SWRU382E July   2014  – November 2023 WL1807MOD , WL1837MOD

 

  1.   1
  2.   WL1837MODCOM8I WLAN MIMO and Bluetooth Module Evaluation Board for TI Sitara Platform
  3.   Trademarks
  4.   Warning
  5. 1Overview
    1. 1.1 General Features
    2. 1.2 Key Benefits
    3. 1.3 Applications
  6. 2Board Pin Assignment
    1. 2.1 Pin Description
    2. 2.2 Jumper Connections
  7. 3Electrical Characteristics
  8. 4Approved Antenna Types and Maximum Gain Values
  9. 5Antenna Characteristics
    1. 5.1 VSWR
    2. 5.2 Efficiency
    3. 5.3 Radio Pattern
  10. 6Circuit Design
    1. 6.1 EVB Reference Schematics
    2. 6.2 Bill of Materials (BOM)
  11. 7Layout Guidelines
    1. 7.1 Board Layout
  12. 8Ordering Information
  13. 9Revision History

2.1 Pin Description

Table 2-1 describes the board pins.

Table 2-1 Pin Description
No. Name Type Description
1 SLOW_CLK I Slow clock input option (default: NU)
2 GND G Ground
3 GND G Ground
4 WL_EN I WLAN enable
5 VBAT P 3.6-V typical voltage input
6 GND G Ground
7 VBAT P 3.6-V typical voltage input
8 VIO P VIO 1.8-V (I/O voltage) input
9 GND G Ground
10 N.C. No connection
11 WL_RS232_TX O WLAN tool RS232 output
12 N.C. No connection
13 WL_RS232_RX I WLAN tool RS232 input
14 N.C. No connection
15 WL_UART_DBG O WLAN Logger output
16 N.C. No connection
17 N.C. No connection
18 GND G Ground
19 GND G Ground
20 SDIO_CLK I WLAN SDIO clock
21 N.C. No connection
22 GND G Ground
23 N.C. No connection
24 SDIO_CMD I/O WLAN SDIO command
25 N.C. No connection
26 SDIO_D0 I/O WLAN SDIO data bit 0
27 N.C. No connection
28 SDIO_D1 I/O WLAN SDIO data bit 1
29 N.C. No connection
30 SDIO_D2 I/O WLAN SDIO data bit 2
31 N.C. No connection
32 SDIO_D3 I/O WLAN SDIO data bit 3
33 N.C. No connection
34 WLAN_IRQ O WLAN SDIO interrupt out
35 N.C. No connection
36 N.C. No connection
37 GND G Ground
38 N.C. No connection
39 N.C. No connection
40 N.C. No connection
41 N.C. No connection
42 GND G Ground
43 N.C. No connection
44 N.C. No connection
45 N.C. No connection
46 N.C. No connection
47 GND G Ground
48 N.C. No connection
49 N.C. No connection
50 N.C. No connection
51 N.C. No connection
52 PCM_IF_CLK I/O Bluetooth PCM clock input or output
53 N.C. No connection
54 PCM_IF_FSYNC I/O Bluetooth PCM frame sync input or output
55 N.C. No connection
56 PCM_IF_DIN I Bluetooth PCM data input
57 N.C. No connection
58 PCM_IF_DOUT O Bluetooth PCM data output
59 N.C. No connection
60 GND G Ground
61 N.C. No connection
62 N.C. No connection
63 GND G Ground
64 GND G Ground
65 N.C. No connection
66 BT_UART_IF_TX O Bluetooth HCI UART transmit output
67 N.C. No connection
68 BT_UART_IF_RX I Bluetooth HCI UART receive input
69 N.C. No connection
70 BT_UART_IF_CTS I Bluetooth HCI UART Clear-to-Send input
71 N.C. No connection
72 BT_UART_IF_RTS O Bluetooth HCI UART Request-to-Send output
73 N.C. No connection
74 RESERVED1 O Reserved
75 N.C. No connection
76 BT_UART_DEBUG O Bluetooth Logger UART output
77 GND G Ground
78 GPIO9 I/O General-purpose I/O
79 N.C. No connection
80 N.C. No connection
81 N.C. No connection
82 N.C. No connection
83 GND G Ground
84 N.C. No connection
85 N.C. No connection
86 N.C. No connection
87 GND G Ground
88 N.C. No connection
89 BT_EN I Bluetooth enable
90 N.C. No connection
91 N.C. No connection
92 GND G Ground
93 RESERVED2 I Reserved
94 N.C. No connection
95 GND G Ground
96 GPIO11 I/O General-purpose I/O
97 GND G Ground
98 GPIO12 I/O General-purpose I/O
99 TCXO_CLK_COM I Option to supply 26 MHz externally
100 GPIO10 I/O General-purpose I/O