CoaXPress 2.0 FPGA 4 Channel Host and Device FMC Card User Manual

CXP是一个非对称的高速点对点串行传输协议，主要用于传输视频和静态图像，线缆多使用单条或多条同轴电缆。目前2.0标准的最高速度为单条lane 12.5Gbps，单条lane 上除了传输图像数据之外，还可以传输低速控制信号(41.6Mbps)、也可以利用该线缆对相机进行供电，即“Power-over-Coax”，单条线缆最长可达100m。

单条同轴线缆最高12.5Gbps的线速率，可以使用单条或者多条线缆，比如4条线缆可以最高提供50Gbps的数据速率
较长的线缆长度，比如3.125 Gbps 速率下线长可以到100m，12.5Gbps速率下可以到35m
数据传输具备实时和低延迟的特性，且延迟是固定的
精准实时的触发特性，支持通过同轴线缆发送触发，无需额外的通讯线缆
可以获得灵活可靠的性能，通过使用标准的同轴线缆，比如RG59 和 RG6规格，推荐使用RG6
易于集成的特性，图像、控制通讯、电源可以使用同一条线缆，且线缆价格便宜

CXP是一种点对点可扩展接口, 设备和HOST之间的物理介质为75Ω 同轴电缆。每一个CXP接口都包含1个MASTER连接和若干可选的扩展SLAVE连接，每一个连接都需要1条同轴线缆，通常设备会对这些连接进行编号，MASTER固定为0，SLAVE扩展接口依次递增。

图示

描述已自动生成

图 1‑1 CXP链接结构

每一个connection都包含如下功能

高速串行数据(通常为Device到 Host downconnection), 最高 12.5 Gbps.
低速串行数据(通常为Host 到Device upconnection), 最高 41.6˙ Mbps .
供电功能Power (Host 到 Device), 最高13W.

CoaXPress 4R FMC

为了评估IP功能，快速实现应用，Hello-FPGA开发了4通道CoaXPress 收发模块，其中收模块定义如下，配合Hello-FPGA的CoaXPress Host IP可以实现自定义相机Grabber采集、处理应用：

硬件特性

▪ 最高支持4 CoaXPress links

▪ 支持POE Power over CoaXPress功能，用户可选外部供电或者使用板上12V电源

▪ 4 x Micro BNC 连接器

▪ HPC连接器 – High Pin count connector，VITA 57.1 compliant

▪ 尺寸63mm x 84mm, 单槽 FMC

▪ 最高支持速率 12.5Gpbs，支持CoaXPress 2.0协议标称所有速率，使用高速PCB板材

▪ - 40°C to 85°C 工作温度 (industrial grade)

▪ 板载2Kb EEPROM，可以用于写入用户特定信息

▪ 板载4路power 功率监测电路，用户可以实时监测供电情况

图 2‑1 Hello-FPGA 4R FMC Card Simple Diagram

图 2‑2 Hello-FPGA 4R FMC Card

框图说明

图 2‑3 CoaXPress 4R FMC detailed diagram

HPC FMC连接器，使用FMC高密度连接器，符合VITA 57.1标准；
Equalizer/Driver均衡器与驱动器，接收来自相机的高速downlink信号，发送来组FMC IO的低速控制信号；
LED，每个通道配置1个双色LED，可以通过FMC IO实现R,G颜色任意组合；
EEPROM，使用IIC接口的MT24C02 EEPROM，256Bytes容量，可以用于存储用户数据；
24V DC Power, 24V DC电源电路，可以接受来自FMC的12V或者来自外部电源的12V供电电源，为power on cable功能提供DC电源，理论CXP每通道提供最大13W输出功率；
Power monitor，每路CoaXPress提供1路电流、电压监测电路，当电流超过门限后，会通过alert 端口向外发出警告；
MicroBNC, 根据CoaXPress标准，子板使用MircroBNC连接器连接Device设备；

电源监测

使用4路PAC1720进行电源监测，4路IIC设备地址分别为0x48.0x49.0x5a,0x5b，分别对应channel 0-3。

图示, 示意图

描述已自动生成

图 2‑4 channel 0电源监测电路

PAC1720功能说明：

PoE电流监测,通过SENSE1+和SENSE1-引脚两端的外部电阻（图中R44）上的电压间接得到(需结合FSR的设定)；
PoE电压监测，通过SENSE2+引脚可以获取1/2的PoE电压，从而间接获取PoE电压；
过流提醒，用户可以编程限定PoE电压流过的电流，在过流时将ALERT信号拉低，从而触发电源控制系统；
通讯地址选择，用户可以通过改变ADDR_SEL引脚对地的电阻值来改变I2C的地址；

