COBHAM GR740 User Manual

GR740-UM-DS, Nov 2017, Version 1.7 109 www.cobham.com/gaisler
GR740
10.6.2 SDRAM configuration register 2
Table 96. 0x04 - SDCFG2 - SDRAM configuration register 2
31 30 29 24 16 15 14 13 12 0
R CE RESERVED E
N
2
T
D
C
S
B
P
A
R
K
RESERVED
0100000
r rw r rw rw rw* r
31 RESERVED
30 Clock enable (CE) - This value is driven on the CKE inputs of the SDRAM. Should be set to ‘1’ for
correct operation.
29: 16 RESERVED
15 Enable 2T signaling (EN2T)
14 Double chip select mode (DCS)
13 Bus parking enable (BPARK) - When this field is set to ’1’ the controller will start to drive the
SDRAM DQ bus eight cycles after the controller has entered idle mode. The value driven is the last
value read from the SDRAM bus. Bus parking is used to guarantee defined levels on the data bus
that would otherwise be left floating and avoids the need of external pull-ups on the data bus.
This functionality is only available in GR740 silicon revision 1. In revision 0 the field is read-only
and tied to ’0’.
12: 0 RESERVED

COBHAM GR740 Specifications

General

Brand	COBHAM
Model	GR740
Category	Computer Hardware
Language	English