acq_core_regs

BPM FSM Acquisition registers

Wishbone slave for BPM Core Acquisition

1. Memory map summary
2. HDL symbol
3. Register description
3.1. Control register
3.2. Status register
3.3. Trigger configuration
3.4. Trigger delay
3.5. Software trigger
3.6. Number of shots
3.7. Trigger address register
3.8. Pre-trigger samples
3.9. Post-trigger samples
3.10. Samples counter
3.11. DDR3 Start Address
3.12. Acquisition channel control

1. Memory map summary

H/W Address	Type	Name	VHDL/Verilog prefix	C prefix
0x0	REG	Control register	acq_core_ctl	CTL
0x1	REG	Status register	acq_core_sta	STA
0x2	REG	Trigger configuration	acq_core_trig_cfg	TRIG_CFG
0x3	REG	Trigger delay	acq_core_trig_dly	TRIG_DLY
0x4	REG	Software trigger	acq_core_sw_trig	SW_TRIG
0x5	REG	Number of shots	acq_core_shots	SHOTS
0x6	REG	Trigger address register	acq_core_trig_pos	TRIG_POS
0x7	REG	Pre-trigger samples	acq_core_pre_samples	PRE_SAMPLES
0x8	REG	Post-trigger samples	acq_core_post_samples	POST_SAMPLES
0x9	REG	Samples counter	acq_core_samples_cnt	SAMPLES_CNT
0xa	REG	DDR3 Start Address	acq_core_ddr3_start_addr	DDR3_START_ADDR
0xb	REG	Acquisition channel control	acq_core_acq_chan_ctl	ACQ_CHAN_CTL

2. HDL symbol

→	rst_n_i	Control register:
→	clk_sys_i	acq_core_ctl_fsm_start_acq_o	→
⇒	wb_adr_i[3:0]	acq_core_ctl_fsm_stop_acq_o	→
⇒	wb_dat_i[31:0]	acq_core_ctl_reserved1_o[13:0]	⇒
⇐	wb_dat_o[31:0]	acq_core_ctl_fsm_acq_now_o	→
→	wb_cyc_i	acq_core_ctl_reserved2_o[14:0]	⇒
⇒	wb_sel_i[3:0]
→	wb_stb_i	Status register:
→	wb_we_i	acq_core_sta_fsm_state_i[2:0]	⇐
←	wb_ack_o	acq_core_sta_fsm_acq_done_i	←
←	wb_stall_o	acq_core_sta_reserved1_i[3:0]	⇐
		acq_core_sta_fc_trans_done_i	←
		acq_core_sta_fc_full_i	←
		acq_core_sta_reserved2_i[5:0]	⇐
		acq_core_sta_ddr3_trans_done_i	←
		acq_core_sta_reserved3_i[14:0]	⇐

		Trigger configuration:
		acq_core_trig_cfg_hw_trig_sel_o	→
		acq_core_trig_cfg_hw_trig_pol_o	→
		acq_core_trig_cfg_hw_trig_en_o	→
		acq_core_trig_cfg_sw_trig_en_o	→
		acq_core_trig_cfg_int_trig_sel_o[1:0]	⇒
		acq_core_trig_cfg_reserved_o[9:0]	⇒
		acq_core_trig_cfg_int_trig_thres_o[15:0]	⇒

		Trigger delay:
		acq_core_trig_dly_o[31:0]	⇒

		Software trigger:
		acq_core_sw_trig_o[31:0]	⇒
		acq_core_sw_trig_wr_o	→

		Number of shots:
		acq_core_shots_nb_o[15:0]	⇒
		acq_core_shots_reserved_o[15:0]	⇒

		Trigger address register:
		acq_core_trig_pos_i[31:0]	⇐

		Pre-trigger samples:
		acq_core_pre_samples_o[31:0]	⇒

		Post-trigger samples:
		acq_core_post_samples_o[31:0]	⇒

		Samples counter:
		acq_core_samples_cnt_i[31:0]	⇐

		DDR3 Start Address:
		acq_core_ddr3_start_addr_o[31:0]	⇒

		Acquisition channel control:
		acq_core_acq_chan_ctl_which_o[4:0]	⇒

3. Register description

3.1. Control register

HW prefix:	acq_core_ctl
HW address:	0x0
C prefix:	CTL
C offset:	0x0

31	30	29	28	27	26	25	24
RESERVED2[14:7]

23	22	21	20	19	18	17	16
RESERVED2[6:0]							FSM_ACQ_NOW

15	14	13	12	11	10	9	8
RESERVED1[13:6]