备注：具体功能参数设定，请参考PAC1720 datasheet。我们的范例程序会包含电源监测部分示例源代码供测试、参考。

CoaXPress 4T FMC

为了评估IP功能，快速实现应用，Hello-FPGA开发了4通道CoaXPress 收发模块，其中发模块定义如下，配合Hello-FPGA CoaXPress Device IP，可以实现相机、图像模拟源的开发应用：

硬件特性

▪ 最高支持4 CoaXPress links

▪ 4 x Micro BNC 连接器

▪ HPC连接器 – High Pin count connector，VITA 57.1 compliant

▪ 尺寸63mm x 84mm, 单槽 FMC

▪ 最高支持速率 12.5Gpbs，支持CoaXPress 2.0协议标称所有速率，使用高速PCB板材

▪ - 40°C to 85°C 工作温度 (industrial grade)

▪ 板载2Kb EEPROM，可以用于写入用户特定信息

图 3‑1 Hello-FPGA 4T FMC Card Simple Diagram

图 3‑2 Hello-FPGA 4T FMC Card

框图说明

图 3‑3 CoaXPress 4R FMC detailed diagram

HPC FMC连接器，使用FMC高密度连接器，符合VITA 57.1标准；
Equalizer/Driver均衡器与驱动器，发送来自FPGA高速收发器的高速downlink信号，接受来组Grabber的低速控制信号；
LED，每个通道配置1个双色LED，可以通过FMC IO实现R,G颜色任意组合；
EEPROM，使用IIC接口的MT24C02 EEPROM，256Bytes容量，可以用于存储用户数据；
MicroBNC, 根据CoaXPress标准，子板使用MircroBNC连接器连接Grabber采集设备；

