User manual

39 GR-UT699 Development Board

User Manual

4.2 List of Oscillators, Switches and LED's

Name Function Description

X1 OSC_MAIN Main oscillator for ASIC DIL8 socket, 3.3V (75MHz as standard)

X2 OSC_ETH Oscillator for Ethernet PHY transceiver, SMD type, 3.3V, 25.000MHz

X3 OSC_SPW DIL8 socket for user installed SPW Clock Oscillator, 3.3V

Table 4-18: List and definition of Oscillators

Name Function Description

D1 POWER (3.3V) Power indicator

D2 ERRORN Leon processor in 'ERROR' mode

D3 DSUACT Leon Debug Support Unit 'Active'

D4 WDOG Watchdog indicator

D5 PROM_BUSY Prom Write/Erase in Progress

D12 DSU_ACTIVITY Bi-color LED indicating RX and TX activity on Serial DSU (USB) interface

Table 4-19: List and definition of PCB mounted LED's

Name Function Description

S1 RESET Push button RESET switch

S2 DSU_BREAK Push button DSU_BREAK switch

S3 PIO[7..0] 8 pole dip switch for PIO configuration – see Table 4-21

S4 PIO[15..8] 8 pole dip switch for PIO configuration – see Table 4-22

Table 4-20: List and definition of Switches

FUNCTION ASIC pin OPEN SWITCH CLOSED

PIO0 191 '1' 1 '0'

PIO1 192 '1' 2 '0'

PIO2 193 '1' 3 '0'

PIO3 194 '1' 4 '0'

PIO4 196 '1' 5 '0'

PIO5 197 '1' 6 '0'

PIO6 198 '1' 7 '0'

PIO7 199 '1' 8 '0'

Table 4-21: DIP Switch S3 'PIO[7..0]' definition