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PM7350-PGI 参数 Datasheet PDF下载

PM7350-PGI图片预览
型号: PM7350-PGI
PDF下载: 下载PDF文件 查看货源
内容描述: [Support Circuit, 1-Func, CMOS, PBGA160, 15 X 15 MM, 1.81 MM HEIGHT, PLASTIC, BGA-160]
分类和应用: ATM异步传输模式电信电信集成电路
文件页数/大小: 245 页 / 898 K
品牌: PMC [ PMC-SIERRA, INC ]
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RELEASED  
PM7350 S/UNI DUPLEX  
DATA SHEET  
PMC-1980581  
ISSUE 8  
DUAL SERIAL LINK PHY MULTIPLEXER  
Register 0x22: Microprocessor Extract FIFO Control  
Bit  
Type  
Function  
Default  
Bit 7  
Bit 6  
Bit 5  
Bit 4  
Bit 3  
Bit 2  
Bit 1  
Bit 0  
Unused  
Unused  
X
X
0
R/W  
R/W  
W
EXTCRCCHK  
EXTCRCPR  
EXTABRT  
Unused  
1
X
X
X
0
Unused  
R/W  
EXTFSEL  
EXTFSEL:  
The EXTFSEL bit is used to select the one of Microprocessor Extract FIFOs  
for a cell read operation. A logic 0 in EXTFSEL selects the Extract FIFO  
associated with RXD1+/-. A logic 1 in EXTFSEL selects the Extract FIFO  
associated with RXD2+/-. The Extract FIFO has to be selected prior to  
starting the cell transfer. Due to synchronization delays, a read of the  
Microprocessor Cell Buffer Data register should not be initiated until two  
REFCLK periods after completion of the write of these bits.  
EXTABRT:  
The EXTABRT bit allows the microprocessor to discard a cell without reading  
the remaining contents. If EXTABRT is set to a logic 1 when previously logic  
0, the extract pointer is reset, effectively discarding the remaining content of  
the cell. Setting EXTABRT after the last read (i.e. at the beginning of the next  
cell) has no effect. To abort a cell, the microprocessor must have read at  
least the first word of the cell but no more than 56 bytes.  
Due to synchronization delays, no cell extraction operation should be initiated  
until two REFCLK periods after completion of the write of this bit.  
EXTABRT is not readable.  
It is cleared on every read from normal mode Microprocessor Cell Data  
register.  
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE  
124  
 
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