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i.MX51 Generic Reference Design
160
170
180
190
200
210
220
Ethernet PHY
USB Keyboard and TouchPad
FM Radio Receiver
Audio CODEC and Amplifier
DVI Display
Freescale Semiconductor Confidential
Expansion Header230
iMX Control
LVDS Display
DISP connector Light sensor
240
250 JTAG, DBG-UART, BOOT_Config
Full System Power Control
DC Input
040
050
060
070
080
090
Table of Contents
100
020 System Block Diagram
030 Notes For Programmers
DC2DC 3V3
010 Title, TOC and Rev History
Power Management
iMX Power Rails
iMX IPU and Misc. Interface
110
120
130
140
150
BOOT SPI-NOR and MMC-SD
DDR-2 Interface
SATA Hard Disk Drive
USB BOOT and USB Host1
USB 7-Port Hub
USB Peripherals
Because of an order from the United States International Trade Commission, BGA-packaged product lines and part numbers indicated here currently are not
available from Freescale for import or sale in the United States prior to September 2010: i.MX51 product family, MC13892 product family.
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i.MX51
System
128MB X 4 DDR-2 (512MB)
4MB SPI NOR (BOOT)
SD/MMC-1
4/8-bit (BOOT)
SD/MMC-2 (4-bit)
Expansion Header (24X3)
USB-H1 PHY
7-port USB HUB
EMI 16-bit and NAND
8-bit Exp. Hdr.
USB-OTG
UART-1
JTAG
10/100
Ethernet
Phy.
1. Host Port-1
2. Host Port-2
3. Disp. Panel Cam.
4. mini PCIe
5. KB & PS2 Ctl.
6. SATA HDD Bridge
7. Host Port-7
3V3 BuckAtals-APL
Audio
CODEC
FM
Tuner
Audio
Power
Amp.
Ambient
Light
Sensor
Video
DAC
LVDS
Tx
DVI
Tx
Display Port-2
Expansion Header
5V DC IN
R
L
Stereo
HP
VoIP
HP
CONN-HDD
CONN
KB+TP
CONN
miniPCIe
CONN CAM.
CONN HP-2
CONN HP-1
CONN
Micro USB
CONN JTAG
CONN UART
DB-9 (F)
CONN ETH.
CONN
LVDS
CONN
DVI-I
CONN
RTP
32-bit DDR-2
SPI-1
SS-1
SD/MMC-1
(4/8 bit)
SD/MMC-2
(4 bit)
USB Host-1 ULPI
USB-OTG-Port
JTAG
UART-1
10/100 FEC
SPI-1 : SS-0
Disp-1 : 24-bit : 2V7
Disp-2 : 16/18-bit : 2V7
Expansion
Peripherals *
Mem. Expansion **
Expansion Peripherals *
Mem. Expansion **
KP : 4-ROW X 4-COL,
UART-2, UART-3, GPIO (3),
TV-RGB, CLK-OUT, PWM,
SPDIF, CSI-1:12-bit, I2C-1,
USB-H7, SPI-1 SS2, SSI-AUD-6,
SD-2 : 4-bit
EIM - 16 bit : MUXED, CS0, CS1
NANDF: 8-bit : CS0, CS1
SPI-1 : SS1, HS-I2C
I2C-2 : 2V7
SPI-1 : SS-2 : 2V7
SSI - AUD-3 :2V7
I2C-1 :1V8
I2C-1 : 3V3
I2C-1
3V3/1V8
HS-I2C
Babbage-2 System Block Diagram
Power Generation and Management Block
BOOT and
Sys CTL
I2C-DDC
I2C-2 : 5V
I2C-2 : 2V7
I2C-2 : 2V7
I2C-1 : 3V3
I2C-2 : 2V7
BOOT Mode
Selection
ON/OFF
Switch
RESET
Switch
Because of an order from the United States International Trade Commission, BGA-packaged product lines and part numbers indicated here currently are not
available from Freescale for import or sale in the United States prior to September 2010: i.MX51 product family, MC13892 product family.