FMC PIN定义

这里的pin定义适用于Hello-FPGA CoaXPress 4R/4T FMC硬件。

图 4‑1 HPC FMC pins

表 4‑1 CoaXPress 4 Channel FMC Pin Map

#	FMC PIN name	信号名称	描述
A1	GND	-	Signal GND
A2	DP1_M2C_P	CH1_RXp	CoaXPress channel 1 fast speed link Receive (Positive) Grabber Only
A3	DP1_M2C_N	CH1_RXn	CoaXPress channel 1 fast speed link Receive (Negative)
A4	GND	-	Signal GND
A5	GND	-	Signal GND
A6	DP2_M2C_P	CH2_RXp	CoaXPress channel 2 fast speed link Receive (Positive) Grabber Only
A7	DP2_M2C_N	CH2_RXn	CoaXPress channel 2 fast speed link Receive (Negative)
A8	GND	-	Signal GND
A9	GND	-	Signal GND
A10	DP3_M2C_P	CH3_RXp	CoaXPress channel 3 fast speed link Receive (Positive) Grabber Only
A11	DP3_M2C_N	CH3_RXn	CoaXPress channel 3 fast speed link Receive (Negative)
A12	GND	-	Signal GND
A13	GND	-	Signal GND
A14	DP4_M2C_P	N/C	NC
A15	DP4_M2C_N	N/C	NC
A16	GND	-	Signal GND
A17	GND	-	Signal GND
A18	DP5_M2C_P	N/C	NC
A19	DP5_M2C_N	N/C	NC
A20	GND	-	Signal GND
A21	GND	-	Signal GND
A22	DP1_C2M_P	CH1_TXp	CoaXPress channel 1 fast speed link Transmit (Positive) Device Only
A23	DP1_C2M_N	CH1_TXn	CoaXPress channel 1 fast speed link Transmit (Negative)
A24	GND	-	Signal GND
A25	GND	-	Signal GND
A26	DP2_C2M_P	CH2_TXp	CoaXPress channel 2 fast speed link Transmit (Positive) Device Only
A27	DP2_C2M_N	CH2_TXn	CoaXPress channel 2 fast speed link Transmit (Negative)
A28	GND	-	Signal GND
A29	GND	-	Signal GND
A30	DP3_C2M_P	CH3_TXp	CoaXPress channel 3 fast speed link Transmit (Positive) Device Only
A31	DP3_C2M_N	CH3_TXn	CoaXPress channel 3 fast speed link Transmit (Negative)
A32	GND	-	Signal GND
A33	GND	-	Signal GND
A34	DP4_C2M_P	N/C	NC
A35	DP4_C2M_N	N/C	NC
A36	GND	-	Signal GND
A37	GND	-	Signal GND
A38	DP5_C2M_P	N/C	NC
A39	DP5_C2M_N	N/C	NC
A40	GND	-	Signal GND
B1	CLK_DIR	N/C	NC
B2	GND	-	Signal GND
B3	GND	-	Signal GND
B4	DP9_M2C_P	N/C	NC
B5	DP9_M2C_N	N/C	NC
B6	GND	-	Signal GND
B7	GND	-	Signal GND
B8	DP8_M2C_P	N/C	NC
B9	DP8_M2C_N	N/C	NC
B10	GND	-	Signal GND
B11	GND	-	Signal GND
B12	DP7_M2C_P	N/C	NC
B13	DP7_M2C_N	N/C	NC
B14	GND	-	Signal GND
B15	GND	-	Signal GND
B16	DP6_M2C_P	N/C	NC
B17	DP6_M2C_N	N/C	NC
B18	GND	-	Signal GND
B19	GND	-	Signal GND
B20	GBTCLK1_M2C_P	GND	Pulled to GND
B21	GBTCLK1_M2C_N	VADJ	Adjustable voltage for I/O signals to FPGA
B22	GND	-	Signal GND
B23	GND	-	Signal GND
B24	DP9_C2M_P	N/C	NC
B25	DP9_C2M_N	N/C	NC
B26	GND	-	Signal GND
B27	GND	-	Signal GND
B28	DP8_C2M_P	N/C	NC
B29	DP8_C2M_N	N/C	NC
B30	GND	-	Signal GND
B31	GND	-	Signal GND
B32	DP7_C2M_P	N/C	NC
B33	DP7_C2M_N	N/C	NC
B34	GND	-	Signal GND
B35	GND	-	Signal GND
B36	DP6_C2M_P	N/C	NC
B37	DP6_C2M_N	N/C	NC
B38	GND	-	Signal GND
B39	GND	-	Signal GND
B40	RES0	N/C	NC
C1	GND	-	Signal GND
C2	DP0_C2M_P	CH0_TXp	CoaXPress channel 0 fast speed link Transmit (Positive) Device Only
