MPC870 FREESCALE [Freescale Semiconductor, Inc], MPC870 Datasheet - Page 19

• Manufacturer Part Number: MPC870
• Description: Hardware Specifications
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

Bus Signal Timing
19
B28a
B28b
B28c
B28d
B29a
B29b
B29c
B29d
B29e
Num
B28
B29
CLKOUT rising edge to
WE(0:3)/BS_B[0:3] negated GPCM write
access CSNT = 0
(MAX = 0.00
CLKOUT falling edge to
WE(0:3)/BS_B[0:3] negated GPCM write
access TRLX = 0, CSNT = 1, EBDF = 0
(MAX = 0.25
CLKOUT falling edge to CS negated
GPCM write access TRLX = 0, CSNT = 1
ACS = 10 or ACS = 11, EBDF = 0
(MAX = 0.25
CLKOUT falling edge to
WE(0:3)/BS_B[0:3] negated GPCM write
access TRLX = 0, CSNT = 1 write access
TRLX = 0, CSNT = 1, EBDF = 1
(MAX = 0.375
CLKOUT falling edge to CS negated
GPCM write access TRLX = 0, CSNT = 1,
ACS = 10, or ACS = 11, EBDF = 1
(MAX = 0.375
WE(0:3)/BS_B[0:3] negated to D(0:31)
High-Z GPCM write access, CSNT = 0,
EBDF = 0 (MIN = 0.25
WE(0:3)/BS_B[0:3] negated to D(0:31)
High-Z GPCM write access, TRLX = 0,
CSNT = 1, EBDF = 0
(MIN = 0.50
CS negated to D(0:31) High-Z GPCM write
access, ACS = 00, TRLX = 0 & CSNT = 0
(MIN = 0.25
CS negated to D(0:31) High-Z GPCM write
access, TRLX = 0, CSNT = 1, ACS = 10,
or ACS = 11 EBDF = 0
(MIN = 0.50
WE(0:3)/BS_B[0:3] negated to D(0:31)
High-Z GPCM write access, TRLX = 1,
CSNT = 1, EBDF = 0
(MIN = 1.50
CS negated to D(0:31) High-Z GPCM write
access, TRLX = 1, CSNT = 1, ACS = 10,
or ACS = 11, EBDF = 0
(MIN = 1.50
×
×
×
×
×
×
×
×
Characteristic
×
×
B1 – 2.00)
B1 – 2.00)
B1 – 2.00)
B1 – 2.00)
B1 – 2.00)
B1 + 9.00)
B1 + 6.80)
B1 + 6.80)
B1 + 6.6)
B1 + 6.6)
PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE
MPC875/MPC870 Hardware Specifications, Rev. 3.0
Table 10. Bus Operation Timings (continued)
×
B1 – 2.00)
10.90 18.00 10.90 18.00 5.20 12.30 4.69
13.20
13.20
43.50
43.50
7.60 14.30 6.30 13.00 3.80 10.50 3.13
5.60
5.60
Min
—
—
—
33 MHz
14.30
18.00
Max
9.00
—
—
—
—
—
—
10.50
10.50
35.50
35.50
4.30
4.30
Min
—
—
—
40 MHz
13.00
18.00
Max
9.00
—
—
—
—
—
—
20.70
20.70
1.80
5.60
1.80
5.60
Min
—
—
—
66 MHz
10.50
12.30
Max
9.00
—
—
—
—
—
—
Freescale Semiconductor
16.75
16.75
1.13
4.25
1.13
4.25
Min
—
—
—
80 MHz
11.30
11.29
Max
9.00
9.93
9.93
—
—
—
—
—
—
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns