DS1875 Quick Reference Guide

DS1875 Quick Reference Guide

Abstract: The DS1875 burst-mode PON controller with integrated monitoring allows programming to configure the alarms, warnings, lookup tables, and other functions. The programming necessitates a large register memory map. This application note provides a simplified view of the register map, which is convenient when programming the device.

Memory Map of the DS1875

The DS1875 burst-mode PON controller features 10 separate memory tables that are internally organized into 8-byte rows.

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.

Table 00h contains conversion results for MON5 through MON8.

Table 01h primarily contains user EEPROM (with PW1 level access), as well as some alarm and warning status bytes.

Table 02h is a multifunction space that contains configuration registers, scaling and offset values, passwords, interrupt registers, and other miscellaneous control bytes.

Table 03h is strictly user EEPROM that is protected by a PW2-level password.

Table 04h contains a temperature-indexed 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.

Table 05h contains a temperature-indexed LUT. It allows the APC set point to change as a function of temperature to compensate for TE (tracking error). The APC 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.

Table 06h contains a MON4-indexed LUT for controlling the M4DAC voltage. The MON4 LUT has 32 entries that are configurable to act as one 32-entry LUT of two 16-byte LUTs. When configured as one 32-byte LUT, each entry corresponds to an increment of 1/32 of the full scale. When configured as two 16-byte LUTs, the first 16 bytes and the last 16 bytes each correspond to 1/16 of full scale. Either of the two sections is selected with a separate configuration bit. Access to this register is protected by a PW2-level password.

Table 07h contains a temperature-indexed LUT for controlling the PWM reference voltage (integration of FB input). The PWM 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.

Table 08h contains a temperature-indexed LUT for controlling the BIAS current. The BIAS 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.

Auxiliary memory (Device A0h) contains 256 bytes of EE memory accessible from address 00h – FFh. It is selected with the device address of A0h.

DS1875 Memory Map

More detailed image (PDF, 8kB)
Figure 1. DS1845 memory map.

Register Reference

The following tables provide an easy reference to the Lower Memory and Tables 00h, 01h, and 02h. For a description of the functionality for each bit, please refer to the corresponding register in the data sheet. Tables 03h through 08h are LUTs that do not require a separate reference and, therefore, not included here. Please refer to the data sheet for detailed information about these tables.

Note: RSVD is used as an acronym for Reserved.

