to program the WTC1- and
WTC2-bit in the following sequence:
to reset and restart the watchdog timer.
If not, the timer expires and a WOV interrupt (EXIR) together with a reset pulse is ge-
nerated.
Test Mode
In test mode (TEM = 1, PFS = 0) all layer-1 functions are disabled and the ISAC
behaves like an ICC (PEB 2070) device.
Prefilter Select
B2 Channel Register
Additional Feature Register 1
WTC1
WTC2
00
H
1.
2.
TEM
PFS
WTC1
1
0
237
CSEL2
IOF/
B2CR
ADF1
WTC2
0
1
CSEL1
0/
Write
Read
CSEL0
0/
Register Description
ITF
Address 38
Address 38
0
0
H
H
®
-S