7	6	5	4	3	2	1	0
RESERVED1[5:0]						FSM_STOP_ACQ	FSM_START_ACQ

FSM_START_ACQ [write-only]: State machine acquisition_start command (ignore on read)
1: ACQ_START (start acquisition, only when FSM is idle)
FSM_STOP_ACQ [write-only]: State machine stop command (ignore on read)
1: ACQ_STOP (stop acquisition, anytime)
RESERVED1 [read/write]: Reserved1
Ignore on read, write with 0's
FSM_ACQ_NOW [read/write]: Acquire data immediately and don't wait for any trigger (ignore on read)
1: Acquire immediately
0: Wait for trigger
RESERVED2 [read/write]: Reserved2
Ignore on read, write with 0's

3.2. Status register

HW prefix:	acq_core_sta
HW address:	0x1
C prefix:	STA
C offset:	0x4

31	30	29	28	27	26	25	24
RESERVED3[14:7]

23	22	21	20	19	18	17	16
RESERVED3[6:0]							DDR3_TRANS_DONE

15	14	13	12	11	10	9	8
RESERVED2[5:0]						FC_FULL	FC_TRANS_DONE

7	6	5	4	3	2	1	0
RESERVED1[3:0]				FSM_ACQ_DONE	FSM_STATE[2:0]

FSM_STATE [read-only]: State machine status
States:
0: illegal
1: IDLE
2: PRE_TRIG
3: WAIT_TRIG
4: POST_TRIG
5: DECR_SHOT
6: illegal
7: illegal
FSM_ACQ_DONE [read-only]: FSM acquisition status
Values:
0: in progress
1: completed
RESERVED1 [read-only]: Reserved
Ignore on read, write with 0's
FC_TRANS_DONE [read-only]: External flow control transfer status
Values:
0: in progress
1: completed
FC_FULL [read-only]: External flow control FIFO full status
Values:
0: not full
1: full (data may be lost)
RESERVED2 [read-only]: Reserved
Ignore on read, write with 0's
DDR3_TRANS_DONE [read-only]: DDR3 transfer status
Values:
0: in progress
1: completed
RESERVED3 [read-only]: Reserved
Ignore on read, write with 0's

3.3. Trigger configuration

HW prefix:	acq_core_trig_cfg
HW address:	0x2
C prefix:	TRIG_CFG
C offset:	0x8

31	30	29	28	27	26	25	24
INT_TRIG_THRES[15:8]

23	22	21	20	19	18	17	16
INT_TRIG_THRES[7:0]

15	14	13	12	11	10	9	8
RESERVED[9:2]

7	6	5	4	3	2	1	0
RESERVED[1:0]		INT_TRIG_SEL[1:0]		SW_TRIG_EN	HW_TRIG_EN	HW_TRIG_POL	HW_TRIG_SEL

HW_TRIG_SEL [read/write]: Hardware trigger selection
0: internal (data threshold)
1: external (front panel trigger input)
HW_TRIG_POL [read/write]: Hardware trigger polarity
0: positive edge/slope
1: negative edge/slope
HW_TRIG_EN [read/write]: Hardware trigger enable
0: disable
1: enable
SW_TRIG_EN [read/write]: Software trigger enable
0: disable
1: enable
INT_TRIG_SEL [read/write]: Channel selection for internal trigger
00: channel 1
01: channel 2
10: channel 3
11: channel 4
RESERVED [read/write]: Reserved
Ignore on read, write with 0's
INT_TRIG_THRES [read/write]: Threshold for internal trigger
Treated as binary two's complement and compared to raw ADC data

3.4. Trigger delay

HW prefix:	acq_core_trig_dly
HW address:	0x3
C prefix:	TRIG_DLY
C offset:	0xc

31	30	29	28	27	26	25	24
TRIG_DLY[31:24]

23	22	21	20	19	18	17	16
TRIG_DLY[23:16]

15	14	13	12	11	10	9	8
TRIG_DLY[15:8]

7	6	5	4	3	2	1	0
TRIG_DLY[7:0]

TRIG_DLY [read/write]: Trigger delay value
Delay to apply on the trigger in sampling clock period.
The default clock frequency is 100MHz (period = 10ns).

3.5. Software trigger

HW prefix:	acq_core_sw_trig
HW address:	0x4
C prefix:	SW_TRIG
C offset:	0x10

Writing (anything) to this register generates a software trigger.

