Maxim Computer Drive DS1863 User Manual

Keywords: DS1863  
May 25, 2007  
APPLICATION NOTE 4052  
Quick Reference Guide to the DS1863 Memory Map  
Abstract: The DS1863 burst-mode PON controller with integrated monitoring capabilities has programming options to  
configure the alarms, warnings, lookup tables, and other functions. This programmability necessitates a large register  
memory map. This application note provides an outline of the register map, which is convenient when programming  
the device.  
Memory Map of the DS1863  
The DS1863 features six separate memory tables that are internally organized into eight byte rows (Figure 1).  
1. The Lower Memory is addressed from 00h to 7Fh. It contains alarm and warning thresholds, flags, masks,  
several control registers, password entry area (PWE), and the Table Select byte.  
2. Table 01h primarily contains user EEPROM (with PW1 level access) and some alarm and warning status bytes.  
3. Table 02h is a multifunction space that contains configuration registers, scaling and offset values, passwords,  
interrupt registers, and miscellaneous control bytes.  
4. Table 03h is strictly user EEPROM that is protected by a PW2-level password.  
5. Table 04h contains a temperature-indexed lookup table (LUT) for controlling the modulation voltage. The  
modulation LUT can be programmed in 2°C increments over the -40°C to +102°C range. Access to this register  
is protected by a PW2-level password.  
6. Table 05h contains another LUT, which allows the APC set point to change as a function of temperature to  
compensate for Tracking Error (TE). This TE LUT has 36 entries that determine the APC setting in 4°C windows  
between -40°C to +100°C. Access to this register is protected by a PW2-level password.  
Page 1 of 6  
 
Lower Memory  
Register Name  
Bit7  
Bit0  
6
5
4
3
2
1
-7  
1
-7  
1
-7  
1
-7  
9
1
9
1
9
1
9
1
9
1
9
1
9
1
9
1
9
1
9
1
9
1
9
1
9
1
9
1
9
1
9
1
0
00h  
01h  
02h  
03h  
04h  
05h  
06h  
07h  
08h  
09h  
0Ah  
0Bh  
0Ch  
0Dh  
0Eh  
0Fh  
10h  
11h  
12h  
13h  
14h  
15h  
16h  
17h  
18h  
19h  
1Ah  
1Bh  
1Ch  
1Dh  
1Eh  
1Fh  
20h  
21h  
22h  
23h  
24h  
25h  
26h  
27h  
S
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
TEMP ALARM HI  
TEMP ALARM LO  
TEMP WARN HI  
TEMP WARN LO  
-1  
-2  
6
-3  
5
-4  
4
-5  
3
-6  
2
-8  
2
2
0
S
2
-1  
-2  
6
-3  
5
-4  
4
-5  
3
-6  
2
-8  
2
2
0
S
2
-1  
-2  
6
-3  
5
-4  
4
-5  
3
-6  
2
-8  
2
2
0
S
2
-1  
-2  
14  
6
-3  
13  
5
-4  
12  
4
-5  
11  
3
-6  
10  
2
-8  
2
2
15  
8
2
2
V
V
V
V
ALARM HI  
ALARM LO  
WARN HI  
WARN LO  
CC  
CC  
CC  
CC  
7
0
2
2
15  
14  
6
13  
5
12  
4
11  
3
10  
2
8
2
2
7
0
2
2
15  
14  
6
13  
5
12  
4
11  
3
10  
2
8
2
2
7
0
2
2
15  
14  
6
13  
5
12  
4
11  
3
10  
2
8
2
2
7
0
2
2
15  
14  
6
13  
5
12  
4
11  
3
10  
2
8
2
2
MON1 ALARM HI  
MON1 ALARM LO  
MON1 WARN HI  
MON1 WARN LO  
MON2 ALARM HI  
MON2 ALARM LO  
MON2 WARN HI  
MON2 WARN LO  
MON3 ALARM HI  
MON3 ALARM LO  
MON3 WARN HI  
7
0
2
2
15  
14  
6
13  
5
12  
4
11  
3
10  
2
8
2
2
7
0
2
2
15  
14  
6
13  
5
12  
4
11  
3
10  
2
8
2
2
7
0
2
2
15  
14  
6
13  
5
12  
4
11  
3
10  
2
8
2
2
7
0
2
2
15  
14  
6
13  
5
12  
4
11  
3
10  
2
8
2
2
7
0
2
2
15  
14  
6
13  
5
12  
4
11  
3
10  
2
8
2
2
7
0
2
2
15  
14  
6
13  
5
12  
4
11  
3
10  
2
8
2
2
7
0
2
2
15  
14  
6
13  
5
12  
4
11  
3
10  
2
8
2
2
7
0
2
2
15  
14  
6
13  
5
12  
4
11  
3
10  
2
8
2
2
7
0
2
2
15  
14  
6
13  
5
12  
4
11  
3
10  
2
8
2
2
7
0
2
2
15  
14  
6
13  
5
12  
4
11  
3
10  
2
8
2
2
7
0
2
2
15  
14  
6
13  
5
12  
4
11  
3
10  
2
8
2
2
MON3 WARN LO  
7
0
2
2
SHADOWED EEPROM  
28h-2Fh SEE  
SEE  
SEE  
SEE  
SEE  
SEE  
SEE  
SEE  
Page 3 of 6  
 
