MPC870 FREESCALE [Freescale Semiconductor, Inc], MPC870 Datasheet - Page 20

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

Bus Signal Timing
20
B29g
B29h
B30a
B30b
B30c
B30d
Num
B29f
B29i
B30
WE(0:3/BS_B[0:3]) negated to D(0:31)
High-Z GPCM write access, TRLX = 0,
CSNT = 1, EBDF = 1
(MIN = 0.375
CS negated to D(0:31) High-Z GPCM write
access, TRLX = 0, CSNT = 1 ACS = 10 or
ACS = 11, EBDF = 1
(MIN = 0.375
WE(0:3)/BS_B[0:3] negated to D(0:31)
High-Z GPCM write access, TRLX = 1,
CSNT = 1, EBDF = 1
(MIN = 0.375
CS negated to D(0:31) (0:3) High-Z GPCM
write access, TRLX = 1, CSNT = 1,
ACS = 10 or ACS = 11, EBDF = 1
(MIN = 0.375
CS, WE(0:3)/BS_B[0:3] negated to
A(0:31), BADDR(28:30) invalid GPCM
write access
WE(0:3)/BS_B[0:3] negated to A(0:31),
BADDR(28:30) invalid GPCM, write
access, TRLX = 0, CSNT = 1, CS negated
to A(0:31) invalid 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 A(0:31)
Invalid GPCM BADDR(28:30) invalid
GPCM write access, TRLX = 1, CSNT = 1.
CS negated to A(0:31) invalid GPCM write
access TRLX = 1, CSNT = 1, ACS = 10, or
ACS == 11 EBDF = 0
(MIN = 1.50
WE(0:3)/BS_B[0:3] negated to A(0:31),
BADDR(28:30) invalid GPCM write
access, TRLX = 0, CSNT = 1. CS negated
to A(0:31) invalid GPCM write access,
TRLX = 0, CSNT = 1 ACS = 10,
ACS == 11, EBDF = 1
(MIN = 0.375
WE(0:3)/BS_B[0:3] negated to A(0:31),
BADDR(28:30) invalid GPCM write access
TRLX = 1, CSNT =1, CS negated to
A(0:31) invalid GPCM write access TRLX
= 1, CSNT = 1, ACS = 10 or 11, EBDF = 1
×
×
Characteristic
7
×
×
×
×
×
B1 – 2.00)
B1 – 2.00)
(MIN = 0.25
B1 – 6.30)
B1 – 6.30)
B1 – 3.30)
B1 – 3.30)
B1 – 3.00)
PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE
MPC875/MPC870 Hardware Specifications, Rev. 3.0
Table 10. Bus Operation Timings (continued)
×
B1 – 2.00)
38.40
38.40
13.20
43.50
38.67
5.00
5.00
5.60
8.40
Min
33 MHz
Max
—
—
—
—
—
—
—
—
—
31.10
31.10
10.50
35.50
31.38
3.00
3.00
4.30
6.40
Min
40 MHz
Max
—
—
—
—
—
—
—
—
—
17.50
17.50
20.70
17.83
0.00
0.00
1.80
5.60
2.70
Min
66 MHz
Max
—
—
—
—
—
—
—
—
—
Freescale Semiconductor
13.85
13.85
16.75
14.19
0.00
0.00
1.13
4.25
1.70
Min
80 MHz
Max
—
—
—
—
—
—
—
—
—
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns