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: 48/130页
文件大小: 1782K
代理商: RPIXP2850BB
Intel IXP2800 and IXP2850 Network Processors
Signal Description
24
Datasheet
3.2.2
SRAM
There are four SRAM interfaces to Quad Data Rate (QDR) SRAMs, and each interface has the
signals found in Table 6. The SRAMs use HSTL signaling levels.
Table 6.
SRAM Signals (Sheet 1 of 7)
Signal Name
I/O
Description
Number
QDR0_K_H(0)
QDR0_K_H(1)
QDR1_K_H(0)
QDR1_K_H(1)
QDR2_K_H(0)
QDR2_K_H(1)
QDR3_K_H(0)
QDR3_K_H(1)
O
Positive and negative output clocks. Address, Port Enable, Data
Out are referenced to these clocks.
8
QDR0_K_L(0)
QDR0_K_L(1)
QDR1_K_L(0)
QDR1_K_L(1)
QDR2_K_L(0)
QDR2_K_L(1)
QDR3_K_L(0)
QDR3_K_L(1)
O
8
QDR0_C_H(0)
QDR0_C_H(1)
QDR1_C_H(0)
QDR1_C_H(1)
QDR2_C_H(0)
QDR2_C_H(1)
QDR3_C_H(0)
QDR3_C_H(1)
O
Positive input clocks. Data In is referenced to these clocks.
8
QDR0_C_L(0)
QDR0_C_L(1)
QDR1_C_L(0)
QDR1_C_L(1)
QDR2_C_L(0)
QDR2_C_L(1)
QDR3_C_L(0)
QDR3_C_L(1)
O
Negative input clocks. Data In is referenced to these clocks.
8
QDR0_CIN_H(0)
QDR0_CIN_H(1)
QDR1_CIN_H(0)
QDR1_CIN_H(1)
QDR2_CIN_H(0)
QDR2_CIN_H(1)
QDR3_CIN_H(0)
QDR3_CIN_H(1)
I
Positive clock inputs. These differential clocks are used as a
reference for Data In. They are the feedback of Sn_C and
Sn_C_L.
Note: QDRn_CIN_L(1) and QDRn_CIN_H(1) input pad outputs
are not connected/used internally. The QDRn_CIN_L(1) and
QDRn_CIN_H(1) input pins/pads are provided in the device and
can be used for termination.
8
QDR0_CIN_L(0)
QDR0_CIN_L(1)
QDR1_CIN_L(0)
QDR1_CIN_L(1)
QDR2_CIN_L(0)
QDR2_CIN_L(1)
QDR3_CIN_L(0)
QDR3_CIN_L(1)
I
8
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