Lower Memory

Register Name	Register Addr	Bit7	Bit6	Bit5	Bit4	Bit3	Bit2	Bit1	Bit0
TEMP ALARM HI	00h, 04h	S	26	25	24	23	22	21	20
TEMP WARN HI	01h, 05h	2-1	2-2	2-3	2-4	2-5	2-6	2-7	2-8
TEMP ALARM LO	02h, 06h	S	26	25	24	23	22	21	20
TEMP WARN LO	03h, 07h	2-1	2-2	2-3	2-4	2-5	2-6	2-7	2-8
VCC ALARM HI	08, 0C, 10,14, 18, 1C, 20, 24,28, 2Ch	215	214	213	212	211	210	29	28
VCC WARN HI	08, 0C, 10,14, 18, 1C, 20, 24,28, 2Ch	215	214	213	212	211	210	29	28
MON1-4 ALARM HI	09, 0D, 11, 15, 19, 1D, 21, 25, 29, 2Dh	27	26	25	24	23	22	21	20
MON1-4 WARN HI	09, 0D, 11, 15, 19, 1D, 21, 25, 29, 2Dh	27	26	25	24	23	22	21	20
VCC ALARM LO	0A, 0E, 12, 16, 1A, 1E, 22, 26, 2A, 2Eh	215	214	213	212	211	210	29	28
VCC WARN LO	0A, 0E, 12, 16, 1A, 1E, 22, 26, 2A, 2Eh	215	214	213	212	211	210	29	28
MON1-4 ALARM LO	0B, 0F, 13, 17, 1B, 1F, 23, 27, 2B, 2Fh	27	26	25	24	23	22	21	20
MON1-4 WARN LO	0B, 0F, 13, 17, 1B, 1F, 23, 27, 2B, 2Fh	27	26	25	24	23	22	21	20
PW2 EE	30h-5Fh	EE	EE	EE	EE	EE	EE	EE	EE
TEMP VALUE	60h	S	26	25	24	23	22	21	20
TEMP VALUE	61h	2-1	2-2	2-3	2-4	2-5	2-6	2-7	2-8
VCC VALUE	62, 64, 66, 68, 6Ah	215	214	213	212	211	210	29	28
MON1-4 VALUE	63, 65, 67, 69, 6Bh	27	26	25	24	23	22	21	20
RESERVED	6C, 6Dh	0	0	0	0	0	0	0	0
STATUS	6Eh	FETG STATUS	SOFT FETG	RSVD	TXF RESET	SOFT TXD	TXF STATUS	LOS STATUS	RDYB
UPDATE	6Fh	TEMP RDY	VCC RDY	MON1 RDY	MON2 RDY	MON3 RDY	MON4 RDY	MON5/7 RDY	MON6/8 RDY
ALARM3	70h	TEMP HI	TEMP LO	VCC HI	VCC LO	MON1 HI	MON1 LO	MON2 HI	MON2 LO
ALARM2	71h	MON3 HI	MON3 LO	MON4 HI	MON4 LO	RSVD	RSVD	RSVD	RSVD
ALARM1	72h	RSVD	RSVD	RSVD	RSVD	BIAS HI	RSVD	TXP HI	TXP LO
ALARM0	73h	M3QT HI	RSVD	RSVD	RSVD	BIAS MAX	RSVD	RSVD	RSVD
WARN3	74h	TEMP HI	TEMP LO	VCC HI	VCC LO	MON1 HI	MON1 LO	MON2 HI	MON2 LO
WARN2	75h	MON3 HI	MON3 LO	MON4 HI	MON4 LO	RSVD	RSVD	RSVD	RSVD
RESERVED	76h, 77h	RSVD	RSVD	RSVD	RSVD	RSVD	RSVD	RSVD	RSVD
DOUT	78h	M3QT RESET	SOFT M3QT	RSVD	RSVD	D3 OUT	D2 OUT	D1 OUT	D0 OUT
DIN	79h	INV M3QT	MUX M3QT	INV LOS	MUX LOS	D3 IN	D2 IN	D1 IN	D0 IN
RESERVED	7Ah	RSVD	RSVD	RSVD	RSVD	RSVD	RSVD	RSVD	RSVD
PASSWORD ENTRY	7Bh	231	230	229	228	227	226	225	224
	7Ch	223	222	221	220	219	218	217	216
	7Dh	215	214	213	212	211	210	29	28
	7Eh	27	26	25	24	23	22	21	20
TABLE SELECT	7Fh	27	26	25	24	23	22	21	20

Table 00h

Register Name	Address	Bit7	Bit6	Bit5	Bit4	Bit3	Bit2	Bit1	Bit0
MON5–MOND8 VALUE	80, 82, 84, 86h	215	214	213	212	211	210	29	28
MON5–MOND8 VALUE	81, 83, 85, 87h	27	26	25	24	23	22	21	20

