MC145572APB Freescale Semiconductor, MC145572APB Datasheet - Page 17

• 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

2.5
The MC145572EVK ISDN U-Interface Evaluation Kit provides TTL-compatible gated clocks for the B1,
B2, and D time slots to allow easy connection to a bit error rate tester. This is accomplished with the use
of glue logic. Access to these gated clock signals is through the 2 x 20 headers (J9 on the LT side and
J22 on the NT1 side). Figure 2-4 details the connections on both of these headers. The clocks are output
in either an 8- or 10-bit boundary mode at the IDL clock speed.
The MC145572EVK is shipped from the factory conÞgured so its gated clock outputs are derived from the
TSEN output, pin 25, gated with the DCL signal from the IDL2 interface. The 2B+D format is the IDL 10-bit
frame. It can be changed to IDL 8-bit frame format by setting BR7(b0) to a 1 in the appropriate U Transceiver.
MC145572EVK
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BIT ERROR ANALYZER INTERFACE
Figure 2-4. Access to Bit Error Analyzer Interface Through J22 and J9 Headers
NTSCPENL
STSCPENL
LTSCPENL
NTIDLCLK
NTFREFO
NTGTCLK
DGRANT
NTIDLRX
NTIDLTX
SCPCLK
NTSFAR
NTSFAX
NTFREF
NTIRQL
SCPRX
SCPTX
NTFSR
NTFSX
DREQ
IRQLT
Freescale Semiconductor, Inc.
39
For More Information On This Product,
1
J22 (NT)
40
2
Go to: www.freescale.com
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LTSCPENL
LTIDLCLK
LTFREFO
LTGTCLK
SCPCLK
LTIDLRX
EXTREF
LTIDLTX
LTFREF
LTSFAR
LTSFAX
SCPRX
LTIRQL
SCPTX
LTFSR
LTFSX
8 kHz
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1
J9 (LT)
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2
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