DIL/NetPC DNP/5370: 64-pin DIL Connector Pinout - Alternate Functions

All of the 20 general purpose parallel I/O pins are also used for the alternate SSI and PPI functions. Port B is also the SSI (Synchronous Serial Interface) for audio codec interfacing. Port A, B and C together implements the high-speed PPI (Parallel Peripheral Interface) for video codec interfacing or other very fast 16-bit data acquisition interfaces. The following tables show the details.

Alternate Function: SSI (Synchronous Serial Interface)
Pin	Name	Function	Direction
9	DR.SEC (PG8)	SSI1 Data Receive Secondary	I/O
10	DT.SEC (PG9)	SSI1 Data Transmit Secondary	I/O
11	RS.CLK (PG10)	SSI1 Receive Serial Clock	I/O
12	RF.SYNC (PG11)	SSI1 Receive Frame Sync	I/O
13	DR.PRI (PG12)	SSI1 Data Receive Primary	I/O
13	TS.CLK (PG13)	SSI1 Transmit Serial Clock	I/O
15	TF.SYNC (PG14)	SSI1 Transmit Fram Sync	I/O
16	DT.PRI (PG15)	SSI1 Data Transmit Primary	I/O

Alternate Function: PPI (Parallel Peripheral Interface)
Pin	Name	Function	Direction
1	PPI.D0 (PG0)	PPI Data Bit 0	I/O
2	PPI.D1 (PG1)	PPI Data Bit 1	I/O
3	PPI.D2 (PG2)	PPI Data Bit 2	I/O
4	PPI.D3 (PG3)	PPI Data Bit 3	I/O
5	PPI.D4 (PG4)	PPI Data Bit 4	I/O
6	PPI.D5 (PG5)	PPI Data Bit 5	I/O
7	PPI.D6 (PG6)	PPI Data Bit 6	I/O
8	PPI.D7 (PG7)	PPI Data Bit 7	I/O
9	PPI.D8 (PG8)	PPI Data Bit 8	I/O
10	PPI.D9 (PG9)	PPI Data Bit 9	I/O
11	PPI.D10 (PG10)	PPI Data Bit 10	I/O
12	PPI.D11 (PG11)	PPI Data Bit 11	I/O
13	PPI.D12 (PG12)	PPI Data Bit 12	I/O
14	PPI.D13 (PG13)	PPI Data Bit 13	I/O
15	PPI.D14 (PG14)	PPI Data Bit 14	I/O
16	PPI.D15 (PG15)	PPI Data Bit 15	I/O
17	PPI.FS1 (PF9)	PPI Frame Sync 1	I/O
18	PPI.FS2 (PF8)	PPI Frame Sync 2	I/O
19	PPI.FS3 (PF7)	PPI Frame Sync 3	I/O
20	PPI.CLK (PF15)	PPI Clock	I/O