PCT2303N DATA SHEET
CONTROL REGISTERS
!!
Line-Side Configuration 2
(Register 5Eh, R/W)
Reserved
PDC
Reserved
CLE
FDT
LCS[3:0]
Reserved
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Reset settings = 0000h
NOTE: The line side must be activated through the PR bits before valid read/write.
Shaded bit descriptions are for international line-side support only.
Bit Definitions:
Bits
15:11
Name
Reserved
PDC
Description
Reserved. Read returns zero.
10
7
Charge pump disable. This bit disables the internal charge pump when set.
CLE
Com link error. 1 = A communication problem exists between the PCT303A and
the PCT303L. When this bit goes high, it remains high until a logic 0 is written to
it.
6
FDT
Frame detect.
1 = Isolation Cap frame lock has been established.
0 = Isolation Cap communication has not established frame lock.
5:2
LCS[3:0]
Loop current sense. Four-bit value returning the loop current in 6 mA increments.
LCS[3:0]
0
Description
Loop current < 6 mA.
Loop current >120 mA.
1111
Vendor ID
(Register 7Ch, R/W)
F[7:0]
11
S[7:0]
15
14
13
13
12
12
10
10
9
9
8
8
7
7
6
6
5
5
4
3
3
2
1
0
Vendor ID
(Register 7Eh, R/W)
T[7:0]
11
REV[7:0]
15
14
4
2
1
0
Reset settings = N/A
These registers are for specific vendor identification. The ID method is Microsoft’s Plug and Play Vendor ID code
with F7..0 being the first character of that ID, S7..0 being the second character, and T7..0 the third character. These
three characters are ASCII encoded.
PC-TEL, Inc.
25
2303N0DOCDAT10A-0899
ETC [ ETC ]
