mpc2605 Micro Electronics Corporation, mpc2605 Datasheet - Page 18

• Manufacturer Part Number: mpc2605
• Description: Integrated Secondary Cache Powerpc Microprocessors
• Manufacturer: Micro Electronics Corporation

MULTIPLE READ HITS (FAST L2 MODE)
Fast L2 mode, also called data streaming mode, are shown
in Figure 4. Note that CPU DBG is negated except for the
cycles coincident with the fourth TA of each data tenure. This
MPC2605
DH0 – DH31,
18
DL0 – DL31
L2 CLAIM
Back to back pipelined burst read hits for the MPC604 in
CPU DBG
A0 – A31
CPU BG
AACK
TBST
CLK
TS
TA
LEGEND
Signal driven to the MPC2605
Signal driven by the MPC2605
High–Z
1
A
A1
2
Figure 4. Multiple Burst Read Hits in Fast L2 Mode
A2
3
A3
4
B
A4
5
is a requirement for data streaming. Note also that DBB is
not shown. For proper operation in Fast L2 mode the DBB
pin of the MPC2605 must be tied to a pull–up resistor.
B1
6
B2
7
B3
8
C
B4
9
C1
10
C2
MOTOROLA
11
D
C3
12