tc59ym916bkg24a ETC-unknow, tc59ym916bkg24a Datasheet - Page 44

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

DQN15…0
DQN15…0
DQ15…0
RQ11
DQ15…0
Calibration Transactions
operation supported: calibration of the output current level I
observed after the last RQ packet (with command “CMD a” in this example). No request packets should be issued in
this period.
t
t
packet may then be issued (with command “CMD d” in this example).
COLX packet with a “CALC e” command starts a subsequent sequence.
the diagram.
does not use this sequence; termination calibration is performed during the manufacturing process. However, the
termination sequence shown will be issued by the controller for those memory components which do use a periodic
calibration mechanism.
example). No request packets should be issued during this period.
second period of t
period of t
request packet may be issued at edge T
COLX packet with a CALZ command occurs at edge T
the diagrams.
Figure 45. Calibration Transactions
RQ11
CALCE
CALE
…RQ0
…RQ0
CFMN
CFMN
Figure 45 shows the calibration transaction diagrams for the XDR DRAM device. There is one calibration
The output current calibration sequence is shown in the upper diagram. It begins when a period of t
A COLX packet with a “CALC b” command is then issued to start the current calibration sequence. A period of
A COLX packet with a “CALE c” command is then issued to end the current calibration sequence. A period of
A second current calibration sequence must be started within an interval of t
Note that the labels for the CFM clock edges (of the form Ti) are not to scale, and are used to identify events in
The dynamic termination calibration sequence is shown in the lower diagram. Note that this memory component
It begins when a period of t
A COLX packet with a CALZ command is then issued at edge T
A COLX packet with a CALE command is then issued at edge T
A second current calibration sequence must be started within an interval of t
Note that the labels for the CFM clock edges (of the form Ti) are not to scale, and are used to identify events in
CFM
CFM
−
CMD
T
CMD
CMD
CMD
is observed after this packet. No request packets should be issued during this period.
0
a
a
a
CALE-CMD
t
CMD-CALC
t
T
is observed after this packet. No request packets should be issued during this period. The first request
CMD-CALZ
1
T
2
CALZE
Packet a: Any CMD
Packet b: CALC
Packet c: CALE
Packet d: Any CMD
Packet e: CALC
Packet a: Any CMD
Packet b: CALZ
Packet c: CALE
Packet d: Any CMD
Packet e: CALZ
T
CALC
CALC
CALZ
is observed after this packet. No request packets should be issued during this period. The first
3
b
b
b
is observed after this packet. No request packets should be issued during this period.
T
4
t
t
t
CALCE
CALCE
CALZE
CMD-CALZC
T
CALE
CALE
CALE
6
c
c
c
T
7
12
t
(with command CMDd in this example).
t
t
is observed after the packet at edge T
T
CALE-CMD
CALE-CMD
CALE-CMD
8
T
9
TC59YM916BKG24A,32A,32B,40B,32C,40C
T
10
20
T
.
11
T
CMD
CMD
CMD
OL
12
d
d
d
t
each DQi and DQNi pin.
T
CALZ
13
t
3
CALC
6
to start the current calibration sequence. A
to end the current calibration sequence. A third
T
14
T
15
T
Termination Calibration Transaction
16
CALC
CALZ
0
T
Current Calibration Transaction
(with command CMDa in the
17
. In this example, the next
. In this example, the next
T
18
T
19
2004-12-15 44/76
T
CALC
CALC
CALZ
20
e
e
e
T
21
CMD
T
Rev 0.1
t
t
t
22
CYCLE
CYCLE
CYCLE
−
T
CALC
23
is