C3	DP0_C2M_N	CH0_TXn	CoaXPress channel 0 fast speed link Transmit (Negative)
C4	GND	-	Signal GND
C5	GND	-	Signal GND
C6	DP0_M2C_P	CH0_RXp	CoaXPress channel 0 fast speed link Receive (Positive) Grabber Only
C7	DP0_M2C_N	CH0_RXn	CoaXPress channel 0 fast speed link Receive (Negative)
C8	GND	-	Signal GND
C9	GND	-	Signal GND
C10	LA06_P	N/C	NC
C11	LA06_N	N/C	NC
C12	GND	-	Signal GND
C13	GND	-	Signal GND
C14	LA10_P	N/C	NC
C15	LA10_N	N/C	NC
C16	GND	-	Signal GND
C17	GND	-	Signal GND
C18	LA14_P	CH3_LED0	Channel 3 Green indicator LED (Active high)
C19	LA14_N	CH3_LED1	Channel 3 Red indicator LED (Active high)
C20	GND	-	Signal GND
C21	GND	-	Signal GND
C22	LA18_P_CC	CH0_ALERT	Channel 0 PoCXP alert indicator(Active high)
C23	LA18_N_CC	N/C	NC
C24	GND	-	Signal GND
C25	GND	-	Signal GND
C26	LA27_P	N/C	NC
C27	LA27_N	N/C	NC
C28	GND	-	Signal GND
C29	GND	-	Signal GND
C30	SCL	SCL	IIC clock Connected to EEPROM and PoCXP power monitor ADCs
C31	SDA	SDA	IIC data Connected to EEPROM and PoCXP power monitor ADCs
C32	GND	-	Signal GND
C33	GND	-	Signal GND
C34	GA0	N/C	NC
C35	12P0V	12V	12V power supply
C36	GND	-	Signal GND
C37	12P0V	12V	12V power supply
C38	GND	-	Signal GND
C39	3P3V	3.3V	3.3V Power supply
C40	GND	-	Signal GND
D1	PG_C2M	N/C	NC
D2	GND	-	Signal GND
D3	GND	-	Signal GND
D4	GBTCLK0_M2C_P	CLK_125M_P	125MHz Reference clock (Positive) ±25ppm / -40℃ to +85℃
D5	GBTCLK0_M2C_N	CLK_125M_N	125MHz Reference clock (Negative)
D6	GND	-	Signal GND
D7	GND	-	Signal GND
D8	LA01_P_CC	CH2_LF	CoaXPress channel 2 low speed link TX/RX (Rx for Device, TX for Grabber)
D9	LA01_N_CC	CH1_LF	CoaXPress channel 1 low speed link TX/RX(Rx for Device, TX for Grabber)
D10	GND	-	Signal GND
D11	LA05_P	N/C	NC
D12	LA05_N	N/C	NC
D13	GND	-	Signal GND
D14	LA09_P	N/C	NC
D15	LA09_N	N/C	NC
D16	GND	-	Signal GND
D17	LA13_P	CH2_LED0	Channel 2 Green indicator LED (Active high)
D18	LA13_N	CH2_LED1	Channel 2 Red indicator LED (Active high)
D19	GND	-	Signal GND
D20	LA17_P_CC	N/C	NC
D21	LA17_N_CC	N/C	NC
D22	GND	-	Signal GND
D23	LA23_P	N/C	NC
D24	LA23_N	N/C	NC
D25	GND	-	Signal GND
D26	LA26_P	N/C	NC
D27	LA26_N	N/C	NC
D28	GND	-	Signal GND
D29	TCK	N/C	NC
D30	TDI	TD	JTAG Loopback
D31	TDO	TD	JTAG Loopback
D32	3P3VAUX	3.3V_AUX	Auxiliary 3.3V
D33	TMS	N/C	NC
D34	TRST_L	N/C	NC
D35	GA1	N/C	NC
D36	3P3V	3.3V	3.3V Power supply
D37	GND	-	Signal GND
D38	3P3V	3.3V	3.3V Power supply
D39	GND	-	Signal GND
D40	3P3V	3.3V	3.3V Power supply
E1	GND	-	Signal GND
E2	HA01_P_CC	N/C	NC
E3	HA01_N_CC	N/C	NC
E4	GND	-	Signal GND
E5	GND	-	Signal GND
E6	HA05_P	N/C	NC
E7	HA05_N	N/C	NC
E8	GND	-	Signal GND
E9	HA09_P	N/C	NC
E10	HA09_N	N/C	NC
E11	GND	-	Signal GND
E12	HA13_P	N/C	NC
E13	HA13_N	N/C	NC
E14	GND	-	Signal GND
E15	HA16_P	N/C	NC
E16	HA16_N	N/C	NC
E17	GND	-	Signal GND
