PSB2186N-V11TR Infineon Technologies, PSB2186N-V11TR Datasheet - Page 30

• Manufacturer Part Number: PSB2186N-V11TR
• Description: IC ISDN SUBSCRIB ACCESS 44-PLCC
• Manufacturer: Infineon Technologies

Specifications of PSB2186N-V11TR

• Controller Type: Subscriber Access Controller (ISDN)
• Interface: 4-Wire SPI Serial
• Voltage - Supply: 4.75 V ~ 5.25 V
• Current - Supply: 17mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 44-PLCC
• Lead Free Status / RoHS Status: Request inventory verification / Request inventory verification
• Other names: PSB2186N-V11INTR; PSB2186N-V11TR

2.3.3
The microprocessor can access the B and IC (intercommunication) channels at the IOM-2
interface by reading the B1CR/B2CR or by reading and writing the C1R/C2R registers.
Furthermore it is possible to loop back the B channels from/to the S/T interface or to loop back
the IC channels from/to the IOM-2 interface without P intervention.
These access and switching functions are selected with the channel connect bits (CxC1,
CxC0) in the SPCR register (table 2, figure 13).
External B-channel sources (voice/data modules) connected to the IOM-2 interface can be
disconnected with the IOM off function (ADF1:IOF) in order to not disturb the B-channel access
(see figure 13).
If the B-channel access is used for transferring 64-kbit/s voice/data information directly from
the P port to the ISDN S/T interface, the access can be synchronized to the IOM interface by
means of a synchronous transfer interrupt programmed in the STCR register.
Table 2
C C1
0
0
1
1
Note: x=1 for channel 1 or 2 for channel 2
The general sequence of operations to access the B/IC channels is:
Semiconductor Group
P Access to B/IC Channels (IOM
SIN –
C C0
0
1
0
1
P Access to B and IC Channels
C R
Read
IC
IC
–
B
(set configuration register SPCR)
Program synchronous interrupt (ST0)
Read register (B CR, C R)
(write register)
Acknowledge SIN (SC0)
C R
Write Read
–
IC
B
B
B CR
B
B
B
–
®
-2)
Output
to
IOM-2
–
IC
B
B
30
Applications
B monitoring, IC monitoring
B monitoring, IC looping from/to IOM-2
B access from/to S
transmission of a constant value in
B channel to S
B looping from S
transmission of a variable pattern in
B channel to S
Functional Description
0
0
0
;
0
;