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1. Since IPU_Port_2 has two loads (DVI and LVDS), this may require a different (higher) drive strength setting than IPU_Port_2
Programmers Notes
Daily change report
April 20
(1) change the R246 to DNP for Audio function
(2) Change the C53 tolerance to 10V
(3) Change the R243 Q17 R85 and C81 DNP
(5) change the RN2 and RN3 to MNR15E0RPJ103;change the RN4 toMNR15E0RPJ102
April 22
(1) change the R20 value to 120K
(6) change the PAD1---PAD5 to 0ohm 0805 resistor
(4) Add the missing GND net of the U234
April 24
(1) change the J12 manufacture NO. to FH12-26S-1SH(55). 1mm pitch connector for Keypad
(2) Change the Y5 to DNP
(3) Change J3 to through hole 1x4 2.54 pitch connector
(4) Change the R397 and R398 to DNP
(5) Change the R277 and R279 to DNP. And R285 should be installed.
(6) Change the U44A,L31-L39,C345-C360,R265-R268,D30-D34 to DNP to disable the VGA function
(7) DNP the U4,Q1-Q4,D6,D7,D9,D10,L1,J2,R14-R28,R30,R31,R33-R35 and c4-c31 to disable the battery charger function
(8) Change the R60 value to 13.7K
(9) Change the R58 value to 33K
April 27
(1) change the value of R58 to 38.3K
(2) DNP J3
(3) DNP L22
April 28
(1) change C68 to 150-77976 10V tolerance
(2) C73 change back to 150-75182
(3) C47,C48 change back to 150-75837
(4) Populate R72 and R76, DNP R71 and R75
(5) change R11, R179 to 470-75597
(6) Change the value of R170 to 33ohm
(7) Change the value of R365-R372 to 1Kohm
(8) Change R341 to 470-75591
(9) Change R314 and R315's footprint to 0402
(10) change C243,C245,C248,C251 to T491C107K016ZT, 100uF/16V
(11) change Y1 to 230-77492
(12) change Y3 to 230-77493, change the C250 and C253 to 15pF
(13) change Y6 to 230-77493, change the C384 and C385 to 15pF, change R333 to 1.0M
(14) change Y5 to 230-77047
(15) change Y2 to 230-77698
(16) change Y4 and Y7 to 230-76393, change C301, C302, C420 and C421 to 10pF
(17) C42,C43,C51,C52 need to be Panasonic T520B157M006ATE045 (Low ESR)
(18) change L40,L45,L46 to be 300Ohm@100MHz FB
April 29
(1) change C410 footprint to 0402
(2) Correct the connection of the J9
(3) Change J5 to 5622-1200-ML
May 4
(1) change U41A and U44A to U41 and U44
(2) Swap the connection of the J16 to be compatible with SGTL Nand board
(3) C2 is too large in value. Time delay too big for power-off. Change C2 to 22uF 20V.
(4) put 0-ohm series resistor on DDC-SCL and DDC_SDA lines (0402) R1002 and R1003
May 6
(1) change Y3 back to ECS part,change C250 and C253 back to 33pF
(2) Change the net name PWR_ON_OFF_BYPASS2 to PWR_ON_OFF_BYPASS
(3) As Babin David comment, DNP D11 and D14
(4) Add R1004 a series zero-ohm on VREG and DNP
(5) Correct the connection of the Y2
(6) Swape the R474 and R476, also R292 and R270
(7) change the DDR2 chips to EDE1116AEBG-8E-F to support 800Mhz
May 7
(1) change D11,D14 and D24 to fairchild LED part QTLP600CBTR
(2) Adjust the connecton of J18, add the backlight of the AAPL
May 11
(1) Add Pad6 and Pad7 to support the external 5V power supply
(2) Use DI_GP1 and DI_GP2 as LCD interrupt and LP mode
May 12
(1) Add R1011 and R1012, the series resistors on I2C of U234
(2) populated the C337
(3) change R1 and R3 to diode
May 13
(1) Delete D8, add Q2001 P-FET for reverse polarity protection.
