PSB2186N-V11TR Infineon Technologies, PSB2186N-V11TR Datasheet - Page 121

• 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

Figure 45
Timing of INT Pin
The INT line is switched with the rising edge of DCL. If no pending interrupts are internally
stored, a reading of ISTA respectively EXIR or CIR0 switches the INT line to high as indicated
in figure 45.
3.3
3.3.1
The IOM interface can be switched off in the inactive state, reducing power consumption to a
minimum. In this deactivated state the clock line is low and the data lines are high.
The IOM interface can be kept active while the S interface is deactivated by setting the CFS
bit to "0" (SQXR register). This is the case after a hardware reset. If the IOM interface should
be switched off while the S interface is deactivated, the CFS bit should be set to "1". In this
case the internal oscillator is disabled when no signal (info 0) is present on the S bus. If the TE
wants to activate the line, it has first to activate the IOM interface either by using the "Software
Power-Up" function (SPCR:SPU bit) or by setting the CFS bit to "0" again.
For the TE case the deactivation procedure is shown in figure 46. After detecting the code DIU
(Deactivate Indication Upstream, i.e. from TE to NT/LT-S) the layer 1 of the ISAC-S TE
responds by transmitting DID (Deactivate Indication Downstream) during subsequent frames
and stops the timing signals synchronously with the end of the last C/I (C/I0) channel bit of the
fourth frame.
Semiconductor Group
DCL
INT
RD
Control of Layer 1
Activation/Deactivation of IOM
®
Interface
121
Operational Description
ITD02388