User's Manual

P440 Data Sheet / User Guide DRAFT 27
Fig. 15c: J8 – Ethernet Mezzanine connector
Fig. 15d: J6 – Factory Mezzanine connector
The Factory Mezzanine connector has a number of GPIO pins and grounds which the user is free to
use. However the remaining lines are NOT available for use. All of these lines are active and are
used by the factory to test the unit as it moves through production. This connector can be used by the
Pin Name Function
1 Digital_GND Digital Ground
2 E_Rx1 Ethernet Rx1
3 E_Rxer Ethernet Rxer
4 E_TxEn Ethernet TxEn
5 E_Tx0 Ethernet Tx0
6 Digital_GND Digital Ground
7 E_Tx1 Ethernet Tx1
8 E_CrsDv Ethernet CrsDv
9 Digital_GND Digital Ground
10 E_TxCk Ethernet TxCk
11 E_Rx0 Ethernet Rx0
12 Digital_GND Digital Ground
13 E_MDIO Ethernet MDIO
14 E_MDC Ethernet MDC
15 Digital_GND Digital Ground
16 Digital_GND Digital Ground
17 ARM_GPIO_0_1.8V ARM General Purpose IO #0, 1.8VDC
18 ARM_GPIO_1_1.8V ARM General Purpose IO #1, 1.8VDC
19 Digital_GND Digital Ground
20 Digital_GND Digital Ground
21 Ext_16MHz_In Reserved
Pin Name Function
1 Reserved
2 Reserved
3 Reserved
4 Reserved
5 Digital_GND Digital Ground
6 Digital_GND Digital Ground
7 Reserved
8 Reserved
9 Reserved
10 Reserved
11 Digital_GND Digital Ground
12 FPGA_GPIO_1_1.8V FPGA General Purpose IO # 1, 1.8VDC
13 Reserved
14 Reserved
15 Reserved
16 Reserved
17 Reserved
18 FPGA_GPIO_0_1.8V FPGA General Purpose IO #0, 1.8VDC
19 Reserved
20 ARM_GPIO_2_3.3V ARM General Purpose IO #2, 3.3VDC
21 Digital_GND Digital Ground