Table 01h

Register Name	Address	Bit7	Bit6	Bit5	Bit4	Bit3	Bit2	Bit1	Bit0
PW1 EEPROM	80h–F7h	EE	EE	EE	EE	EE	EE	EE	EE
ALARM3	F8h	TEMP HI	TEMP LO	VCC HI	VCC LO	MON1 HI	MON1 LO	MON2 HI	MON2 LO
ALARM2	F9h	MON3 HI	MON3 LO	MON4 HI	MON4 LO	RSVD	RSVD	RSVD	RSVD
ALARM1	FAH	RSVD	RSVD	RSVD	RSVD	BIAS HI	RSVD	TXP HI	TXP LO
ALARM0	FBH	M3QT HI	RSVD	RSVD	RSVD	BIAS MAX	RSVD	RSVD	RSVD
WARN3	FCh	TEMP HI	TEMP LO	VCC HI	VCC LO	MON1 HI	MON1 LO	MON2 HI	MON2 LO
WARN2	FDh	MON3 HI	MON3 LO	MON4 HI	MON4 LO	RSVD	RSVD	RSVD	RSVD
RESERVED	FEh–FFh	RSVD	RSVD	RSVD	RSVD	RSVD	RSVD	RSVD	RSVD

Table 02h

Register Name	Address	Bit7	Bit6	Bit5	Bit4	Bit3	Bit2	Bit1	Bit0
MODE	80H	SEEB	RSVD	PWM EN	M4DAC EN	AEN	MOD EN	APC EN	BIAS EN
T INDEX	81h	27	26	25	24	23	22	21	20
MOD DAC	82h	27	26	25	24	23	22	21	20
APC DAC	83h	27	26	25	24	23	22	21	20
V INDEX	84h	27	26	25	24	23	22	21	20
M4DAC	85h	27	26	25	24	23	22	21	20
DEVICE ID	86H	0	1	1	1	0	1	0	1
DEVICE VER	87H	DEVICE VERSION
UPDATE RATE	88h	EE	EE	PWM_FR1	PWM_FR0	APC_SR3	APC_SR2	APC_SR1	APC_SR0
CONFIG	89h	FETG DIR	TXF LEN	M3QT LEN	ASEL	BOLFS	RSSI_FC	RSSI_FF	EN5TO8B
RESERVED	8Ah	RSVD	RSVD	RSVD	RSVD	RSVD	RSVD	RSVD	RSVD
MOD RANGING	8Bh	RSVD	RSVD	RSVD	RSVD	RSVD	MOD2	MOD1	MOD0
DEVICE ADDRESS	8Ch	27	26	25	24	23	22	21	20
COMP RANGING	8Dh	RSVD	BIAS2	BIAS1	BIAS0	RSVD	APC2	APC1	APC0
RIGHT SHIFT1	8Eh	RSVD	MON12	MON11	MON10	RSVD	MON22	MON21	MON20
RIGHT SHIFT0	8Fh	RSVD	MON32	MON31	MON30	RSVD	MON42	MON41	MON40
RESERVED	90h–91h	RSVD	RSVD	RSVD	RSVD	RSVD	RSVD	RSVD	RSVD
VCC SCALE MON1-2 SCALE MON3 FINE SCALE MON4 SCALE MON3 COARSE SCALE	92, 94, 96, 98, 9A, 9Ch	215	214	213	212	211	210	29	28
	93, 95, 97, 99, 9B, 9Dh	27	26	25	24	23	22	21	20
RESERVED	9Eh–A1h	RSVD	RSVD	RSVD	RSVD	RSVD	RSVD	RSVD	RSVD
VCC OFFSET MON1-2 OFFSET MON3 FINE OFFSET MON4 OFFSET MON3 COARSE OFFSET	A2, A4, A6, A8, AA, ACh	S	S	215	214	213	212	211	210
