Internet Data Sheet
HY[B/I]18T256[40/80/16]0A[C/F](L)
256-Mbit Double-Data-Rate-Two SDRAM
Field
Bits Type1)
Description
RTT
6,2
w
Nominal Termination Resistance of ODT
Note: See Table 22 “ODT DC Electrical Characteristics” on Page 28
00B RTT ∞ (ODT disabled)
01B RTT 75 Ohm
10B RTT 150 Ohm
11B RTT 50 Ohm
DIC
DLL
1
0
w
w
Off-chip Driver Impedance Control
0B
1B
DIC Full (Driver Size = 100%)
DIC Reduced
DLL Enable
0B
1B
DLL Enable
DLL Disable
1) w = write only register bits
Rev. 1.50, 2007-12
21
03062006-7M17-PXBC