參數(shù)資料
型號: MC92600
廠商: Motorola, Inc.
英文描述: High-speed, Full-duplex, Serial Data Interface(高速全雙工串行數(shù)據(jù)接口)
中文描述: 高速,全雙工,串行數(shù)據(jù)接口(高速全雙工串行數(shù)據(jù)接口)
文件頁數(shù): 34/82頁
文件大小: 1056K
代理商: MC92600
3-12
MC92600 WarpLink Quad Users Manual
Device Operations
original 10-bit boundaries if a byte alignment mode is enabled.
3.5.4 Receiver Interface Modes
The receiver interface facilitates transfer of received data to the system. It also provides
information on the status of the link. Table 3-1, "WarpLink Receiver Interface Signals,ó
describes each of the signals involved in receiver operation.
The receiver interface, through which received data is obtained, may be operated in byte
mode or in 10-bit interface mode. Several timing mode options exist for the receiver
interface. Each of the operating modes are described in the following sections.
Section 3.5.4.1, òByte Interface Modeó
Section 3.5.4.2, ò10-Bit Interface Modeó
Section 3.5.4.3, òDouble Data Rate Modeó
Section 3.5.4.4, òHalf-Speed Modeó
Section 3.5.4.5, òRepeater Modeó
3.5.4.1 Byte Interface Mode
The receiver interface may be operated in byte mode or in 10-bit interface (TBI) mode.
Received data is a byte (8 bits) of uncoded data when in byte mode. Byte interface mode is
enabled by setting the TBIE signal low.
NOTE:
Do not use non-aligned mode in byte mode. See Section 3.3.1,
òByte Alignmentó for more information on byte alignment
modes.
The internal 8B/10B decoder is used to decode data from the 10-bit character received. The
received byte is on the RECV_n_7 through RECV_n_0 signals.
The RECV_n_K is asserted when the byte represents a special 8B/10B code, otherwise it
is low, indicating that the byte is normal data.
The RECV_n_IDLE is asserted when the byte is the special 8B/10B idle (K28.5) code. This
can be used by system logic for synchronization or data parsing. RECV_n_IDLE is set low
when the byte is normal data or a non-idle special code. RECV_n_IDLE is asserted and
RECV_n_K is set low to indicate that an underrun/overrun error occurred. See Section 3.7,
òReceiver Interface Error Codesó for more information on error conditions.
The RECV_N_ERR is set low when the receiver is operating normally, and is asserted
when received data contains an error or the receiver is in an error state. The state of the
RECV_n_IDLE and RECV_n_K signals are decoded to determine the error condition.
Table 3.6, "Reference Clock Frequenciesó describes the error codes and their meaning.
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