	A3, A5, A7, A9, AB, ADh	29	28	27	26	25	24	23	22
INTERNAL TEMP OFFSET	AEh	S	28	27	26	25	24	23	22
INTERNAL TEMP OFFSET	AFh	21	20	2-1	2-2	2-3	2-4	2-5	2-6
PW1	B0h	231	230	229	228	227	226	225	224
	B1h	223	222	221	220	219	218	217	216
	B2h	215	214	213	212	211	210	29	28
	B3h	27	26	25	24	23	22	21	20
PW2	B4h	231	230	229	228	227	226	225	224
	B5h	223	222	221	<220/td>	219	218	217	216
	B6h	215	214	213	212	211	210	29	28
	B7h	27	26	25	24	23	22	21	20
FETG ENABLE1	B8h	TEMP EN	VCC EN	MON1 EN	MON2 EN	MON3 EN	MON4 EN	RSVD	RSVD
FETG ENABLE0	B9H	TXP HI EN	TXP LO EN	BIAS HI EN	BIAS MAX EN	RSVD	RSVD	RSVD	RSVD
TX-F ENABLE1	BAH	TEMP EN	VCC EN	MON1 EN	MON2 EN	MON3 EN	MON4 EN	RSVD	RSVD
TX-F ENABLE0	BBH	TXP HI EN	TXP LO EN	BIAS HI EN	BIAS MAX EN	RSVD	RSVD	RSVD	FETG EN
HTXP	BCh	27	26	25	24	23	22	21	20
LTXP	BDh	27	26	25	24	23	22	21	20
HBIAS	BEh	27	26	25	24	23	22	21	20
MAX IBIAS	BFh	212	211	210	29	28	27	26	25
DPU	C0h	INV M3QT	MUX M3QT	INV LOS	MUX LOS	D3 CNTL	D2 CNTL	D1 CNTL	D0 CNTL
RESERVED	C1h–C2h	RSVD	RSVD	RSVD	RSVD	RSVD	RSVD	RSVD	RSVD
M3QT DAC	C3h	27	26	25	24	23	22	21	20
DAC1	C4h	27	26	25	24	23	22	21	20
RESERVED	C5h–C6h	RSVD	RSVD	RSVD	RSVD	RSVD	RSVD	RSVD	RSVD
M4 LUT CNTL	C7h	RSVD	RSVD	RSVD	RSVD	FBOL	FBCL	DBL_SB	UP_LOWB
MON5-8 SCALE	C8, CA, CC, CEh	215	214	213	212	211	210	29	28
MON5-8 SCALE	C9, CB, CD, CFh	27	26	25	24	23	22	21	20
MON5-8 OFFSET	D0, D2, D4, D6h	S	S	215	214	213	212	211	210
MON5-8 OFFSET	D1, D3, D5, D7h	29	28	27	26	25	24	23	22
EMPTY	D8h–F7h	EMPTY
MAN IBIAS	F8h	RSVD	RSVD	212	211	210	29	28	27
MAN IBIAS	F9h	27	26	25	24	23	22	21	20
MAN_CNTL	FAh	RSVD	RSVD	RSVD	RSVD	RSVD	RSVD	RSVD	MAN_CLK
BIAS DAC	FBh	BOL	0	212	211	210	29	28	27
BIAS DAC	FCh	27	26	25	24	23	22	21	20
BIAL OL	FDh	27	26	25	24	23	22	21	20
PWM DAC	FEh	27	26	25	24	23	22	21	20
RESERVED	FFh	RSVD	RSVD	RSVD	RSVD	RSVD	RSVD	RSVD	RSVD

