tc59ym916bkg24a ETC-unknow, tc59ym916bkg24a Datasheet - Page 13

• Manufacturer Part Number: tc59ym916bkg24a
• Description: The Second Generation 512-megabit Xdrtm Dram
• Manufacturer: ETC-unknow

specifying the refresh row (12 bits in all) are implemented in the REFr registers - the rest are reserved. Note also
that the RA2…RA0 field that specifies the refresh bank address is also referred to as BR2…BR0. See “Refresh
Transactions” on page 40.
command. There are four variations of PRE (precharge) command. Each uses the BP field to specify the bank to be
precharged. Each also specifies a different delay of up to 3*t
may be specified in addition to a refresh command using the ROP field.
The CALC and CALE commands perform calibration operations to ensure signal integrity on the Channel. See
“Calibration Transactions” on page 42.
POP [2:0]
XOP [3:0]
The REFH/M/L registers are also referred to as the REFr registers. Note that only the bits that are needed for
Table 5 shows the POP field encoding in the ROWP packet. The first encoding specifies a NOPP (no operation)
Table 6 shows the XOP field encoding in the COLX packet. This field encodes the remaining commands.
The PDN command causes the device to enter a power-down state. See “Power State Management” on page 43.
0000
0001
0010
0100
0101
0011
0110
0111
000
001
010
100
101
011
110
111
Command
Command
NOPP
PRE0
PRE1
PRE2
PRE3
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
No operation
Reserved.
Reserved.
Reserved.
Row precharge command – Bank BP2… BP0 is precharged. This command is delayed by 0*t
Row precharge command – Bank BP2… BP0 is precharged. This command is delayed by 1*t
Row precharge command – Bank BP2… BP0 is precharged. This command is delayed by 2*t
Row precharge command – Bank BP2… BP0 is precharged. This command is delayed by 3*t
Reserved
Reserved.
Reserved.
Reserved.
Reserved.
Reserved.
Reserved
Reserved
Command and Description
Table 5. POP Field Encoding Summary
Table 6. XOP Field Encoding Summary
TC59YM916BKG24A,32A,32B,40B,32C,40C
CYCLE
XOP [3:0]
Description
1000
1001
1010
1011
1100
1101
1110
1111
using the POP [1:0] field. A precharge command
Command
CALC
CALZ
CALE
PDN
⎯
⎯
⎯
⎯
Current calibration command.
Impedance calibration command.
End calibration command (CALC).
Reserved.
Enter Power Down power state.
Reserved
Reserved
Reserved.
Command and Description
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CYCLE
CYCLE
CYCLE
CYCLE
Rev 0.1
.
.
.
.