motorola semiconductor technical data MC145576EVK advance information isdn single chip nt1 transceiver evaluation kit rev 1.1 flint mc145576 u idl scp fpga hc11 s/ scp mc145576dr mc145576ev rs23 f r e e s c a l e s e m i c o n d u c t o r , i freescale semiconductor, inc. f o r m o r e i n f o r m a t i o n o n t h i s p r o d u c t , g o t o : w w w . f r e e s c a l e . c o m n c . . .
2 MC145576EVK i. introduction the MC145576EVK board has been designed to demonstrate and evaluate the motorola single chip nt1 solution based on the flint (mc145576). the mc145576 is configured by default to work in a standard nt1 mode (see section iii), this configuration can be changed to provide a terminal access to the mc145576 which is required for the smart nt1 applications (see section iv). this terminal access can be idl/scp or gci. the MC145576EVK board is powered by an external 5v power supply, there is no power feeding circuitry which recovers the power from the u line. another connector can be used to provide +40v power supply down to the te through the s/t line (+40v and +5v power supplies have separated grounds). ii. MC145576EVK block diagram mc145576 flint line interface db25 digital bus switchs s/t loop u loop 12 leds 2 iii. mc145576 in nt1 mode in the nt1 mode, as there is no terminal access required and where the minimum possible power consumption is desired, the mc145576 will provide a u and s/t analog interfaces and some configuration and indication pins. switchs configuration: clk_sel no function eno_l off (logic high) led2 on led1 on class/echoin no function fix off fix mode, on adaptative mode f r e e s c a l e s e m i c o n d u c t o r , i freescale semiconductor, inc. f o r m o r e i n f o r m a t i o n o n t h i s p r o d u c t , g o t o : w w w . f r e e s c a l e . c o m n c . . .
3 idl/ gci on (gci mode) drq_ar off see note ps1 off ps1=1, on ps1=0 ps2 off ps2=1, on ps2=0 pulse 1 off /pulse1=1, on /pulse1=0 pulse 2 off /pulse2=1, on /pulse2=0 note: if activation request drq_ar need to be used, eno_l should be switch on. iv. flint in smart nt1 mode in the smart nt1 mode, the terminal access is required. this terminal access, plus some control and indication signals, are available on a db25 connector (p1). switchs configuration: clk_sel off 2.048 mhz , on 512 k hz eno_l on (logic low) led2 depending on the mode selected led1 depending on the mode selected class/echoin depending on the mode selected fix off fix mode, on adaptative mode idl/gci off idl/scp mode, on gci mode drq_ar depending on the mode selected ps1 depending on the mode selected ps2 depending on the mode selected pulse 1 depending on the mode selected pulse 2 depending on the mode selected note: off applies a logic high, on applies a logic low. motorola has designed a b oard (based on the hc11 and a fpga) and software (on pc) which can be directly connected to the MC145576EVK board. this board (mc145576drv) which works only in idl/scp mode, provides quick access to the internal registers and gated clocks. v. getting started jumpers configuration: jp8: jumper to short circuit the c13 capacitor. jp9: jumper to terminate the s/t loop transmit path with an 100 ohms resistor. jp10: jumper to terminate the s/t loop receive path with an 100 ohms resistor. getting started configure the mc145576 according the mode choosen, then switch on the +5v power supply and reset the mc145576. the board is ready. vi. reference manuals f r e e s c a l e s e m i c o n d u c t o r , i freescale semiconductor, inc. f o r m o r e i n f o r m a t i o n o n t h i s p r o d u c t , g o t o : w w w . f r e e s c a l e . c o m n c . . .
4 * mc145576 flint user ? s manual (mc145576/d). * mc145574 s/t interface user ? s manual (mc145574/d) . * mc145572 u interface user ? s manual (mc145572/d). * ccitt i.430 specification. * etsi etr 300 012 specification. * etsi etr 080 specification. * gci interface document writen by alcatel, italtel, gpt and siemens. vii. MC145576EVK layout top layer bottom layer f r e e s c a l e s e m i c o n d u c t o r , i freescale semiconductor, inc. f o r m o r e i n f o r m a t i o n o n t h i s p r o d u c t , g o t o : w w w . f r e e s c a l e . c o m n c . . .
m c145576evk/d f r e e s c a l e s e m i c o n d u c t o r , i freescale semiconductor, inc. f o r m o r e i n f o r m a t i o n o n t h i s p r o d u c t , g o t o : w w w . f r e e s c a l e . c o m n c . . .
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