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lm1875引腳圖管腳圖典型應用電路圖

2008-01-14 23:51:45

12764

lm1875電路圖

lm1875功放電路圖一： lm1875功放電路圖二：

2008-01-14 23:58:34

43347

lm1875內部電路圖

2008-01-21 19:15:21

5995

LM1875雙電源單電源接法放大電路圖

LM1875雙電源功放電路圖 LM1875單電源功放電路圖

2008-11-18 16:29:04

18877

DS1875 Trends in High-Performa

Trends in High-Performance Power-Supply Design for Automotive Infotainment Abstract: This article provides a practical framework for selecting and optimizing power-supply architectures for autom

2008-12-16 10:42:34

1168

A Quick Guide To Voltage Refer

Abstract: This application note discusses the three basic voltage reference topologies

2009-02-22 14:26:57

1154

DS2151, DS2152, DS2153, DS2154

Abstract: Application Note 325 is a Crystal Selection Guide for these Dallas Single Chip

2009-04-20 09:38:44

760

如何與MAX3735或MAX3741緊湊型激光驅動器連接

摘要：本文闡述了如何將DS1863、DS1865或DS1875 PON控制器/監控電路連接到緊湊的激光驅動器。本應用中所使用的SFP激光驅動器為MAX3736或MAX3741。控制器具有與SFF-8472兼容的數字診斷、激

2009-04-28 11:09:00

657

A Quick-Start Guide to DS1862

Abstract: This application note explains packet-error checking (PEC) as it applies to the DS

2009-04-28 11:16:46

751

LM1875應用電路

2009-08-19 08:22:17

5346

LM1875功放器

LM1875功放器 LM1875采用TO-220封裝結構，形如一只中功率管，體積小巧，外圍電路

2009-12-22 12:32:57

3648

APD非線性響應補償

APD非線性響應補償激光模塊需對雪崩光電二極管(APD)的非線性響應進行補償。本應用筆記以DS1875 SFP控制器為例，探討如何使用Maxim的光控制器完成非線性補償。

2010-01-11 17:48:47

1714

Quick Reference Guide for Programming the DS1877 SFP Controller

Abstract: The DS1877 SFP controller allows various programming options to configure the alarms

2011-12-21 17:34:47

LM1875 PDF下載

lm1875 是一款功率放大無件，LM1875采用TO-220-5封裝結構。形如一只中功率管，體積小巧，外圍電路簡單，且輸出功率較大。該集成電路內部設有過載過熱及感性負載反向電勢安全工作保護

2012-09-19 17:22:57

169

如何設計一個高效率的DC-DC轉換器

Abstract: The DS1875 features a pulse-width modulation (PWM) controller that can be used to control

2012-10-19 17:00:33

253

Model 2182/2182A Nanovoltmeter Quick Reference Guide

keithley源表型號：2182A 用戶手冊

2015-12-04 10:27:29

TMS320F/C24x_DSP_Controllers_Reference_Guide_CPU_and_Instruction_Set

TMS320FC24x DSP Controllers Reference Guide CPU and Instruction Set

2016-01-19 14:23:45

TMS320LF/LC240xA_DSP_Controllers_Reference_Guide_System_and_Peripherals

TMS320LF240xA DSP Controllers System and Peripherals Reference Guide

2016-01-19 14:25:58

TMS320x28xx_DSP_Peripheral_Reference_Guide

TMS320x28xx DSP Peripheral Reference Guide。

2016-01-19 14:27:06

TMS320x28xx_DSP_Serial_Peripheral_Interface(SPI)Reference_Guide

TMS320x28xx DSP Serial Peripheral Interface (SPI) Reference Guide。

2016-01-19 14:28:01

TMS320x281x_DSP_Analog-to-Digital_Converter(ADC)Reference_Guide

TMS320x281x DSP Analog-to-Digital Converter (ADC) Reference Guide。

2016-01-19 14:28:29

TMS320x281x_DSP_Boot_ROM_Reference_Guide

TMS320x281x DSP Boot ROM Reference Guide

2016-01-19 14:28:59

TMS320C6000_Peripherals_Reference_Guide

This reference guide describes the on-chip peripherals of the TMS320C6000 digital signal

2016-01-19 16:58:32

TMS320x2833x_System_Control_and_Interrupts_Reference_Guide

This reference guide is applicable for the systems control and interrupts found on the TMS320F2833x digital signal controllers.

