Nokia EKSOS Node Control Unit (NCU) 120 Ohms (T35010.11)¶

The Node Control Unit (NCU) contains a CPU environment for all of the common control functions inside the Nokia_EKSOS N20 node. The NCU contains the core functionalities such as the V5 control functions and node synchronisation. This unit also has a Q3 interface for network management and 4 x 2 Mbit/s interfaces for aggregate use. At least one NCU is always required in each Eksos N20 node.

Each Eksos N20 node can support up to four V5.2 interfaces and there must be at least one NCU per each V5.2 interface.

Photos¶

Connectors¶

Label	Designation (PCB)	Type	Description
4x 2M	NR1	Euroconnector C/2 (Harting 09232486821?)	E1 links of V5 interface
SR	J5/J11	RJ45	Sync In
TR	J6/J12	RJ45	Sync Out
Q1/AUX	J7	RJ45	?
Q1/AUX	J7	RJ45	?
ALRM	J7	RJ45	External Supervision
Q3	J7	RJ45	Q3 (Eth/802.2LLC/ISO/OSI) 10Base-T
Q3	J1	BNC	Q3 (Eth/802.2LLC/ISO/OSI) 10Base-2

SR / SYNC IN¶

Signal	Pin	Description
SYN R1A	4	Synchronisation receive
SYN R1B	5	Synchronisation receive

ST / SYNC OUT¶

Signal	Pin	Description
SYN T1A	1	Synchronisation transmit
SYN T1B	2	Synchronisation transmit

Q1/AUX¶

Signal	Pin	Description
Q1OCL+	1	Q1 output clock positive, idle state +5V
Q1OCL-	2	Q1 output clock nevative, idle state +0V
Q1OUT+	3	Q1 bus output positive V.11 signal, idle state +5V
Q1IN+	4	Q1 bus input positive V.11 signal, idle state +5V
Q1IN-	5	Q1 bus input negative V.11 signal, idle state 0V
Q1OUT-	6	Q1 bus output negative V.11 signal, idle state 0V
Q1ICL+	7	Q1 input clock positive, idle state +5V
Q1ICL-	8	Q1 input clock negative, idle state +0V

ALARM¶

Signal	Pin	Description
PAI1	1	External Alarm Input 1
PAI2	2	External Alarm Input 2
PAI3	3	External Alarm Input 3
PAIO1	4	External Alarm Input/Output 1
PAIO2	5	External Alarm Input/Output 2
IAV1	6	Analog Voltage Measurement Point 1
IAV2	7	Analog Voltage Measurement Point 2
GND	8	Ground

Main components¶

• 1x Motorola MC68MH360A125VL CPU/Controller
  • clocked at 32.768 MHz?
  • User Manual: MC68360UM.pdf
  • Tutorial: MC68360TUT.pdf
  • QMC Supplement: MC68MH360UM.pdf
  • Errata: MC68360UMAD.pdf
• 6x Sharp LH28F160S3HNS-S5 16Mbit Flash
  • Data sheet: LH28F160S3HNS.pdf
• 4x Samsung K4F151612D-TC6 1Mx16bit CMOS DRAM
  • Data sheet: K4F151612D.pdf

E1 Interface for V5¶

• 1x Exar XRT5897IV
  • 7-channel E1 line interface
  • Data Sheet: XRT5897.pdf
  • 4 interfaces exposed on 4x2M header
  • 1 intrface exposed on SR / ST (separate RX and TX?) RJ45

Q3 Ethernet 10-Base-2 Interface¶

• 1x MC68160AFB
  • Enhanced Ethernet Transceiver
  • Data Sheet: MC68160A.pdf
• 1x DP8392C
  • Coaxial Transceiver Interface
  • Data Sheet: DP8392C.pdf

Q1 Aux ALRM Q3 Interfaces¶

• 2x DS36954 quad RS-485 transceiver
  • Data Sheet: DS36954.pdf
• 1x MAX3223 RS232 transceiver
  • Data Sheet: MAX3222-MAX3241.pdf

Backplane interface¶

• LSI Logic LSA9360 BABYLON
• NEC uPD65842 CMOS GATE ARRAY
  • Data Sheet: uPD6842.pdf