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參數(shù)資料
| 型號： | MK50H27Q25 |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 1 CHANNEL(S), 51M bps, SERIAL COMM CONTROLLER, PQCC52 |
| 封裝： | PLASTIC, LCC-52 |
| 文件頁數(shù)： | 11/58頁 |
| 文件大?。?/td> | 621K |
| 代理商： | MK50H27Q25 |
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sion of SIOS can be resumed by issuing UPRIM 16 described above.
Valid only in Out Of Service phase when JSS7E=1 (CSR2).
07
PLOST
PROVIDER PRIMITIVE LOST is set by MK50H27 when a provider
primitive cannot be issued because the PAV bit is still set from the pre-
vious provider primitive. PLOST is cleared when PAV is cleared and
by a Bus RESET. Writing to this bit has no affect.
06
PAV
PROVIDER PRIMITIVE AVAILABLE is set by the MK50H27 when a
new provider primitive has been placed in PPRIM.
PPRIM is
READ/CLEAR ONLY and is set by the chip and cleared by writing a "1"
to the bit or by Bus RESET. Under normal operation the host should
clear the PAV bit after PPRIM is read.
05:00
PPRIM
PROVIDER PRIMITIVE is written by the MK50H27, in conjunction
with setting the PAV bit, to inform the user of link control
condi-
tions.
Valid Provider Primitives are as follows:
0
Init Confirmation: indicates that the initialization has completed.
1
In Service: indicates that alignment has completed successfully.
2
In Service Yellow: indicates alignment completed succesfully with CCITT
Yellow Book definitions for SINs & SIEs (SF = 9 & 10 respectively).
This primitive will occur only if enabled by RYEL=1 in Protocol Options.
3
Transmit Clock Watchdog Timer Expired: indicates that the watchdog
timer for TCLK has expired due to no transition on TCLK for more than
the number of SYSCLK cycles as selected by CSR4<15:14>.
4
Receive Clock Watchdog Timer Expired: indicates that the watchdog
timer for RCLK has expired due to no transition on RCLK for more than
the number of SYSCLK cycles as selected by CSR4<13:12>.
5
Received SU Timer timeout: indicates that no signal units have been
received within the previous 32xTP time (where TP is the poll timer).
This primitive is only issued if RSUTE=1 (CSR2<12>).
8
Alignment Out of Service: indicates that a transfer to Out of Service
phase has occured, due to an alignment failure.
Alignment will fail if
AERM is exceeded, timer T2 times out, or timer T3 times out.
9
LSSU Out of Service: indicates that a transfer to the Out of Service
phase has occured, due to a received LSSU.
10
T1 Out of Service: indicates that a transfer to the Out of Service
phase has occured, due to a timer T1 time out.
11
Transmit Out of Service: indicates that a transfer to the Out of
Service phase has occured, due to a transmit link failure. The trans-
mit link will fail if timers T6 or T7 time out.
‘
12
Receive Out of Service: indicates that a transfer to the Out of Service
phase has occured due to receive link failure. A receive link failure will
occur when more than 2 out of 3 signal units have a FIB or BSN error.
13
SUERM Out of Service: indicates that a transfer to the Out of Service
phase has occured, due to SUERM being exceeded.
16
Remote Processor Outage: indicates that a SIPO has been received
indicating that a remote processor outage condition has occured.
17
Remote Processor Outage Recovered: an FISU or an MSU has been
received since remote processor outage condition has been reported.
18
Received message BSNT: indicates that the MK50H27 has written the
BSNT to the Status Buffer as requested by UPRIM 12.
19
Retrieval complete: retrieval request and FSNC completed successfully.
The pointer to the retransmission buffer is available in STATUS buffer.
20
Remote Processor Busy: an SIB has been received indicating that
the remote node has entered into congestion.
21
Remote Processor Busy Recovered: the remote node has acknowledged
MK50H27
19/56
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