MC145572FN Freescale Semiconductor, MC145572FN Datasheet - Page 108
![](/photos/36/49/364965/44pin_plcc_sml.jpg)
MC145572FN
Manufacturer Part Number
MC145572FN
Description
Manufacturer
Freescale Semiconductor
Datasheet
1.MC145572FN.pdf
(264 pages)
Specifications of MC145572FN
Number Of Line Interfaces
1
Control Interface
HDLC
Package Type
PLCC
Lead Free Status / Rohs Status
Not Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MC145572FN
Manufacturer:
MOT
Quantity:
5 510
Part Number:
MC145572FN
Manufacturer:
PLCC44
Quantity:
20 000
- Current page: 108 of 264
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5–36
INTERFACE
CONTROL
IDL2 OR GCI
INTERFACE
D out
D in
CONTROL PORT
CONTROLLER
INTERFACE &
PROCESSOR
CONTROLLER
AUTOMATIC
ACTIVATION
D CHANNEL
AUTOMATIC
REGISTER
Procedure to turn off analog loopback when the NT/LT pin is connected to V DD (NT mode).
Procedure to enable analog loopback when the NT/LT pin is connected to V SS (LT mode).
AND GCI
FIFO
FIFO
eoc
IDL2
Rx
Tx
Once the MC145572 has activated, NR1 reads as $B.
BR10 = $01
OR8 = $00
OR9 = $00
BR10 = $00
BR8(b0) = 0
If the application software asserts any reset to the MC145572 prior to initiating the loopback,
wait 5 seconds after deasserting the reset to allow the PLL to stabilize.
BR10 = $01
OR8 = $22
OR9 = $20
BR10 = $00
Once the MC145572 has activated, NR1 reads as $B.
2B + D
2B + D
SUPERFRAME
Freescale Semiconductor, Inc.
FRAMER
Figure 5–37. External Analog Loop
For More Information On This Product,
Enable Overlay Register set.
Turn off SFAX pin (only required for applications that do not
have the 10 k
Turn off Analog Loopback bit.
Disable Overlay Register set.
Enable Overlay Register set.
Enable SFAX pin as output (only required for applications that
do not have the 10 k
Enable Analog Loopback.
Disable Overlay Register set.
SUPERFRAME
DEFRAMER
Go to: www.freescale.com
MC145572
Pulldown Resistor).
OSCILLATOR / PLL
CRYSTAL
DAC
EQUALIZER
RECOVERY
FEEDBACK
DECISION
SLICER
TIMING
Pulldown Resistor).
Tx FILTER
b
CANCELLER
ack Block Diagram
FILTER
ECHO
ADC
Rx
-
XTAL in
XTAL out
DRIVER
Tx
INTERFACE
EXTERNAL
TxP
TxN
RxP
RxN
LINE
MOTOROLA
U INTERFACE
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