TC1796
Peripheral Units (Vol. 2 of 2)
Micro Second Channel (MSC)
User’s Manual 21-39 V2.0, 2007-07
MSC, V2.0
21.2.2 Status and Control Registers
The Upstream Status Register DSR is used to configure the upstream channel data
format, baud rate, and parity type. It also provides the status information of the upstream
counter (UC).
USR
Upstream Status Register (10
H
) Reset Value: 0000 0000
H
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
0UC
rrh
1514131211109876543210
0
P
CTR
URR UFT
rrwrwrw
Field Bits Type Description
UFT 0rwUpstream Channel Frame Type
This bit determines the frame type used by the
upstream channel for data reception.
0
B
12-bit upstream frame selected
1
B
16-bit upstream frame selected (with 4-bit
address field)
URR [3:1] rw Upstream Channel Receiving Rate
This bit field determines the baud rate for the
upstream channel.
000
B
Upstream channel disabled; no reception is
possible
001
B
Baud rate = f
MSC
/4
010
B
Baud rate = f
MSC
/8
011
B
Baud rate = f
MSC
/16
100
B
Baud rate = f
MSC
/32
101
B
Baud rate = f
MSC
/64
110
B
Baud rate = f
MSC
/128
111
B
Baud rate = f
MSC
/256
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