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| 型號： | MC145572APB |
| 廠商： | Freescale Semiconductor |
| 文件頁數(shù)： | 24/52頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC ISDN INTERFACE TXCVER 44-LQFP |
| 標(biāo)準(zhǔn)包裝： | 160 |
| 類型： | 收發(fā)器 |
| 規(guī)程： | RS232 |
| 電源電壓： | 5V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 44-LQFP |
| 供應(yīng)商設(shè)備封裝： | 44-LQFP（10x10） |
| 包裝： | 托盤 |
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31
MC145572EVK
2.7
DIP SWITCH FUNCTIONS
Four sets of DIP switches are provided for MC145572EVK conguration and testing. These switches are
preset at the factory. In normal operation, the MC145572EVK is congured for IDL operation with the
MC68HC705 microcontroller communicating with the MC145572 U-Transceivers via the SCP interface.
NOTE
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.
2.7.1
NT Side GCI Parameters DIP Switch S1
This DIP switch is used to congure the time slot and input pins of the NT side MC145572 when it is
congured 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.
JP11
Short R21
JP12
Terminate Line with 135
W
JP13
Swaps Tx and Rx Pins at J16
JP14
Default Termination Impedance on S/T Transmit
JP15
Default Termination Impedance on S/T Receive
Table 2-6. NT Side GCI Parameters DIP Switch S3
DIP Switch
Function
Description
Factory
Setting
Open
Closed
S3-1
S0HI
S0LOW
Program NT side MC145572 GCI S0 time slot select pin.
S0HI
S3-2
S1HI
S1LOW
Program NT side MC145572 GCI S1 time slot select pin.
S1H1
S3-3
S2HI
S2LOW
Program NT side MC145572 GCI S2 time slot select pin.
S2HI
S3-4
GCI2048
GCI512
Select between 2.048 MHz and 512 kHz DCL clock when NT side MC145572 is in
GCI mode.
GCI2048
S3-5
IN1HI
IN1LOW
Used to select level on IN1 pin of MC145572 when NT side MC145572 is in GCI
mode.
IN2HI
S3-6
IN2HI
IN2LOW
Used to select level on IN2 pin of MC145572 when NT side MC145572 is in GCI
mode.
IN2HI
Table 2-5. NT and LT Side MC145572EVK Header List (Continued)
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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