platform_reference_manual.md

Platform Reference Manual

Universal Asynchronous Receiver/Transmitter (UART)

Overview

Instances in SOC

Instance Number	Address
0	0x10000000
1	0x10001000
2	0x10002000

Registers

Offset	Name	Description
0x00	reg0	Registers 0
0x04	reg1	Registers 1
0x08	reg2	Registers 2

reg0

Bits	Field Name	Attr.	Rst.	Description
[7:0]	data	RW	X	Transmit/Receiver data
8	erbfi	RW	X	Enable Received Data Available Interrupt
9	etbei	RW	X	Enable Transmit Holding Register Empty Interrupt
10	elsi	RW	X	Enable Receiver Line Status Interrupt
11	edssi	RW	X	Enable MODEM Status Interrupt
[15:12]	Reserved
16	ip	RO	X	interrupt pending
16	fe	WO	X	FIFO Enable
[19:17]	iid	RO	X	interrupt ID[2:0]
17	rfr	WO	X	RCVR FIFO Reset
18	xfr	WO	X	XMIT FIFO Reset
19	dmas	WO	X	DMA Mode Select
[21:20]	Reserved
[23:22]	fstate	RO	X	FIFO State
[23:22]	rrt	WO	X	RCVR Trigger
[25:24]	wls	RW	X	Word Length Select
26	stb	RW	X	Stop Bit Select
27	pen	RW	X	Parity Enable
28	eps	RW	X	Even Parity Select
29	sp	RW	X	Stick Parity
30	sb	RW	X	Set Break
31	dlab	RW	X	Divisor Latch Access Bit

reg1

Bits	Field Name	Attr.	Rst.	Description
0	dtr	RW	X	Data Terminal Ready
1	rts	RW	X	Request To Send
2	out1	RW	X	Output1
3	out2	RW	X	Output2
4	loop	RW	X	Loopback
[7:5]	Reserved
8	dr	RW	X	Data Ready
9	oe	RW	X	Overrun Error
10	pe	RW	X	Parity Error
11	fe	RW	X	Framing Error
12	bi	RW	X	Break Interrupt
13	thre	RW	X	Transmitter Holding Register
14	temt	RW	X	Transmitter Empty
15	fifoerr	RW	X	FIFO Error
16	dcts	RW	X	Delta Clear To Send
17	ddsr	RW	X	Delta Data Set Ready
18	teri	RW	X	Trailing Edge Ring Indicator
19	ddcd	RW	X	Delta Data Carrier Detect
20	cts	RW	X	Clear To Send
21	dsr	RW	X	Data Set Ready
22	ri	RW	X	Ring Indicator
23	dcd	RW	X	Data Carrier Detect
[32:24]	scr	RW	X	Scratch

reg2

Bits	Field Name	Attr.	Rst.	Description
[15:0]	dl	RW	X	Divisor Latch
[31:16]	Reserved

Pulse Width Modulator (PWM)

Overview

Instances in SOC

Instance Number	Address	ncmp	cmpwidth
0	0x1000d000	4	16

Registers

Offset	Name	Description
0x00	pwmcfg	PWM configuration register
0x04	Reserved
0x08	pwmcount	PWM count register
0x0c	Reserved
0x10	pwms	Scaled PWM count register
0x14	Reserved
0x18	Reserved
0x1c	Reserved
0x20	pwmcmp0	PWM compare register 0
0x24	pwmcmp1	PWM compare register 1
0x28	pwmcmp2	PWM compare register 2
0x2c	pwmcmp3	PWM compare register 3

pwmcfg

Bits	Field Name	Attr.	Rst.	Description
[3:0]	pwmscale	RW	X	PWM Counter scale
[7:4]	Reserved
8	pwmsticky	RW	X	PWM Sticky - disallow clearing pwmcmpXip bits
9	pwmzerocmp	RW	X	PWM Zero - counter resets to zero after match
10	pwmdeglitch	RW	X	PWM Deglitch - latch pwmcmp ip within same cycle
11	Reserved
12	pwmenalways	RW	0x0	PWM enable always - run continuously
13	pwmenoneshot	RW	0x0	PWM enable one shot - run one cycle
[15:14]	Reserved
16	pwmcmp0center	RW	X	PWM0 Compare Center
17	pwmcmp1center	RW	X	PWM1 Compare Center
18	pwmcmp2center	RW	X	PWM2 Compare Center
19	pwmcmp3center	RW	X	PWM3 Compare Center
[23:20]	Reserved
24	pwmcmp0gang	RW	X	PWM0/PWM1 Compare Gang
25	pwmcmp1gang	RW	X	PWM1/PWM2 Compare Gang
26	pwmcmp2gang	RW	X	PWM2/PWM3 Compare Gang
27	pwmcmp3gang	RW	X	PWM3/PWM0 Compare Gang
28	pwmcmp0ip	RW	X	PWM0 Interrupt Pending
29	pwmcmp1ip	RW	X	PWM1 Interrupt Pending
30	pwmcmp2ip	RW	X	PWM2 Interrupt Pending
31	pwmcmp3ip	RW	X	PWM3 Interrupt Pending

pwmcount

Bits	Field Name	Attr.	Rst.	Description
[30:0]	pwmcount	RW	X	PWM count register. cmpwidth + 15 bits wide.
[31]	Reserved

pwms

Bits	Field Name	Attr.	Rst.	Description
[15:0]	pwms	RW	X	Scaled PWM count register. cmpwidth bits wide.
[31:16]	Reserved

pwmcmpX (x = 0-3)

Bits	Field Name	Attr.	Rst.	Description
[15:0]	pwmcmpX	RW	X	PWM X compare Value
[31:16]	Reserved

Serial Peripheral Interface (SPI)

Overview

Instances in SOC

Instance Number	Flash Controller	Address	cs_width	div_width
0	Y	0x10007000	1	16

Registers

Offset	Name	Description
0x00	sckdiv	Serial clock divisor
0x04	sckmode	Serial clock mode
0x08	Reserved
0x0C	Reserved
0x10	csid	Chip select ID
0x14	csdef	Chip select default
0x18	csmode	Chip select mode
0x1C	Reserved
0x20	Reserved
0x24	Reserved
0x28	delay0	Delay control 0
0x2C	delay1	Delay control 1
0x30	Reserved
0x34	Reserved
0x38	Reserved
0x3C	Reserved
0x40	fmt	Frame format
0x44	Reserved
0x48	txdata	Tx FIFO Data
0x4C	rxdata	Rx FIFO data
0x50	txmark	Tx FIFO watermark
0x54	rxmark	Rx FIFO watermark
0x58	Reserved
0x5C	Reserved
0x60	fctrl	SPI flash interface control
0x64	ffmt	SPI flash instruction format
0x68	Reserved
0x6C	Reserved
0x70	ie	SPI interrupt enable
0x74	ip	SPI interrupt pending

sckdiv

Bits	Field Name	Attr.	Rst.	Description
[11:0]	div	RW	0x3	Divisor for serial clock. div_width bits wide.
[31:12]	Reserved