參數(shù)資料
型號: PM7351-BI
廠商: PMC-SIERRA INC
元件分類: 數(shù)字傳輸電路
英文描述: OCTAL SERIAL LINK MULTIPLEXER
中文描述: ATM/SONET/SDH SUPPORT CIRCUIT, PBGA304
封裝: 31 X 31 MM, 1.51 MM HEIGHT, 1.27 MM PITCH, SBGA-304
文件頁數(shù): 28/174頁
文件大?。?/td> 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
18
Ball
Name
Type
Ball
No.
Function
RSOP
Output
B18
The Receive Start of Packet (RSOP) marks either the
first or second word of the cell on the RDAT[15:0] bus.
When RSOP is high and RANYPHY is low, the first
word of the cell structure is present on the RDAT[15:0]
stream. When RSOP and RANYPHY are both high,
the second word of the cell structure is present on the
RDAT[15:0] stream.
RSOP is updated on the rising edge of RCLK and
considered valid only when the S/UNI-VORTEX
device was selected after the polling process and the
RENB signal is sampled low. If RANYPHY is logic low
RSOP is driven immediately upon sampling RENB
low, but it has an additional cycle latency when
RANYPHY is logic high. RSOP becomes high
impedance upon sampling RENB high or if the S/UNI-
VORTEX device is not selected for transfer.
When RANYPHY is high, autonomous deselection
occurs after the last word of a cell resulting in setting
RSOP high-impedance until reselection.
RSX
Output
C17
The Receive Start of Transfer (RSX) is only active
when the RANYPHY input is logic high. When
RANYPHY is logic low, RSX is low during cell
transfers or high-impedance otherwise.
RSX marks the start of the cell on the RDAT[15:0]
bus. When RSX is high, the first word of the cell
structure is present on the RDAT[15:0] stream.
RSX is updated on the rising edge of RCLK and
considered valid only when the RENB signal was
sampled low in the previous cycle and the S/UNI-
VORTEX device was selected after the polling
process. RSX becomes high impedance (with a cycle
latency) upon sampling RENB high or if the S/UNI-
VORTEX device is not selected for transfer.
When RANYPHY is high, autonomous deselection
occurs after the last word of a cell resulting in setting
RSX high-impedance until reselection.
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