SYSTEM CONTROLLER
S3C2416X RISC MICROPROCESSOR
2-36
8.7 BUS
CONFIGURATION
REGISTER
(BUSPRI0, BUSPRI1, AND BUSMISC)
To improve AHB bus performance, software must control the arbitration scheme and type.
Register
Address
R/W
Description
Reset Value
BUSPRI0 0x4C00_0050
R/W
Bus
priority control register 0
0x0000_0000
S3C2416 consists of 2 hierarchical AHB buses. The arbitration priority and order can be configured with BUSPRI0
registers. You can see specific priority number that assigned to each AMBA master in User’s Manual section ‘04-
BUS PRIORITIES’. The number of masters of AHB-S and AHB-I bus is 16 and 9 respectively.
Each TYPE field of BUSPRI0 register has three possible choices as follows:
1. 2’b00: the fixed type
2. 2’b01: the last granted maser has the lowest priority
3. 2’b10: the rotated type
4. 2’b11:
undefined
BUSPRI0
Bit
Description
Initial
Value
RESERVED [31:16] -
0x0000
TYPE_S
[15:14] Priority type for AHB-System bus
0x0
RESERVED [13:12] -
0x0
ORDER_S
[11:8]
Fixed priority order for AHB-S bus
Value Priority Value
Priority
4’h0 0-1-2-3-4-5-6-7-8-9-10-
11-12-13-14-15
4’h8 8-9-10-11-12-13-14-15-0-
1-2-3-4-5-6-7
4’h1 1-2-3-4-5-6-7-8-9-10-11-
12-13-14-15-0
4’h9 9-10-11-12-13-14-15-0-1-
2-3-4-5-6-7-8
4’h2 2-3-4-5-6-7-8-9-10-11-12-
13-14-15-0-1
4’ha 10-11-12-13-14-15-0-1-2-
3-4-5-6-7-8-9
4’h3 3-4-5-6-7-8-9-10-11-12-0-
1-2
4’hb 11-12-13-14-15-0-1-2-3-
4-5-6-7-8-9-10
4’h4 4-5-6-7-8-9-10-11-12-13-
14-15-0-1-2-3
4’hc 12-13-14-15-0-1-2-3-4-5-
6-7-8-9-10-11
4’h5 5-6-7-8-9-10-11-12-13-14-
15-0-1-2-3-4
4’hd 13-14-15-0-1-2-3-4-5-6-
7-8-9-10-11-12
4’h6 6-7-8-9-10-11-12-13-14-
15-0-1-2-3-4-5
4’he 14-15-0-1-2-3-4-5-6-7-8-
9-10-11-12-13
4’h7 7-8-9-10-11-12-13-14-15-
0-1-2-3-4-5-6
4’hf 15-0-1-2-3-4-5-6-7-8-9-
10-11-12-13-14
0x0
TYPE_I
[7:6]
Priority type for AHB-Image bus
0x0
RESERVED [5:3] -
0x0
Содержание S3C2416
Страница 33: ...S3C2416X RISC MICROPROCESSOR PRODUCT OVERVIEW 1 5 3 BLOCK DIAGRAM Figure 1 1 S3C2416X Block Diagram ...
Страница 38: ...PRODUCT OVERVIEW S3C2416X RISC MICROPROCESSOR 1 10 153 AIN 1 U14 195 EINT 10 GPG2 K15 237 SDATA 14 C18 ...
Страница 122: ...BUS MATRIX EBI S3C2416X RISC MICROPROCESSOR 3 4 NOTES ...
Страница 204: ...DMA CONTROLLER S3C2416X RISC MICROPROCESSOR 8 18 NOTES ...
Страница 284: ...WATCHDOG TIMER S3C2416X RISC MICROPROCESSOR 11 6 NOTES ...
Страница 320: ...REAL TIME CLOCK S3C2416X RISC MICROPROCESSOR 13 16 NOTES ...
Страница 344: ...UART S3C2416X RISC MICROPROCESSOR 14 24 NOTES ...
Страница 380: ...USB2 0 DEVICE S3C2416X RISC MICROPROCESSOR 16 34 NOTES ...
Страница 432: ...2D S3C2416X RISC MICROPROCESSOR 18 38 NOTES ...
Страница 446: ...HS_SPI CONTROLLER S3C2416X RISC MICROPROCESSOR 19 14 NOTES ...
Страница 455: ...S3C2416X RISC MICROPROCESSOR HSMMC CONTROLLER 20 9 4 9 SD COMMAND ISSUE SEQUENCE Figure 20 9 Timeout Setting Sequence ...
Страница 604: ...S3C2416X RISC MICROPROCESSOR S3C2416X RISC MICROPROCESSOR 23 22 NOTES ...
Страница 638: ...PCM AUDIO INTERFACE S3C2416X RISC MICROPROCESSOR 25 18 NOTES ...
Страница 653: ...S3C2416X RISC MICROPROCESSOR ELECTRICAL DATA 26 15 Figure 26 14 SDRAM READ WRITE Timing Trp 2 Trcd 2 Tcl 2 DW 16 bit ...
Страница 670: ...ELECTRICAL DATA S3C2416X RISC MICROPROCESSOR 26 32 NOTES ...
Страница 672: ...MECHANICAL DATA S3C2416X RISC MICROPROCESSOR 30 2 Figure 27 2 330 FBGA 1414 Package Dimension 2 Bottom View ...