PW2 EE  
30h-5Fh EE  
EE  
EE  
EE  
EE  
EE  
EE  
EE  
6
5
4
3
2
1
0
60h  
61h  
62h  
63h  
64h  
65h  
66h  
67h  
68h  
69h  
S
2
2
2
2
2
2
2
TEMP VALUE  
-1  
-2  
-3  
-4  
-5  
-6  
-7  
-8  
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
15  
7
14  
6
13  
5
12  
4
11  
3
10  
2
9
1
9
1
9
1
9
1
8
0
8
0
8
0
8
0
V
VALUE  
CC  
15  
7
14  
6
13  
5
12  
4
11  
3
10  
2
MON1 VALUE  
MON2 VALUE  
MON3 VALUE  
15  
7
14  
6
13  
5
12  
4
11  
3
10  
2
15  
7
14  
6
13  
5
12  
4
11  
3
10  
2
FETG  
STATUS  
SOFT  
FETG  
TX-F  
RESET  
SOFT  
TX-D  
TX-F  
STATUS  
STATUS  
UPDATE  
6Eh  
RSVD  
RSVD  
RSVD  
RDYB  
RSVD  
V
RDY  
6Fh  
70h  
71h  
72h  
73h  
74h  
75h  
TEMP RDY  
MON1 RDY MON2 RDY MON3 RDY RSVD  
HI LO  
CC  
ALARM  
V
V
CC  
TEMP HI TEMP LO  
MON1 HI MON1 LO MON2 HI MON2 LO  
3
CC  
ALARM  
MON3 HI MON3 LO RSVD  
RSVD  
RSVD  
RSVD  
RSVD  
RSVD  
RSVD  
TX-P HI TX-P LO  
RSVD RSVD  
MON1 HI MON1 LO MON2 HI MON2 LO  
RSVD  
2
ALARM  
RSVD  
RSVD  
RSVD  
RSVD  
RSVD  
RSVD  
BIAS HI  
RSVD  
1
ALARM  
BIAS MAX RSVD  
0
WARN  
V
HI  
V
LO  
CC  
TEMP HI TEMP LO  
MON3 HI MON3 LO RSVD  
3
CC  
WARN  
RSVD  
RSVD  
RSVD  
RSVD  
RSVD  
2
31  
23  
15  
7
30  
22  
14  
6
29  
21  
13  
5
28  
27  
26  
25  
24  
7Bh  
7Ch  
7Dh  
7Eh  
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
20  
19  
18  
17  
16  
2
2
2
2
2
PASSWORD ENTRY  
(PWE)  
12  
11  
10  
9
8
2
2
2
2
2
4
3
2
1
0
2
2
2
2
2
TABLE SELECT (TBL  
SEL)  
7
6
5
4
3
2
1
0
7Fh  
2
2
2
2
2
2
2
2
Table 01h  
Bit7  
Bit0  
PW1 EEPROM 80h-F7h EE  
EE  
EE  
V
EE  
HI V LO  
MON1 HI MON1 LO MON2 HI MON2 LO  
EE  
EE  
EE  
EE  
ALARM  
ALARM  
ALARM  
ALARM  
WARN  
F8h  
F9h  
FAh  
FBh  
FCh  
FDh  
TEMP HI TEMP LO  
3
2
1
0
CC  
CC  
MON3 HI MON3 LO RSVD RSVD RSVD  
RSVD  
RSVD  
TX-P HI TX-P LO  
RSVD RSVD  
MON1 HI MON1 LO MON2 HI MON2 LO  
MON3 HI MON3 LO RSVD RSVD RSVD RSVD RSVD RSVD  
RSVD  
RSVD  
RSVD  
RSVD  
RSVD  
RSVD RSVD BIAS HI  
RSVD  
RSVD RSVD BIAS MAX RSVD  
HI V LO  
V
TEMP HI TEMP LO  
3
CC  
CC  
WARN  
2
Page 4 of 6  
 