E18	HA20_P	N/C	NC
E19	HA20_N	N/C	NC
E20	GND	-	Signal GND
E21	HB03_P	N/C	NC
E22	HB03_N	N/C	NC
E23	GND	-	Signal GND
E24	HB05_P	N/C	NC
E25	HB05_N	N/C	NC
E26	GND	-	Signal GND
E27	HB09_P	N/C	NC
E28	HB09_N	N/C	NC
E29	GND	-	Signal GND
E30	HB13_P	N/C	NC
E31	HB13_N	N/C	NC
E32	GND	-	Signal GND
E33	HB19_P	N/C	NC
E34	HB19_N	N/C	NC
E35	GND	-	Signal GND
E36	HB21_P	N/C	NC
E37	HB21_N	N/C	NC
E38	GND	-	Signal GND
E39	VADJ	VADJ	Adjustable voltage for I/O signals to FPGA
E40	GND	-	Signal GND
F1	PG_M2C	3.3V	Pulled to 3.3V
F2	GND	-	Signal GND
F3	GND	-	Signal GND
F4	HA00_P_CC	N/C	NC
F5	HA00_N_CC	N/C	NC
F6	GND	-	Signal GND
F7	HA04_P	N/C	NC
F8	HA04_N	N/C	NC
F9	GND	-	Signal GND
F10	HA08_P	N/C	NC
F11	HA08_N	N/C	NC
F12	GND	-	Signal GND
F13	HA12_P	N/C	NC
F14	HA12_N	N/C	NC
F15	GND	-	Signal GND
F16	HA15_P	N/C	NC
F17	HA15_N	N/C	NC
F18	GND	-	Signal GND
F19	HA19_P	N/C	NC
F20	HA19_N	N/C	NC
F21	GND	-	Signal GND
F22	HB02_P	N/C	NC
F23	HB02_N	N/C	NC
F24	GND	-	Signal GND
F25	HB04_P	N/C	NC
F26	HB04_N	N/C	NC
F27	GND	-	Signal GND
F28	HB08_P	N/C	NC
F29	HB08_N	N/C	NC
F30	GND	-	Signal GND
F31	HB12_P	N/C	NC
F32	HB12_N	N/C	NC
F33	GND	-	Signal GND
F34	HB16_P	N/C	NC
F35	HB16_N	N/C	NC
F36	GND	-	Signal GND
F37	HB20_P	N/C	NC
F38	HB20_N	N/C	NC
F39	GND	-	Signal GND
F40	VADJ	VADJ	Adjustable voltage for I/O signals to FPGA
G1	GND	-	Signal GND
G2	CLK1_M2C_P	N/C	NC
G3	CLK1_M2C_N	N/C	NC
G4	GND	-	Signal GND
G5	GND	-	Signal GND
G6	LA00_P_CC	CH0_LF	CoaXPress channel 0 low speed link TX/RX
G7	LA00_N_CC	N/C	NC
G8	GND	-	Signal GND
G9	LA03_P	N/C	NC
G10	LA03_N	N/C	NC
G11	GND	-	Signal GND
G12	LA08_P	N/C	NC
G13	LA08_N	N/C	NC
G14	GND	-	Signal GND
G15	LA12_P	CH1_LED0	Channel 1 Green indicator LED (Active high)
G16	LA12_N	CH1_LED1	Channel 1 Red indicator LED (Active high)
G17	GND	-	Signal GND
G18	LA16_P	N/C	NC
G19	LA16_N	N/C	NC
G20	GND	-	Signal GND
G21	LA20_P	N/C	NC
G22	LA20_N	CH3_ALERT	Channel 3 PoCXP alert indicator (Active high)
G23	GND	-	Signal GND
G24	LA22_P	CH3_ON	Channel 3 PoCXP enable (Active high)
G25	LA22_N	CH2_ON	Channel 2 PoCXP enable (Active high)
G26	GND	-	Signal GND
G27	LA25_P	N/C	NC
G28	LA25_N	N/C	NC
G29	GND	-	Signal GND
G30	LA29_P	N/C	NC
G31	LA29_N	N/C	NC
G32	GND	-	Signal GND
G33	LA31_P	N/C	NC
G34	LA31_N	N/C	NC
G35	GND	-	Signal GND
G36	LA33_P	N/C	NC
G37	LA33_N	N/C	NC
G38	GND	-	Signal GND
G39	VADJ	VADJ	Adjustable voltage for I/O signals to FPGA
G40	GND	-	Signal GND
H1	VREF_A_M2C	N/C	NC
H2	PRSNT_M2C_L	GND	Pulled Low
H3	GND	-	Signal GND
H4	CLK0_M2C_P	GND	Pulled to GND
H5	CLK0_M2C_N	VADJ	Adjustable voltage for I/O signals to FPGA
H6	GND	-	Signal GND
H7	LA02_P	N/C	NC
H8	LA02_N	CH3_LF	CoaXPress channel 3 low speed link TX/RX
H9	GND	-	Signal GND
H10	LA04_P	N/C	NC
H11	LA04_N	N/C	NC
H12	GND	-	Signal GND
H13	LA07_P	N/C	NC
H14	LA07_N	N/C	NC