31	30	29	28	27	26	25	24
SW_TRIG[31:24]

23	22	21	20	19	18	17	16
SW_TRIG[23:16]

15	14	13	12	11	10	9	8
SW_TRIG[15:8]

7	6	5	4	3	2	1	0
SW_TRIG[7:0]

SW_TRIG [write-only]: Software trigger (ignore on read)

3.6. Number of shots

HW prefix:	acq_core_shots
HW address:	0x5
C prefix:	SHOTS
C offset:	0x14

31	30	29	28	27	26	25	24
RESERVED[15:8]

23	22	21	20	19	18	17	16
RESERVED[7:0]

15	14	13	12	11	10	9	8
NB[15:8]

7	6	5	4	3	2	1	0
NB[7:0]

NB [read/write]: Number of shots
Number of shots required in multi-shot mode, set to one for single-shot mode.
RESERVED [read/write]: Reserved
Ignore on read, write with 0's

3.7. Trigger address register

HW prefix:	acq_core_trig_pos
HW address:	0x6
C prefix:	TRIG_POS
C offset:	0x18

31	30	29	28	27	26	25	24
TRIG_POS[31:24]

23	22	21	20	19	18	17	16
TRIG_POS[23:16]

15	14	13	12	11	10	9	8
TRIG_POS[15:8]

7	6	5	4	3	2	1	0
TRIG_POS[7:0]

TRIG_POS [read-only]: Trigger address
Trigger address in DDR memory.
Only used in single-shot mode.

3.8. Pre-trigger samples

HW prefix:	acq_core_pre_samples
HW address:	0x7
C prefix:	PRE_SAMPLES
C offset:	0x1c

31	30	29	28	27	26	25	24
PRE_SAMPLES[31:24]

23	22	21	20	19	18	17	16
PRE_SAMPLES[23:16]

15	14	13	12	11	10	9	8
PRE_SAMPLES[15:8]

7	6	5	4	3	2	1	0
PRE_SAMPLES[7:0]

PRE_SAMPLES [read/write]: Pre-trigger samples
Number of requested pre-trigger samples

3.9. Post-trigger samples

HW prefix:	acq_core_post_samples
HW address:	0x8
C prefix:	POST_SAMPLES
C offset:	0x20

31	30	29	28	27	26	25	24
POST_SAMPLES[31:24]

23	22	21	20	19	18	17	16
POST_SAMPLES[23:16]

15	14	13	12	11	10	9	8
POST_SAMPLES[15:8]

7	6	5	4	3	2	1	0
POST_SAMPLES[7:0]

POST_SAMPLES [read/write]: Post-trigger samples
Number of requested post-trigger samples

3.10. Samples counter

HW prefix:	acq_core_samples_cnt
HW address:	0x9
C prefix:	SAMPLES_CNT
C offset:	0x24

31	30	29	28	27	26	25	24
SAMPLES_CNT[31:24]

23	22	21	20	19	18	17	16
SAMPLES_CNT[23:16]

15	14	13	12	11	10	9	8
SAMPLES_CNT[15:8]

7	6	5	4	3	2	1	0
SAMPLES_CNT[7:0]

SAMPLES_CNT [read-only]: Samples counter
Counts the number of samples.
It is reset on START and then counts the number of pre-trigger + post-trigger samples

3.11. DDR3 Start Address

HW prefix:	acq_core_ddr3_start_addr
HW address:	0xa
C prefix:	DDR3_START_ADDR
C offset:	0x28

31	30	29	28	27	26	25	24
DDR3_START_ADDR[31:24]

23	22	21	20	19	18	17	16
DDR3_START_ADDR[23:16]

15	14	13	12	11	10	9	8
DDR3_START_ADDR[15:8]

7	6	5	4	3	2	1	0
DDR3_START_ADDR[7:0]

DDR3_START_ADDR [read/write]: DDR3 Start Address
Start address in DDR3 memory for the next acquisition.
Must be word aligned (2 LSB zeroed)

3.12. Acquisition channel control

HW prefix:	acq_core_acq_chan_ctl
HW address:	0xb
C prefix:	ACQ_CHAN_CTL
C offset:	0x2c

31	30	29	28	27	26	25	24
-	-	-	-	-	-	-	-

23	22	21	20	19	18	17	16
-	-	-	-	-	-	-	-

15	14	13	12	11	10	9	8
-	-	-	-	-	-	-	-

7	6	5	4	3	2	1	0
-	-	-	WHICH[4:0]

WHICH [read/write]: Acquisition channel selection
Selection of path to acquire on next acquisition.

acq_core_regs

BPM FSM Acquisition registers

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