60x-Compatible Bus Protocols
MSC8113 Reference Manual, Rev. 0
Freescale Semiconductor
13-31
13.2.3.8 Extended Transfer Mode
The MSC8113 extended transfer mode improves bus performance. This mode should not be
confused with the extended bus protocol for direct-store operations in some earlier processors.
The MSC8113 device generates 5-byte, 6-byte, 7-byte, 16-byte, or 24-byte extended transfers.
These transactions are compatible with the 60x-compatible system bus, but some slaves or
masters do not support these features. To disable this type of transaction, clear BCR[ETM]. This
places the MSC8113 in strict 60x-Compatible bus mode. The following tables are extensions to
Table 13-16, Table 13-17, and Table 13-18.
Table 13-19 lists the bytes required on the data bus for extended read cycles. The 16-byte and
24-byte transfers are always 8-byte aligned and use a maximum 64-bit port size.
Table 13-20 lists the patterns of the extended data transfer for write cycles when the MSC8113
initiates an access. The 16-byte and 24-byte transfers are always 8-byte aligned and use a
maximum 64-bit port size.
Table 13-19. Data Bus Requirements for Extended Read Cycles
Transfer
Size
TSIZ[0–3]
Address
State
A[29–31]
Port Size/Data Bus Assignments
64-Bit 32-Bit
16-Bit
8-
Bit
0–7
8–15 16–23 24–31 32–39 40–47 48–55 56–63 0–7
8–15 16–23 24–31 0–7
8–15
0–7
5 Bytes
(0101)
000
OP0
OP1
OP2
OP3
OP4
—
—
—
OP0
OP1
OP2
OP3
OP0
OP1
OP0
011
—
—
—
OP3
OP4
OP5
OP6
OP7
—
—
—
OP3
—
OP3
OP3
6 Bytes
(0110)
000
OP0
OP1
OP2
OP3
OP4
OP5
—
—
OP0
OP1
OP2
OP3
OP0
OP1
OP0
010
—
—
OP2
OP3
OP4
OP5
OP6
OP7
—
—
OP2
OP3
OP2
OP3
OP2
7 Bytes
(0111)
000
OP0
OP1
OP2
OP3
OP4
OP5
OP6
—
OP0
OP1
OP2
OP3
OP0
OP1
OP0
001
—
OP1
OP2
OP3
OP4
OP5
OP6
OP7
—
OP1
OP2
OP3
—
OP1
OP1
Table 13-20. Data Bus Contents for Extended Write Cycles
Transfer
Size
TSIZ[0–3]
Address
State
A[29–31]
Data Bus Pattern
D[0–7]
D[8–15]
D[16–23]
D[24–31]
D[32–39]
D[40–47]
D[48–55]
D[56–63]
5 Bytes
(0101)
000
OP0
OP1
OP2
OP3
OP4
—
—
—
011
OP3
OP3
—
OP3
OP4
OP5
OP6
OP7
6 Bytes
(0110)
000
OP0
OP1
OP2
OP3
OP4
OP5
—
—
010
OP2
OP3
OP2
OP3
OP4
OP5
OP6
OP7
7 Bytes
(0111)
000
OP0
OP1
OP2
OP3
OP4
OP5
OP6
—
001
OP1
OP1
OP2
OP3
OP4
OP5
OP6
OP7
Содержание MSC8113
Страница 1: ...MSC8113 Reference Manual Tri Core 16 Bit Digital Signal Processor MSC8113RM Rev 0 May 2008 ...
Страница 20: ...MSC8113 Reference Manual Rev 0 xx Freescale Semiconductor Contents ...
Страница 28: ...MSC8113 Reference Manual Rev 0 xxviii Freescale Semiconductor ...
Страница 56: ...MSC8113 Reference Manual Rev 0 1 28 Freescale Semiconductor MSC8113 Overview ...
Страница 76: ...MSC8113 Reference Manual Rev 0 2 20 Freescale Semiconductor SC140 Core Overview ...
Страница 134: ...MSC8113 Reference Manual Rev 0 4 30 Freescale Semiconductor System Interface Unit SIU ...
Страница 168: ...MSC8113 Reference Manual Rev 0 6 18 Freescale Semiconductor Boot Program ...
Страница 180: ...MSC8113 Reference Manual Rev 0 7 12 Freescale Semiconductor Clocks ...
Страница 260: ...MSC8113 Reference Manual Rev 0 8 80 Freescale Semiconductor Memory Map ...
Страница 300: ...MSC8113 Reference Manual Rev 0 9 40 Freescale Semiconductor Extended Core ...
Страница 304: ...MSC8113 Reference Manual Rev 0 10 4 Freescale Semiconductor MQBus and M2 Memory ...
Страница 308: ...MSC8113 Reference Manual Rev 0 11 4 Freescale Semiconductor SQBus ...
Страница 544: ...MSC8113 Reference Manual Rev 0 16 46 Freescale Semiconductor Direct Memory Access DMA Controller ...
Страница 590: ...MSC8113 Reference Manual Rev 0 17 46 Freescale Semiconductor Interrupt Processing ...
Страница 614: ...MSC8113 Reference Manual Rev 0 18 24 Freescale Semiconductor Debugging ...
Страница 622: ...MSC8113 Reference Manual Rev 0 19 8 Freescale Semiconductor Internal Peripheral Bus IPBus ...
Страница 724: ...MSC8113 Reference Manual Rev 0 21 32 Freescale Semiconductor UART ...
Страница 920: ...MSC8113 Reference Manual Rev 0 25 150 Freescale Semiconductor Ethernet Controller ...
Страница 1171: ...MSC8113 Reference Manual Rev 0 Freescale Semiconductor C 61 EF wait_rts P 01077FFC 9F rts 71 ...
Страница 1172: ...MSC8113 Reference Manual Rev 0 C 62 Freescale Semiconductor MSC8113 Boot Code ...
Страница 1202: ...MSC8113 Reference Manual Rev 0 Index 30 Freescale Semiconductor Index ...