BDMR4101

Description

The BDMR4101 is the evaluation board for the 4101 TinyRISC Processor. It comes with it's own special power supply.

Memory Map

	RAM	   a000.0000 1MB
		   a100.0000 8MB Module (optional)
	ROM	   bfc0.0000 4 flash sockets U5,U6,U7,U8
	DUART	   be00.0000 2681
	Ethernet   Sonic 10BaseT only

Interrupts

	int0	2681
	int1	Sonic
	int2	SerialICE Port + external pin if CFG:CPC0EN=1
	int3	external pin if CFG:CPC1EN=1
	int4	external pin if CFG:CPC2EN=1
	int5	external pin if CFG:CPC3EN=1

External Connections

	Power - 5V DC via coaxial power connector
	RS232
		J28 ChanA (PMON console)
		J27 ChanB
	SerialICE Port

Clocks

U52

Clock for CPU.

U53

Clock for SerialICE Port. 1.8432MHz=115200, 20MHz=1250000.

Jumpers

	Jumper In	Jumper Out
J1	Little Endian	Big Endian
J2	Wburstn	-
J3	No Dwrap	Dwrap
J4	No Iwrap	Iwrap
J5-J6	Sram wait states 0 ws (J6=In J5=In) 1 ws (J6=In J5=Out) 2 ws (J6=Out J5=In) 3 ws (J6=Out J5=Out)
J7	BCLK=PCLK	BCLK=0.5*PCLK
J8	Arb_mode1	Arb_mode2
J9,J11	Icache refill size 1 word (J9=In J11=In) 2 word (J9=In J11=Out) 4 word (J9=Out J11=In) 8 word (J9=Out J11=Out)
J10,J12	Default	-
J13,J15	Dcache refill size 1 word (J13=In J15=In) 2 word (J13=In J15=Out) 4 word (J13=Out J15=In) 8 word (J13=Out J15=Out)
J14,J16	Default	-
J17-J18	on board 3.3v	external 3.3v
J19	Default Position 1-2	-
J20	-	Sonic Status
J25	1-2 SerialICE Port Clock comes from oscillator (U53)	2-3 SerialICE Port Clock comes from SerialICE Port connector. A board will always transmit it's osc clock to the connector. It is swapped with the clock input on the other board in the cable.
J26	in - J27 (tty1 connector) acts as tty1. SerialICE uses SerialICE Port connector.	out - J27 is connected to the SerialICE Port through level translators and tty1 is unavailable. This requires that the onboard osc be selected and installed.

IceKernel

• For the wiggler, J25 1-2, J26 in.
• For tty1, J25 1-2, J26 out.