GPIO (General Purpose Input / Output)

DS113 Schematic v2.7 2017-02-17 page 3, lists PA(18) with PA7-PA16 used as GPIO.
PA7	ETXD0
PA8	ERXCK
PA9	ERXERR
PA10	ERXDV
PA11	EMDC
PA12	EMDIO
PA13	ETXEN
PA14	ETXCK
PA15	ECRS
PA16	ECOL

Datasheet page 13, lists these all as Type = I/O, Reset State = Z, Default Pull Up/Down = NO PULL, Buffer Strength (mA) = 20
			Ball #
PA7	ETXD0	E8
PA8	ERXCK	D9
PA9	ERXERR	E9
PA10	ERXDV	D10
PA11	EMDC		E10
PA12	EMDIO	D11
PA13	ETXEN	E11
PA14	ETXCK	D12
PA15	ECRS		E12
PA16	ECOL		D13

DS113 Schematic page 6, shows the U1-C pins for PA7-PA16 connected to the signals ethernet signals listed above.

But DS113 Schematic page 13, which shows the 68-pin connector CON15, doesn’t mention any of these signals and has at least 8 pins named “NC”?

The microdesktop housing board schematic v1.7 page 1 shows the 68-pin connector as J14 with pins labelled as

PIN#	Name		Connected Net
16	GPIO_0	SD0-D3
50	GPIO_1	SD0-D2
17	GPIO_2	VESA_SDA
51	GPIO_3	GPIO_3
18	GPIO_4	SD0-CMD
52	GPIO_5	SD0-CLK
19	GPIO_6	SD0-D0
53	GPIO_7	SD0-D1
20	GPIO_8
54	GPIO_9
21	GPIO_10
55	GPIO_11
22	GPIO_12	VESA_SCL

I haven’t yet found an equivalence mapping between the pinouts of the two 68-pin connectors of the two schematics.