参数资料
型号: ZL50418GKG2
厂商: ZARLINK SEMICONDUCTOR INC
元件分类: 网络接口
英文描述: DATACOM, LAN SWITCHING CIRCUIT, PBGA553
封装: 37.50 X 37.50 MM, 2.33 MM HEIGHT, LEAD FREE, MS-034, HSBGA-553
文件页数: 16/155页
文件大小: 1928K
代理商: ZL50418GKG2
ZL50418
Data Sheet
112
Zarlink Semiconductor Inc.
12.3.6.16
PRG – Port Reservation for Giga ports
I2C Address h0B9, CPU Address 50F
Accessed by CPU, serial interface and I2C (R/W)
12.3.6.17
SFCB – Share FCB Size
I2C Address h0BA), CPU Address 510
Accessed by CPU, serial interface and I2C (R/W)
Bits [7:4]:
Expressed in multiples of 4 packets. Threshold for dropping all best effort
frames when destination port best efforts queues reaches UCC threshold,
shared pool is all used and source port reservation is at or below the
PR100[7:4] level. Also the threshold for initiating UC flow control.
Default:
- h36 for 24+2 configuration with memory 2 MB/bank;
- h24 for 24+2 configuration with 1MB/bank;
74
3
0
Buffer low threshold
SP buffer reservation
Bit [3:0]:
Per source port buffer reservation.
Define the space in the FDB reserved for each Gigabit port. Expressed in
multiples of 16 packets. For each packet 1536 bytes are reserved in the
memory.
Bits [7:4]:
Expressed in multiples of 16 packets. Threshold for dropping all best effort
frames when destination port best effort queues reach UCC threshold,
shared pool is all used and source port reservation is at or below the
PRG[7:4] level. Also the threshold for initiating UC flow control.
Default:
- h58 for memory 2 MB/bank;
- h35 for 1 MB/bank;
70
Shared pool buffer size
Bits [7:0]:
Expressed in multiples of 4 packets. Buffer reservation for shared pool.
Default:
- h64 for 24+2 configuration with memory of 2 MB/bank;
- h14 for 24+2 configuration with memory of 1 MB/bank;
相关PDF资料
PDF描述
ZLW-2-B 1 MHz - 1000 MHz RF/MICROWAVE DOUBLE BALANCED MIXER, 9.5 dB CONVERSION LOSS-MAX
ZMG71W SINGLE COLOR LED, GREEN
ZMM5228/D1 3.9 V, 0.5 W, SILICON, UNIDIRECTIONAL VOLTAGE REGULATOR DIODE
ZMM5242/D1 12 V, 0.5 W, SILICON, UNIDIRECTIONAL VOLTAGE REGULATOR DIODE
ZMV934ATC VHF BAND, 12 V, SILICON, HYPERABRUPT VARIABLE CAPACITANCE DIODE
相关代理商/技术参数
参数描述
ZL51B 制造商:YEASHIN 制造商全称:YEASHIN 功能描述:500 mW DO-35 Hermetically Sealed Glass Zener Voltage Regulators
ZL56B 制造商:YEASHIN 制造商全称:YEASHIN 功能描述:500 mW DO-35 Hermetically Sealed Glass Zener Voltage Regulators
ZL5V1B 制造商:YEASHIN 制造商全称:YEASHIN 功能描述:500 mW DO-35 Hermetically Sealed Glass Zener Voltage Regulators
ZL5V6B 制造商:YEASHIN 制造商全称:YEASHIN 功能描述:500 mW DO-35 Hermetically Sealed Glass Zener Voltage Regulators
ZL60001 制造商:ZARLINK 制造商全称:Zarlink Semiconductor Inc 功能描述:High speed 2.5 Gbps 850 nm VCSEL