参数资料
型号: PM7351-BI
厂商: PMC-SIERRA INC
元件分类: 数字传输电路
英文描述: OCTAL SERIAL LINK MULTIPLEXER
中文描述: ATM/SONET/SDH SUPPORT CIRCUIT, PBGA304
封装: 31 X 31 MM, 1.51 MM HEIGHT, 1.27 MM PITCH, SBGA-304
文件页数: 73/174页
文件大小: 1790K
代理商: PM7351-BI
RELEASED
PM7351 S/UNI-VORTEX
DATA SHEET
PMC-1980582
ISSUE 5
OCTAL SERIAL LINK MULTIPLEXER
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
63
Register 0x005: Control Channel Base Address
Bit
Type
Function
Default
Bit 7
R/W
CCBA[10]
0
Bit 6
R/W
CCBA[9]
0
Bit 5
R/W
CCBA[8]
0
Bit 4
R/W
CCBA[7]
0
Bit 3
R/W
CCBA[6]
0
Bit 2
R/W
CCBA[5]
0
Bit 1
R/W
CCBA[4]
0
Bit 0
R/W
CCBA[3]
0
CCBA[10:3]
This register in conjunction with the CCBA[11] bit of the Control Channel
Base Address MSB register determines the location of the control channels
for the S/UNI-VORTEX within the available address space for the purposes of
polling and transfer selection. This register is only relevant to the
downstream direction; no address remapping is done in the upstream.
The value of CCBA[11:3]*8 is subtracted from the TADR[11:0] input value
sampled. If the difference is less than 8, TPA will drive the buffer availability
status (provided the TPAEN register bit is logic 1) of the control channel
whose link index (the ‘n’ in TXDn+/- and RXDn+/-) matches the difference.
The value of CCBA[11:3]*8 is subtracted from the ADDR[11:0] value encoded
in the cell structures (see Fig. 3) received on TDAT[15:0]. If the difference is
less than 8, the cell shall be written to the control channel buffer whose link
index matches the difference.
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