(2) Delete the MAX8505 and other peripheral components
(3) Change R58 to 33.2K/1% to make TPS51124 LX1 output 3.3V
(4) Update the power supply circuit for AAPL
(5) Add R3002 and R3003 to make the PMIC_STBY_REQ signal alternatively
(6) Change the value C250 and C253 to 15pF
(7) update the connection of the display connector
(8) Add 330pF capacitors to GND of DVI I2C
(9) Update the connection of the Expansion connector
I2C Port Summary
MX51
Port
Voltage
Rail
Device
Primary
Address
Secondary
Address
Comment
I2C1 1.8 FM
Radio
0010000x
I2C1 1.8
Expansion
Connector
---
Level
converted
I2C1 3.3
Expansion
Connector
---
Level
converted
I2C1 3.3
USB
Hub (option)
Level
converted
I2C1 3.3
LVDS
Connector
Level
converted
I2C2 2.775
Audio
CODEC
0001010x
I2C2 2.775 DVI
Chip
1110010x 1110110x
I2C2 2.775
Parallel
Dumb Display
Connector
I2C2 2.775
Ambient
Light Sensor
1000100x
I2C2 5 DVI
Connector
0110111x 0101000x
Level
converted
May 14
(1) Move R98 and R99 to I2C master
(2) correct GND nets throughout the entire design
(3) U11, U12, U13 should all be eliminated from the board. We do not need the SST part
May 15
(1) Change U14 to 4MB Flash
May18
(1) SD_MMC_CD_B move to GPIO1_6. New net name is SD_MMC_CD_B(GPIO1_6).WDOG_B move to GPIO1_4. New name is WDOG_B(GPIO1_4).
DISP_CARD_DET_B move to DI1_PIN13. (This is new signal for Babb-2.5.) New name is DISP_CARD_DET_B(DI1_PIN13_GPIO3_2).
(2) Add 5V_MAIN control circuit
May 20
(1) Delete TPS51124, add the Linear 3.3V buck LT3681
May 21
(1) Change the 3V3 regulator
(2) U7 pin K9 to J14 pin 83 with 10K 1% pullup to 3V15_BOOT Net name = "ACCESSORY_CARD_ID0"
U7 pin M11 to J14 pin 61 with 10K 1% pullup to 3V15_BOOT Net name = "ACCESSORY_CARD_ID1"
use R69, R68 for 10K 1% resistors. delete R73.
(3) Delete GPO1\SPI1_SS2_DISP_HDR_EN_B\SPI1_SS2_EXP_HDR_EN_B\3V3_V5A_PWRGD\BATT_IN(GPIO1_22)
May 25
(1) Add the R5019
(2) Change the part number of the H1 to H4
(3) Add DISP2_RESET net, change net ACCESSORY_CARD_DETECT_B to GPIO4_13
(4) Change Q2002 to Q2004 to make sure the power dissipation enough
(5) pull up WDOG_B(GPIO1_4) to 2V775_BOOT and DNP R89
(6) DNP R423,R424,R425 and R428
(7) Populate the R132
(8) Change R146 and R147 to 1K 0.5% precision
May 27
(1) Add R6001 the pull down resistor
(2) update the connection of J14
(3) Change R250 pull up to V_SPKR
Jun 2
(1) change a larger MOSFET for Q2001
(2) Delete R131
(3) Change H1-H4 DNP
(4) DNP Keyboard page, FM receiver page and light sensor moduler
(5) Update the Sw1 and Sw4 circuit design of AAPL, change to P-FET
(6) Change the C3001 to 10uF
June 3
(1) Populate CON1
(2) J14 pin 52... connect to pin 61. PORT_ID1
(3) Change another part for Q2002-Q2004
(4) Add D7001,D7002,R7001 and R7002
June 4
(1) DNP R337
June 5
(1) Populate Q5001 and DNP R5010
(2) Change R146 and R147 to 1K 1% precision
June 11
(1) Change the Y2 P/N, 2.775V power supply
(2) Add the Analog Devices RGB circuit back into the board
(3) Change DVI_i2C bypass capactiors to 220pF
(12) Populate R399 and R400
(2) Connect Atlas pin D8 to GND
(3) DNP L1001
(8) Disconnect ADIN5 from Card-detect. Tie it to 10K/10K
resistor divider to GPO1 of Atlas (Babbage2.5 tie directly to
VCOREDIG)
July 13
(1) Change R3001 value to 0.02ohm
(4) Populate R5010, DNP R5009,Q5001,U5002
(11) Change R1001 and R1002 to FB8001 and FB8002
(10) Change the JTAG part number
(9) R332 change to 2.2K ,R329 change to 2.2K, DNP
(5) Populate R89
(6) DNP R68
(13) Add GPIO4_14 to control DVI I2C level shifter and DNP 220pF capacitor
(7) Add R8001 100K resistor in parallel with C70
(14) Change Y2 and Y6 part
Because of an order from the United States International Trade Commission, BGA-packaged product lines and part numbers indicated here currently are not
available from Freescale for import or sale in the United States prior to September 2010: i.MX51 product family, MC13892 product family.
