DR-WLS1273L-102 RFM, DR-WLS1273L-102 Datasheet - Page 21

• Manufacturer Part Number: DR-WLS1273L-102
• Description: WiFi / 802.11 Modules 2.4 and 5.8GHz + BT
• Manufacturer: RFM

Specifications of DR-WLS1273L-102

• Rohs: yes
• Protocol Supported: 802.11 a/b/g
• Frequency Band: 64 kHz to 4 GHz
• Data Rate: 1 Mbps, 2 Mbps, 5.5 Mbps, 11 Mbps
• Interface Type: SDIO, UART
• Operating Supply Voltage: 3 V to 4.2 V
• Supply Current Transmitting: 350 mA
• Supply Current Receiving: 150 mA
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Modulation Technique: CCK, DSSS

UART Interface Timing
DR-WLS1273L-102 IRQ Operation
1. The default state of the WLAN_IRQ prior to firmware initialization is 0.
2. During firmware initialization, the WLAN_IRQ is configured by the SDIO module; a WLAN_IRQ
3. A WLAN firmware interrupt is handled as follows:
4. The host is ready to receive another interrupt from the WLAN device.
DR-WLS1273L-102 BT Function Low Power Mode Protocols
The DR-WLS1273L-102 includes a mechanism that handles the transition between operating mode and
deep sleep low-power mode. The protocol is done via the UART and is known as eHCILL (enhanced HCI
Low Level) power management protocol. This protocol is backward compatible with the
BRF6150/BRF6300 /BRF6350/WL1273 HCILL Protocol, so a Host that implements the HCILL for
BRF6150/BRF6350 does not need to change anything in order to work with the DR-WLS1273L-102. The
"Enhanced" portion of the HCILL introduces changes that allow a simpler host implementation of this pro-
tocol. See BT-SW-0024 (BRF Enhanced HCILL 4 wire Power Management Protocol). In addition to the
HCILL protocol, the DR-WLS1273L-102 also supports the power management schemes inherent in the
UART H5 transport layers.
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changes its state to 1
(a) The WLAN firmware creates an Interrupt-to-Host, indicated by a 1-to-0 transition on the WLAN_IRQ
line (host must be configured as active-low or falling-edge detect).
(b) After the host is available, depending on the interrupt priority and other host tasks, it masks the
firmware interrupt. The WLAN_IRQ line returns to 1 (0-to-1 transition on the WLAN_IRQ line).
(c) The host reads the internal register status to determine the interrupt sources - the register is cleared
after the read
(d) The host processes in sequence all the interrupts read from this register
(e) The host unmasks the firmware interrupts.
Symbol
t
BR
5
t
t
t
t
t
, t
3
4
6
1
2
7
Parameter
Baud Rate
Baud Rate Accuracy
CTS Low to TX_DATA
CTS High to TX_DATA
CTS High Pulse Width
RTS Low to RX_DATA ON
RTS High to RX_DATA OFF
Technical support +1.972.448.3700
Interrupt set to 1/4 FIFO
Hardware Flow Control
Most Standard Rates
E-mail:
Receive/Transmit
Condition
[e-mail]
Minimum
37.5
-2.5
0
1
0
-
-
DR-WLS1273L-102 Data Sheet - 12/13/12
Typical
2
2
-
-
-
-
-
Maximum
4000
1.5
16
1
-
-
-
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kbps
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µs
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