H15	GND	-	Signal GND
H16	LA11_P	CH0_LED0	Channel 0 Green indicator LED (Active high)
H17	LA11_N	CH0_LED1	Channel 0 Red indicator LED (Active high)
H18	GND	-	Signal GND
H19	LA15_P	N/C	NC
H20	LA15_N	N/C	NC
H21	GND	-	Signal GND
H22	LA19_P	CH2_ALERT	Channel 2 PoCXP alert indicator (Active high)
H23	LA19_N	CH1_ALERT	Channel 1 PoCXP alert indicator (Active high)
H24	GND	-	Signal GND
H25	LA21_P	CH1_ON	Channel 1 PoCXP enable (Active high)
H26	LA21_N	CH0_ON	Channel 0 PoCXP enable (Active high)
H27	GND	-	Signal GND
H28	LA24_P	N/C	NC
H29	LA24_N	N/C	NC
H30	GND	-	Signal GND
H31	LA28_P	N/C	NC
H32	LA28_N	N/C	NC
H33	GND	-	Signal GND
H34	LA30_P	N/C	NC
H35	LA30_N	N/C	NC
H36	GND	-	Signal GND
H37	LA32_P	N/C	NC
H38	LA32_N	N/C	NC
H39	GND	-	Signal GND
H40	VADJ	VADJ	Adjustable voltage for I/O signals to FPGA
J1	GND	-	Signal GND
J2	CLK3_BIDIR_P	N/C	NC
J3	CLK3_BIDIR _N	N/C	NC
J4	GND	-	Signal GND
J5	GND	-	Signal GND
J6	HA03_P	N/C	NC
J7	HA03_N	N/C	NC
J8	GND	-	Signal GND
J9	HA07_P	N/C	NC
J10	HA07_N	N/C	NC
J11	GND	-	Signal GND
J12	HA11_P	N/C	NC
J13	HA11_N	N/C	NC
J14	GND	-	Signal GND
J15	HA14_P	N/C	NC
J16	HA14_N	N/C	NC
J17	GND	-	Signal GND
J18	HA18_P	N/C	NC
J19	HA18_N	N/C	NC
J20	GND	-	Signal GND
J21	HA22_P	N/C	NC
J22	HA22_N	N/C	NC
J23	GND	-	Signal GND
J24	HB01_P	N/C	NC
J25	HB01_N	N/C	NC
J26	GND	-	Signal GND
J27	HB07_P	N/C	NC
J28	HB07_N	N/C	NC
J29	GND	-	Signal GND
J30	HB11_P	N/C	NC
J31	HB11_N	N/C	NC
J32	GND	-	Signal GND
J33	HB15_P	N/C	NC
J34	HB15_N	N/C	NC
J35	GND	-	Signal GND
J36	HB18_P	N/C	NC
J37	HB18_N	N/C	NC
J38	GND	-	Signal GND
J39	VIO_B_M2C	VADJ	Adjustable voltage for I/O signals to FPGA
J40	GND	-	Signal GND
K1	VREF_B_M2C	N/C	NC
K2	GND	-	Signal GND
K3	GND	-	Signal GND
K4	CLK2_BIDIR _P	GND	Pulled to GND
K5	CLK2_BIDIR _N	VADJ	Adjustable voltage for I/O signals to FPGA
K6	GND	-	Signal GND
K7	HA02_P	N/C	NC
K8	HA02_N	N/C	NC
K9	GND	-	Signal GND
K10	HA06_P	N/C	NC
K11	HA06_N	N/C	NC
K12	GND	-	Signal GND
K13	HA10_P	N/C	NC
K14	HA10_N	N/C	NC
K15	GND	-	Signal GND
K16	HA17_P_CC	N/C	NC
K17	HA17_N_CC	N/C	NC
K18	GND	-	Signal GND
K19	HA21_P	N/C	NC
K20	HA21_N	N/C	NC
K21	GND	-	Signal GND
K22	HA23_P	N/C	NC
K23	HA23_N	N/C	NC
K24	GND	-	Signal GND
K25	HB00_P_CC	N/C	NC
K26	HB00_N_CC	N/C	NC
K27	GND	-	Signal GND
K28	HB06_P_CC	N/C	NC
K29	HB06_N_CC	N/C	NC
K30	GND	-	Signal GND
K31	HB10_P	N/C	NC
K32	HB10_N	N/C	NC
K33	GND	-	Signal GND
K34	HB14_P	N/C	NC
K35	HB14_N	N/C	NC
K36	GND	-	Signal GND
K37	HB17_P_CC	N/C	NC
K38	HB17_N_CC	N/C	NC
K39	GND	-	Signal GND
K40	VIO_B_M2C	VADJ	Adjustable voltage for I/O signals to FPGA

Annex A：参考资料

1、CoaXPess JIIA CXP-001-2021

2、https://www.cnblogs.com/xingce/category/2165251.html

posted @ 2023-09-27 10:36 Hello-FPGA 阅读(685) 评论(0) 编辑收藏举报

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