MPC875 Freescale Semiconductor, Inc, MPC875 Datasheet - Page 22

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

Bus Signal Timing
22
B30d
B31a
B31b
B31d
B32a
B32b
B32d
Num
B31c
B32c
B31
B32
B33
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
CLKOUT falling edge to CS valid as requested
by control bit CST4 in the corresponding word
in the UPM (MAX = 0.00 × B1 + 6.00)
CLKOUT falling edge to CS valid as requested
by control bit CST1 in the corresponding word
in the UPM (MAX = 0.25 × B1 + 6.80)
CLKOUT rising edge to CS valid, as requested
by control bit CST2 in the corresponding word
in the UPM (MAX = 0.00 × B1 + 8.00)
CLKOUT rising edge to CS valid, as requested
by control bit CST3 in the corresponding word
in the UPM (MAX = 0.25 × B1 + 6.30)
CLKOUT falling edge to CS valid as requested
by control bit CST1 in the corresponding word
in the UPM EBDF = 1
(MAX = 0.375 × B1 + 6.6)
CLKOUT falling edge to BS valid as requested
by control bit BST4 in the corresponding word
in the UPM (MAX = 0.00 × B1 + 6.00)
CLKOUT falling edge to BS valid as requested
by control bit BST1 in the corresponding word
in the UPM, EBDF = 0
(MAX = 0.25 × B1 + 6.80)
CLKOUT rising edge to BS valid, as requested
by control bit BST2 in the corresponding word
in the UPM (MAX = 0.00 × B1 + 8.00)
CLKOUT rising edge to BS valid, as requested
by control bit BST3 in the corresponding word
in the UPM (MAX = 0.25 × B1 + 6.80)
CLKOUT falling edge to BS valid as requested
by control bit BST1 in the corresponding word
in the UPM, EBDF = 1
(MAX = 0.375 × B1 + 6.60)
CLKOUT falling edge to GPL valid as
requested by control bit GxT4 in the
corresponding word in the UPM
(MAX = 0.00 × B1 + 6.00)
Characteristic
MPC875/MPC870 PowerQUICC™ Hardware Specifications, Rev. 4
Table 10. Bus Operation Timings (continued)
38.67
13.30 18.00 11.30 16.00
13.30 18.00 11.30 16.00
1.50
7.60
1.50
7.60
1.50
7.60
1.50
7.60
1.50
Min
33 MHz
14.30
13.80
14.30
14.30
Max
6.00
8.00
6.00
8.00
6.00
—
31.38
1.50
6.30
1.50
6.30
1.50
6.30
1.50
6.30
1.50
Min
40 MHz
13.00
12.50
13.00
13.00
Max
6.00
8.00
6.00
8.00
6.00
—
17.83
1.50
3.80
1.50
3.80
7.60
1.50
3.80
1.50
3.80
7.60
1.50
Min
66 MHz
10.50
10.00
12.30
10.50
10.50
12.30
Max
6.00
8.00
6.00
8.00
6.00
—
Freescale Semiconductor
14.19
1.50
3.13
1.50
3.13
4.69
1.50
3.13
1.50
3.13
4.49
1.50
Min
80 MHz
10.00
11.30
10.00
10.00
11.30
Max
6.00
8.00
9.40
6.00
8.00
6.00
—
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns