MK50H25N ST Microelectronics, Inc., MK50H25N Datasheet - Page 20

• Manufacturer Part Number: MK50H25N
• Description: High Speed Link Level Controller
• Manufacturer: ST Microelectronics, Inc.

MK50H25
20/62
PPARM
0
1
2
3
PPRIM
05:04
03:00
Remotely
Initiated
SABM Timeout
FRMR Sent the
DISC or DM
Rcvd.
T3 Timeout
Disconnect
Indication
PPARM
PPRIM
2
3
4
5
6
7
8
9
10
UA or DM F=1
Received
DISC Timeout
T3 Timeout
Confirmation
Disconnect
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.
PROVIDER PARAMETER provides additional information about the
reason for the receipt of certain primitives. The following table shows
the parameters for the applicable provider primitives. This field is unde-
fined for other provider primitives.
PROVIDER PRIMITIVE is written by the MK50H25, in conjunction with
with setting the PAV bit, to inform the user of link control conditions.
Valid Provider Primitives are as follows:
Init Confirmation: Indicates MK50H25 Init Block reading has completed.
Watchdog Timer Expiry Indication: Indicates expiration of TCLK or RCLK
watchdog timer as determined by the value of PPARM. (PPARM=1indi-
cates TCLK, PPARM=2 indicates RCLK If PLOST is set it indicates
both RCLK and TCLK watchdog timer expiry). Issued only if enabled.
Error Indication: Indicates an Error condition has occurred during the
Information Transfer phase that requires instruction by the Host for re-
covery. See the PPARM table for specific error conditions. Appropriate
Host responses are Connect Response or Disconnect Request.
Remote Busy Indication: Indicates change in the Remote Busy status of
the MK50H25. See PPARM table for specific conditions. This primitive
is only generated if RBSY (bit 11 of IADR+16) is set = 1.
Connect Indication: Indicates attempt by the Primary station to establish
a logical link (SABM received). Appropriate user responses are Con-
nect Response or Disconnect Request.
Connect Confirmation: Indicates sucess of a previous Connect Request
by the user. A logical link is now established.
Reset Indication: If a logical link has been established, it indicates an
attempt by the Primary station to reset the current logical link (SABM
received). Appropriate user responses are Reset Response or Discon-
nect Request. In Transparent Mode or Disconnected Phase, it indi-
cates expiry of timer T1.
Reset Confirmation: Indicates sucess of a previous Reset Request by
the user. The current logical link has now been reset.
XID Indication: Indicates the receipt of an XID command. The data field
Remotely
Initiated
FRMR Sent
then SABM/E
Received
Indication
Reset
Unsolicited
DM/F=0 Rcvd
Timer
Recovery
Timeout
FRMR
Received
Unsolicited Ua
or F bit
Received
Indication
Error
Remote Busy
RNR Received
Remote Un-
Busy RR or
REJ Rcvd.
Remote Busy
Indication