Datasheet

Internal Registers
14
SGLS139B − October 2003 − Revised April 2004TSB12LV32-EP
2.2.6 Isochronous Port Register at 18h
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 29 30 3128
TAG1 TAG2
MONTAG
IRPORT1 IRPORT2 ISYNCRCVN
IRCVALL
The power-up reset value of this register equals 0000 0000h.
BIT
NUMBER
BIT NAME FUNCTION DIR DESCRIPTION
0−1 TAG1 Tag field 1 R/W The TAG1 field can further qualify the isochronous reception for isochronous receive
PORT1 when the MONTAG bit is set.
2−7 IRPORT1 Isochronous
receive port 1
channel number
R/W IRPORT1 contains the channel number of the isochronous packets that the receiver
accepts. The receiver accepts isochronous packets with this channel number when
the IRP1EN bit is set.
8−9 TAG2 Tag field 2 R/W The TAG2 field can further qualify the isochronous reception for isochronous receive
PORT2 when the MONTAG bit is set.
10−15 IRPORT2 Isochronous
receive port 2
channel number
R/W IRPORT2 contains the channel number of the isochronous packets that the receiver
accepts. The receiver accepts isochronous packets with this channel number when
the IRP2EN bit is set.
16−23 RESERVED Reserved
24−27 ISYNCRCVN Synchronous
enable
R/W In isochronous receive mode to the DM port, when the ISYNCRCVN enable bits are
high, the DMPRE terminal pulses when an isochronous packet is received whose
SYNC bit field in its header matches the bit pattern in this field. The default is 0000b.
28 IRCVALL Receive all
isochronous
packets
R/W When the IRCVALL bit is set high, the TSB12LV32 receives all isochronous packets
regardless of the channel number or tag number. The default for this bit is 0.
29−30 RESERVED Reserved
31 MONTAG Match on tag R/W MONTAG is set when the user wants to accept only isochronous packets that match
both the tag field and the channel number field. When set, MONTAG indicates that
isochronous receive data is accepted. The default for this bit is 0.