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Terminal Configuration and Functions
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13
SWRS225B – FEBRUARY 2019 – REVISED MARCH 2020
Table 4-1. Pin Description and Attributes (continued)
PIN
DEFAULT FUNCTION
DIGITAL I/O
STATE AT
RESET AND
HIBERNATE
I/O TYPE
CC3135 DEVICE PIN
NO.
DESCRIPTION
HOSTLESS
MODE
BLE COEX
CC_COEX_
OUT
CC_COEX_
IN
45
NC
N/A
N/A
N/A
–
–
-
No Connect
46
UART1_TX
-
-
-
Hi-Z
O
55
UART interface to host (transmit)
47
UART1_RX
-
-
-
Hi-Z
I
57
UART interface to host (receive)
48
TEST_58
Y
Y
Y
Hi-Z
O
58
Test signal; connect to an external test point.
49
TEST_59
Y
Y
Y
Hi-Z
O
59
Test signal; connect to an external test point.
50
TEST_60
Y
Y
Y
Hi-Z
O
60
Test signal; connect to an external test point.
51
UART1_nCTS
-
-
-
Hi-Z
I
61
UART interface to host (clear to send)
52
TEST_62
-
-
-
Hi-Z
O
62
Test signal; connect to an external test point.
53
DIO8
Y
Y
Y
Hi-Z
63
Digital input or output
54
DIO9
Y
Y
Y
Hi-Z
–
64
Digital input or output
(1) I = input, O = output, RF = radio frequency, I/O = bidirectional
(2) Output Only