參數(shù)資料
型號(hào): 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): 45/82頁
文件大?。?/td> 1056K
代理商: MC92600
Chapter 5. Test Modes
5-3
Loop Back BIST Sequence System Test Mode
The BIST sequence makes use of the 8B10B encoder/decoder. Therefore, this test mode
overrides the setting on TBIE signal and forces byte interface mode. Additionally, the BIST
sequence requires that a normal byte alignment mode be used. The settings on BSYNC_0
and BSYNC_1 are overridden, forcing the device into the byte aligned with realignment
mode. In addition to the above signals, the generation of disparity-based word
synchronization events is blocked. The WSE_GEN signal is ignored when this test mode is
enabled.
BIST is run at the speed indicated by the frequency of the reference clock and by the speed
range selected by half-speed mode (HSE). The settings of DDRE, WSE and RCCE are not
altered and BIST will follow their setting
5.3 Loop Back BIST Sequence System Test Mode
This test mode is the combination of the loop back and BIST sequence system test modes.
The device operates as described in Section 5.1, òLoop Back System Testó and Section 5.2,
òBIST Sequence System Test Mode.ó However, the need to go through the start-up
sequence is eliminated because the transmitter automatically goes through the proper
sequence.
5.4 Functional Production Test
Functional production test mode is used for factory testing purposes only. It enables special
access for logic test patterns. There are no in-system applications for this mode.
5.5 BIST Production Test
BIST production test mode is used for factory testing purposes only. It enables loop back
BIST testing through an analog loop back path. There are no in-system applications for this
mode.
Table 5-2. BIST Error Codes
RECV_n_ERR
RECV_n_K
RECV_n_IDLE
Description
Low
Low
Low
BIST running, no PN mismatch this character.
High
Low
Low
BIST running, PN mismatch error this character.
High
Low
High
Receiver byte/word synchronized, PN analyzer is not locked.
High
High
Low
Not byte syncThe receiver is in start-up or has lost byte
alignment and is searching for alignment.
High
High
High
Not word syncThe receiver is byte synchronized but has not
achieved or has lost word alignment and is searching for
alignment.
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