参数资料
型号: RPIXP2850BB
厂商: INTEL CORP
元件分类: 微控制器/微处理器
英文描述: 32-BIT, 1400 MHz, RISC PROCESSOR, PBGA1356
封装: 37.50 X 37.50 MM, 1 MM PITCH, FCBGA-1356
文件页数: 68/130页
文件大小: 1782K
代理商: RPIXP2850BB
Intel IXP2800 and IXP2850 Network Processors
Signal Description
42
Datasheet
Table 16. Configuration Pins
Pin
Configuration Function
Description
CLK_CFG_RST_DIR
CFG_RST_DIR
Determines direction of PCI_RST# signal:
1—Network processor is the host supporting
central functions. PCI_RST# is an output.
NRESET is used as reset input.
0—External PCI host supporting central
functions. PCI_RST# is an input.
GPIO[0]
CFG_PROM_BOOT
Indicates if Boot ROM is present:
0—No Boot ROM; host must download Boot
image into DRAM
1—Boot ROM is present
GPIO[1]
CFG_PCI_BOOT_HOST
Indicates if the Host or Intel XScale core will
configure PCI devices:
0—External Host
1—IXP2800
GPIO[2]
CFG_PCI_ARB
PCI Arbiter Used:
0—IXP2800/IXP2850 is not the arbiter
1—IXP2800/IXP2850 is the arbiter
GPIO[4:3]
CFG_PCI_DWIN[1:0]
Select DRAM BAR Window Size:
11—1024 Mbyte
10—512 Mbyte
01—256 Mbyte
00—128 Mbyte
GPIO[6:5]
CFG_PCI_SWIN[1:0]
Select SRAM BAR Window Size:
11—256 Mbyte
10—128 Mbyte
01—64 Mbyte
00—32 Mbyte
SP_AD[5:0]
CFG_PLL_MULT[5:0]
Select PLL Multiplier:
0x10—16
0x12—18
...
0x30—48
Note: Only even multipliers between 0x16 - 0x48 are
supported.
SP_AD[6]
CFG_MSF_FREQ_SEL
Select source of MSF Tx Clock:
0—TCLK_Ref input pin
1—Internally generated clock
SP_AD[7]
RESET_OUT_STRAP
1—nRESET_OUT is removed after PLL locks.
0—nRESET_OUT is removed by software using
bit IXP_RESET0[17].
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