GRSPW datasheet(27/48 Pages) ACTEL

27 / 48 page

GRSPW / GRSPW-FT

December 2008, Version 1.0.2

GAISLER

Invalid Address (IA) - Set to one when a packet is received with an invalid destination address field,

i.e it does not match the nodeaddr register. Cleared when written with a one. Reset value: ‘0’.

Write synchronization Error (WE) - A synchronization problem has occurred when receiving N-

Chars. Cleared when written with a one. Reset value: ‘0’.

5RESERVED

Parity Error (PE) - A parity error has occurred. Cleared when written with a one. Reset value: ‘0’.

Disconnect Error (DE) - A disconnection error has occurred. Cleared when written with a one. Reset

value: ‘0’.

Escape Error (ER) - An escape error has occurred. Cleared when written with a one. Reset value: ‘0’.

Credit Error (CE) - A credit has occurred. Cleared when written with a one. Reset value: ‘0’.

Tick Out (TO) - A new time count value was received and is stored in the time counter field. Cleared

when written with a one. Reset value: ‘0’.

Table 17. GRSPW node address register

RESERVED

NODEADDR

31: 8

RESERVED

7: 0

Node address (NODEADDR) - 8-bit node address used for node identification on the SpaceWire

network. Reset value: 254.

Table 18. GRSPW clock divisor register

16 15

RESERVED

CLKDIVSTART

CLKDIVRUN

31: 16

RESERVED

15: 8

Clock divisor startup (CLKDIVSTART) - 8-bit Clock divisor value used for the clock-divider

during startup (link-interface is in other states than run). The actual divisor value is Clock Divi-

sor register + 1. Reset value: clkdiv10 input signal.

7: 0

Clock divisor run (CLKDIVRUN) - 8-bit Clock divisor value used for the clock-divider when the

link-interface is in the run-state. The actual divisor value is Clock Divisor register + 1. Reset value:

clkdiv10 input signal.

Table 19. GRSPW destination key

RESERVED

DESTKEY

31: 8

RESERVED

7: 0

Destination key (DESTKEY) - RMAP destination key. Only available if the rmap VHDL generic is

set to 1. Reset value: 0.

Table 16. GRSPW status register

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