Freescale Semiconductor MPC5200B ユーザーズマニュアル
MPC5200B Users Guide, Rev. 1
11-4
Freescale Semiconductor
ATA Register Interface
11.3.1.4
ATA PIO Timing 2 Register—MBAR + 0x3A0C
11.3.1.5
ATA Multiword DMA Timing 1 Register—MBAR + 0x3A10
Bits
Name
Description
0:7
pio_t0
PIO cycle time count value is based on system clock operating frequency.
8:15
pio_t2_8
PIO read/write pulse width for 8-bit transfers. Count value is based on system clock
operating frequency.
operating frequency.
16:23
pio_t2_16
PIO read/write pulse width for 16-bit transfers. Count value is based on system clock
operating frequency.
operating frequency.
24:31
—
Reserved
Table 11-4. ATA PIO Timing 2 Register
msb 0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
R
pio_t4
pio_t1
W
RESET:
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31 lsb
R
pio_ta
Reserved
W
RESET:
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Bits
Name
Description
0:7
pio_t4
PIO write (DIOW) data hold time. Count value is based on system clock operating frequency.
8:15
pio_t1
Address valid to DIOR/DIOW setup. Count value is based on system clock operating
frequency.
frequency.
16:23
pio_ta
IORDY setup time. Count value is based on system clock operating frequency.
24:31
—
Reserved
Table 11-5. ATA Multiword DMA Timing 1 Register
msb 0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
R
dma_t0
dma_td
W
RESET:
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31 lsb
R
dma_tk
dma_tm
W
RESET:
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0