EM260-BBRD-128K-USART-R Ember, EM260-BBRD-128K-USART-R Datasheet - Page 33

• Manufacturer Part Number: EM260-BBRD-128K-USART-R
• Description: EM260 BREAKOUT BOARD
• Manufacturer: Ember
• Type: Transceiver, 802.15.4/ZigBeer

Specifications of EM260-BBRD-128K-USART-R

• Frequency: 2.4GHz
• For Use With/related Products: EM260
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 636-1026

nHOST_INT
nWAKE
nSSEL
SCLK
MOSI
MISO
5.7.4
1.
2.
3.
4.
5.
6.
7.
8.
9.
10. Transmit and receive
11. Receive response
12. Bit 7 is always set and bit 6 is always cleared in the Version Response, so this is Version 2.
13. Deactivate Slave Select.
14. Host begins timing the inter-command spacing of 1ms in preparation for sending the next command.
15. nHOST_INT asserts shortly after deactivating Slave Select, indicating a callback.
16. Host sees nHOST_INT, but waits for the 1ms before responding.
17. Activate Slave Select.
18. Transmit the command:
19. Wait for nHOST_INT to assert.
20. Transmit and receive
21. Receive response
•
•
•
•
•
•
Activate nWAKE and activate timeout timer.
EM260 wakes up (if not already) and enables communication.
nHOST_INT asserts, indicating the EM260 can accept commands.
Host sees nHOST_INT activation within 10ms and deactivates nWAKE and timeout timer.
nHOST_INT deasserts immediately after nWAKE.
Activate Slave Select.
Transmit the Command
Transmit the Frame Terminator,
Wait for nHOST_INT to assert.
0xA7
0x0A
Three-Part Transaction: Wake, Get Version, Stack Status Callback
0xFE
0x03
0x00
0x00
0x06
Cmd
0xA7
: Frame Terminator
: SPI Byte indicating an EZSP Frame
: Length Byte showing the EZSP Frame is 3 bytes long
: EZSP Sequence Byte (Note that this value should vary based upon previous sequence bytes)
: EZSP Frame Control Byte indicating a command with no sleeping
: EZSP Frame ID Byte indicating the
Wait
0x82
0xFE
0x82
Figure 12. Timing Diagram of the Three-Part Transaction
Resp
0xFF
0xFF
(a byte other than
(a byte other than
0x0A
0xA7
until a byte other than
until a byte other than
- SPI Protocol Version Request.
0xA7
.
0xFE
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0x03
0xFF
0xFF
callback
Command
0x00
), then receive the Frame Terminator,
), read the next byte for a length.
0xFF
0xFF
0x00
command
0x06
is received.
is received.
0xA7
Wait
0xFE
0x04
0x00
Response
0x80
0xA7
0x19
.
EM260
120-0260-000J
0x91
0xA7