Serial Port

There is a serial port on the PLAY5. It connects to PA9 / SMTXD2 and PA8 / SMRXD2.

Pinout is as follows:

1 - +3.3V

2 - TXD

3 - RXD

4 - GND

My PLAY5 does not boot far enough to enable the serial port, so I have not seen anything come out or determined the baud rate. But I confirmed the connections via JTAG boundary scan.

Below is a picture of the serial port header. The square pin with the white dot above it is pin 1.

UPDATE: After some coaxing (cold spray on the boot ROM) I now get thru the bootloader! Baud rate is 38400. Does not seem to do anything after "Starting application" though.

U-Boot 1.1.1(1-16-4-zp5s-0.5), Build: zp5s-0.5

MPC8272 Reset Status: External Soft, External Hard

MPC8272 Clock Configuration

- Bus-to-Core Mult 3x, VCO Div 4, 60x Bus Freq 16-50 , Core Freq 50-150

- dfbrg 1, corecnf 0x10, busdf 3, cpmdf 1, plldf 0, pllmf 3

- vco_out 400000000, scc_clk 100000000, brg_clk 25000000

- cpu_clk 300000000, cpm_clk 200000000, bus_clk 100000000

- pci_clk 33333333

CPU: MPC8272 (HiP7 Rev 14, Mask unknown [immr=0x0d10,k=0x00e1]) at 300 MHz

Board: Sonos ZP5S

DRAM: 32 MB

IMMR: f0000000

DRAM tests running ... done

Using default environment

In: serial

Out: serial

Err: serial

Net: FCC1 ETHERNET, FCC2 ETHERNET

Hit any key to stop autoboot: 0

NAND ID is 20:75

32M NAND flash (ST NAND256W3A)

S0 provisionally good, KP=1, G9

S1 provisionally good, KP=4, G8

Boot from partition 1

## Starting application at 0x00400000 ..�����������������������������������������������������������������������������������������������������������������.