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4
3
3
2
2
1
1
D D
C C
B B
A A
GND
1V8_DIG1
GND
GND
GND
GND GND
5V_IN
5V_IN
GND
GND
SYS_ON_OFF_REQ <11>
SYS_ON_OFF_CTL(GPIO1_23) <9>
SYS_ON_OFF_CTL(Atlas) <7>
MAIN_PWR_ON <5,6>
PWR_ON_OFF_BYPASS <25>
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If system is OFF,
press momentary contact switch to turn system ON.
If system is ON,
press momentary contact switch to start s/w based
shutdown_entry or resume operation.
If system is hung, press contact switch for at least 10 seconds.
Remote switch hook-up option
System Power Control
Note:
To increase or decrease the forced turn-off time, change RC timing by changing R2 and C2.
TP1 and TP2 on top.
TP3 and TP4 on bottom.
Silk screen label as GND.
R7
10K
R7
10K
U1
NLX2G14
U1
NLX2G14
VCC
5
A2
3
GND
2
Y2
6
A1
1
Y1
4
R11
100K
R11
100K
U2
FDC6331L
U2
FDC6331L
V_IN_R1
4
ON_OFF
5
R1_C1
6
R2
1
V_OUT_C1_2
2
V_OUT_C1_1
3
TP3TP3
D1
BAS16H
D1
BAS16H
2 1
R2
220K
R2
220K
D4
BAS16H
D4
BAS16H
21
TP2TP2
R10
10K
R10
10K
SW1
SPST PB
SW1
SPST PB
1 3
42
R6
10K
R6
10K
D7001
BAS16H
D7001
BAS16H
21
+
C2
22uF
+
C2
22uF
D2
BAS16H
D2
BAS16H
21
D7002
BAS16H
D7002
BAS16H
2 1
TP1TP1
R7002
1K
R7002
1K
R8
2.2K
R8
2.2K
D3
BAS16H
D3
BAS16H
2 1
R5 100KR5 100K
R9
47K
R9
47K
TP19TP19
TP4TP4
C3
1uF
C3
1uF
R4
10K
R4
10K
C1
0.1UF
C1
0.1UF
TP15TP15
R7001
1K
R7001
1K
D5
BAS16H
D5
BAS16H
21
U3
NL17SZ06
U3
NL17SZ06
NC
1
IN
2
GND
3
VCC
5
OUT
4
Because of an order from the United States International Trade Commission, BGA-packaged product lines and part numbers indicated here currently are not
available from Freescale for import or sale in the United States prior to September 2010: i.MX51 product family, MC13892 product family.
5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
GND
GND GND
5V_MAIN 5V_IN
GND
MAIN_PWR_ON <4,6>
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DC Input
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5V DC in
R4001
10K
R4001
10K
D9
3PF
D9
3PF
1
1
2
2
F1
SF-0603F
F1
SF-0603F
1 2
J1
CON PWR 3
J1
CON PWR 3
1
1
3
3
2
2
P_GND1
4
P_GND2
5
Q2005
2N7002
Q2005
2N7002
3
1
2
Q2001
IRLML6401
Q2001
IRLML6401
1
3 2
C2001
47uF
C2001
47uF
R5019 0DNPR5019 0DNP
Because of an order from the United States International Trade Commission, BGA-packaged product lines and part numbers indicated here currently are not
available from Freescale for import or sale in the United States prior to September 2010: i.MX51 product family, MC13892 product family.