2016-01-19 17:00:43

TMS320x2833x_Boot_ROM_Reference_Guide

This reference guide is applicable for the code and data stored in the on-chip boot ROM

2016-01-19 17:02:10

TMS320x2833x_Direct_Memory_Access(DMA)Module_Reference_Guide

This reference guide describes the features and behavior of the DMA module found

2016-01-19 17:02:50

MAPS-KS22F256_Quick_Start_Guide

2016-06-03 15:37:03

LDC Reference Coils User’s Guide User's Guide

The Texas Instruments LDC (inductance-to-digital converter) reference coil board is a collection

2016-07-20 10:21:23

TMS320x2833x_2823x_Boot_ROM_Reference_Guide

This reference guide is applicable for the code and data stored in the on-chip boot ROM

2016-07-26 10:26:39

lm1875和lm3886哪個好

LM1875的輸出功率最大是30W，LM3886的輸出功率最大是70W，LM1875的諧波失真是0.07，LM3886的諧波失真是0.03，LM1875的頻帶寬度是10-100K（+/-3dB

2017-10-27 11:27:47

142492

Qt Quick中文手冊

Qt Quick中文手冊

2017-10-30 08:53:14

U-Boot.Quick.Reference

2017-10-30 09:26:36

UC1875 相移諧振控制器

電子發燒友網為你提供TI(ti)UC1875相關產品參數、數據手冊，更有UC1875的引腳圖、接線圖、封裝手冊、中文資料、英文資料，UC1875真值表，UC1875管腳等資料，希望可以幫助到廣大的電子工程師們。

2018-11-02 19:05:06

UC1875-SP 相移諧振控制器

電子發燒友網為你提供TI(ti)UC1875-SP相關產品參數、數據手冊，更有UC1875-SP的引腳圖、接線圖、封裝手冊、中文資料、英文資料，UC1875-SP真值表，UC1875-SP管腳等資料，希望可以幫助到廣大的電子工程師們。

2018-11-02 18:58:05

LM1875 20W功率放大器,LM1875 power amplifier

LM1875 20W功率放大器,LM1875 power amplifier 關鍵字：LM1875,LM1875放大器,功率放大器,功放,HIFI,功放電路,功放制作,LM1875電路

2018-09-20 19:03:38

2130

帶高低音調節的LM1875功放電路,LM1875 amplifier

帶高低音調節的LM1875功放電路,LM1875 amplifier 關鍵字：帶高低音調節的LM1875功放電路帶高低音

2018-09-20 19:08:46

7231

快速開始指南：TSL2521_EVM_QG001002_1-00.pdf

TSL2521 Quick Start Guide

2021-02-20 09:02:29

基于LTC1875_Typical Application直流到直流單輸出電源的參考設計

View the reference design for LTC1875_Typical Application. http://www.nxhydt.com/soft/ has

2021-07-30 08:59:09

基于ADP1875_Typical Application直流到直流單輸出電源的參考設計

View the reference design for ADP1875_Typical Application. http://www.nxhydt.com/soft/ has

2021-08-02 16:27:21

如何與MAX3736緊湊型激光驅動器接口

DS1863、DS1865和DS1875控制器提供兩路輸出用于控制激光驅動器：偏置和MOD。BIAS是一款13位電流DAC，滿量程范圍為1.2mA。MOD輸出為8位電壓DAC，滿量程范圍為1.25V。

2023-01-10 14:22:33

547

補償非線性APD響應

光學激光模塊需要補償APD（雪崩光電二極管）的非線性響應。本應用筆記討論了Maxim的光學控制器如何設計以補償這種行為。DS1875 SFP控制器作為本文的示例器件。

2023-01-12 15:31:57

693

ZSSC41xx SSC 評估板 Reference Guide

ZSSC41xx SSC 評估板 Reference Guide

2023-03-15 19:18:41

如何使用DS1875 PWM控制器設計高效的DC-DC轉換器

DS1875具有脈寬調制（PWM）發生器，可用于控制DC-DC轉換器。在典型應用中，PWM控制器用于升壓轉換器，為雪崩光電二極管（APD）產生偏置電壓。DS1875中的PWM控制器可以工作在連續

2023-04-14 11:12:20

1173

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