MPC875 Freescale Semiconductor, Inc, MPC875 Datasheet - Page 21

• Manufacturer Part Number: MPC875
• Description: Mpc875 Powerquicc Integrated Communications Processor
• Manufacturer: Freescale Semiconductor, Inc

Freescale Semiconductor
B29d
B29e
B29g
B29h
B30a
B30b
Num
B30c
B29f
B29i
B30
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 × B1 – 2.00)
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 × B1 – 2.00)
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 × B1 – 6.30)
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 × B1 – 6.30)
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 × B1 – 3.30)
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 × B1 – 3.30)
CS, WE(0:3)/BS_B[0:3] negated to A(0:31),
BADDR(28:30) invalid GPCM write access
(MIN = 0.25 × B1 – 2.00)
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 × B1 – 2.00)
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 × B1 – 2.00)
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 = 1
(MIN = 0.375 × B1 – 3.00)
Characteristic
MPC875/MPC870 PowerQUICC™ Hardware Specifications, Rev. 4
7
Table 10. Bus Operation Timings (continued)
7
8
43.50
43.50
38.40
38.40
13.20
43.50
5.00
5.00
5.60
8.40
Min
33 MHz
Max
—
—
—
—
—
—
—
—
—
—
35.50
35.50
31.10
31.10
10.50
35.50
3.00
3.00
4.30
6.40
Min
40 MHz
Max
—
—
—
—
—
—
—
—
—
—
20.70
20.70
17.50
17.50
20.70
0.00
0.00
1.80
5.60
2.70
Min
66 MHz
Max
—
—
—
—
—
—
—
—
—
—
16.75
16.75
13.85
13.85
16.75
0.00
0.00
1.13
4.25
1.70
Min
80 MHz
Bus Signal Timing
Max
—
—
—
—
—
—
—
—
—
—
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
21