Table 02h  
Bit7  
Bit0  
MODE  
80h  
81h  
82h  
83h  
84h  
85h  
86h  
87h  
86h  
89h  
8Ah  
SEEB  
RSVD  
RSVD  
RSVD  
AEN  
MOD-EN APC-EN BIAS-EN  
7
6
5
4
3
2
2
2
9
2
1
1
1
8
1
0
0
0
7
0
T INDEX  
MOD DAC  
APC DAC  
2
2
2
2
2
2
2
2
2
2
0
2
2
2
2
2
1
2
2
2
2
2
1
7
6
5
4
3
2
2
2
2
2
7
6
5
4
3
2
2
2
2
2
12  
11  
10  
0
0
2
2
2
BIAS DAC  
7
6
5
4
3
2
2
2
2
2
DEVICE ID  
0
1
1
0
0
DEVICE VER  
UPDATE RATE  
CONFIG  
DEVICE VERSION  
0
0
0
0
SR(3:0) SR(3:0) SR(3:0) SR(3:0)  
FETG DIR TX-F EN  
RSVD  
ASEL  
RSVD  
RSVD  
RSVD  
RSVD  
12  
11  
10  
9
8
7
6
5
START-UP STEP  
2
2
2
2
2
2
2
2
MOD  
MOD  
MOD  
MOD RANGING  
8Bh  
RSVD  
RSVD  
RSVD  
RSVD  
RSVD  
2
1
0
7
6
5
4
3
2
1
DEVICE ADDRESS 8Ch  
COMP RANGING 8Dh  
X
2
2
2
2
2
2
2
APC  
APC  
APC  
RSVD  
RSVD  
RSVD  
RSVD  
RSVD  
RSVD  
RSVD  
RSVD  
RSVD  
2
1
0
RIGHT SHIFT  
8Eh  
8Fh  
MON1_2  
MON3_2  
MON1_1  
MON3_1  
MON1_0  
MON3_0  
MON2_2 MON2_1 MON2_0  
1
0
RIGHT SHIFT  
RSVD  
RSVD  
RSVD  
92, 94,  
96, 98,  
9Ah  
15  
14  
13  
12  
11  
10  
9
8
2
2
2
2
2
2
2
2
V
SCALE  
CC  
MON1-4 SCALE  
93, 95,  
97, 99,  
9Bh  
7
6
5
4
3
2
1
0
2
2
2
2
2
2
2
2
A2, A4,  
A6, A8,  
AAh  
15  
14  
13  
12  
11  
10  
S
S
2
2
2
2
2
2
V
OFFSET  
CC  
MON1-4 OFFSET A3, A5,  
9
8
7
6
5
4
3
2
A7, A9,  
ABh  
2
2
2
2
2
2
2
2
8
7
6
5
4
3
2
AEh  
TEMP OFFSET  
AFh  
S
2
2
2
2
2
2
2
1
0
-1  
-2  
-3  
-4  
-5  
-6  
2
2
2
2
2
2
2
2
31  
30  
29  
28  
27  
26  
25  
24  
B0h, B4h  
2
2
2
2
2
2
2
2
23  
22  
21  
20  
19  
18  
17  
16  
B1h, B5h  
PW1, PW2  
2
2
2
2
2
2
2
2
15  
14  
13  
12  
11  
10  
9
8
B2h, B6h  
2
2
2
2
2
2
2
2
7
6
5
4
3
2
1
0
B3h, B7h  
2
2
2
2
2
2
2
2
FETG ENABLE  
FETG ENABLE  
TX-F ENABLE  
V
EN  
CC  
B8h  
B9h  
BAh  
BBh  
TEMP EN  
MON1 EN MON2 EN  
MON3 EN RSVD  
RSVD  
RSVD  
RSVD  
RSVD  
RSVD  
1
TX-P HI EN TX-P LO EN BIAS HI EN BIAS MAX EN RSVD  
RSVD  
RSVD  
0
V
EN  
CC  
TEMP EN  
MON1 EN MON2 EN  
MON3 EN RSVD  
RSVD  
1
TX-F ENABLE  
TX-P HI EN TX-P LO EN BIAS HI EN BIAS MAX EN RSVD  
RSVD  
FETG EN  
0
7
6
5
4
4
4
9
3
3
3
8
2
1
0
HTXP  
BCh  
BDh  
BEh  
BFh  
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
7
6
5
2
1
0
LTXP  
2
2
2
7
6
5
2
1
0
HBIAS  
MAX IBIAS  
2
2
2
12  
11  
10  
7
6
5
2
2
2
Page 5 of 6  
 
12  
5
11  
4
10  
3
9
2
8
1
7
0
F8h  
F9h  
FAh  
RSVD  
RSVD  
2
2
2
2
2
2
2
2
2
2
2
2
MAN IBIAS  
MAN_CNTL  
7
6
2
2
RSVD  
RSVD  
RSVD  
RSVD  
RSVD  
RSVD  
RSVD  
MAN_CLK  
Application Note 4052: http://www.maxim-ic.com/an4052  
More Information  
For technical questions and support: http://www.maxim-ic.com/support  
Other questions and comments: http://www.maxim-ic.com/contact  
Related Parts  
DS1863:  
AN4052, AN 4052, APP4052, Appnote4052, Appnote 4052  
Copyright © by Maxim Integrated Products  
Additional legal notices: http://www.maxim-ic.com/legal  
Page 6 of 6  
 

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