MC145572APB Freescale Semiconductor, MC145572APB Datasheet - Page 30

• Manufacturer Part Number: MC145572APB
• Description: IC ISDN INTERFACE TXCVER 44-LQFP
• Manufacturer: Freescale Semiconductor
• Type: Transceiverr

Specifications of MC145572APB

• Protocol: RS232
• Voltage - Supply: 5V
• Mounting Type: Surface Mount
• Package / Case: 44-LQFP
• Number Of Line Interfaces: 1
• Control Interface: HDLC
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Number Of Drivers/receivers: -
• Lead Free Status / Rohs Status: Not Compliant

2.7
Four sets of DIP switches are provided for MC145572EVK conÞguration and testing. These switches are
preset at the factory. In normal operation, the MC145572EVK is conÞgured for IDL operation with the
MC68HC705 microcontroller communicating with the MC145572 U-Transceivers via the SCP interface.
2.7.1
This DIP switch is used to conÞgure the time slot and input pins of the NT side MC145572 when it is
conÞgured for GCI mode by setting S4-4 to the GCI position. In normal operation, S4-4 is in the IDL position
and the settings of this DIP switch do not affect operation of the MC145572EVK.
DIP Switch
S3-1
S3-2
S3-3
S3-4
S3-5
S3-6
JP11
JP12
JP13
JP14
JP15
When a DIP switch is in the open position, the signal is at a logic 1. When a DIP switch is
in the closed position, the signal is at a logic 0.
DIP SWITCH FUNCTIONS
NT Side GCI Parameters DIP Switch S1
GCI2048
Open
IN1HI
IN2HI
S0HI
S1HI
S2HI
Short R21
Terminate Line with 135 W
Swaps Tx and Rx Pins at J16
Default Termination Impedance on S/T Transmit
Default Termination Impedance on S/T Receive
Function
IN1LOW
IN2LOW
S0LOW
S1LOW
S2LOW
GCI512
Closed
Table 2-5. NT and LT Side MC145572EVK Header List (Continued)
Freescale Semiconductor, Inc.
For More Information On This Product,
Table 2-6. NT Side GCI Parameters DIP Switch S3
Program NT side MC145572 GCI S0 time slot select pin.
Program NT side MC145572 GCI S1 time slot select pin.
Program NT side MC145572 GCI S2 time slot select pin.
Select between 2.048 MHz and 512 kHz DCL clock when NT side MC145572 is in
GCI mode.
Used to select level on IN1 pin of MC145572 when NT side MC145572 is in GCI
mode.
Used to select level on IN2 pin of MC145572 when NT side MC145572 is in GCI
mode.
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NOTE
Description
MC145572EVK
GCI2048
Factory
Setting
S1H1
IN2HI
IN2HI
S0HI
S2HI
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