RTL8192CE

Datasheet

Single-Chip IEEE 802.11b/g/n 2T2R WLAN Controller

with PCI Express Interface

10

Track ID: Rev.0.1

5.6. Clock and Other Pins

Table 6. Clock and Other Pins

Symbol

Type

Pin No

Description

XI

I

41

40MHz OSC Input

Input of 40MHz Crystal clock reference

XO

O

42

Output of 40MHz Crystal Clock Reference

CK_BT_40M

O

43

Buffered 40M clock outputs for other peripheral IC

PDn

I

49

This Pin can Externally Shutdown RTL8192CE without Extra Power Switch

This pin can also support WLAN Radio off function with host interface

remaining connected.

EEPROMSEL/EESK

I

14

Trap function: Weakly pull high at power on to indicate the presence of

external EEPROM. 1: external EEPROM, 0: internal eFuse.

EEPROM Interface EESK Signal

GPIO0/WLAN_ACT

IO

45

General Purpose Input/Output Pin or Bluetooth Coexistence WLAN_ACT

Pin

The WLAN_ACT signal indicates when WLAN is either transmitting or

receiving in the 2.4GHz ISM band.

GPIO1/WLAN_RX

IO

46

Trap Function: Weakly pull high at power on to turn on CK_BT_40M.

General Purpose Input/Output Pin or Bluetooth Coexistence WLAN_RX Pin

WLAN_RX is an indicator for wireless LAN RX activity.

GPIO2/BT_STATE

IO

47

General Purpose Input/Output Pin or Bluetooth Coexistence BT_STAT Pin

The BTSTAT signal indicates when normal Bluetooth packets are being

transmitted or received.

GPIO3/BT_PRI

IO

48

General Purpose Input/Output Pin or Bluetooth Coexistence BT_PRI Pin

The BTPRI signal indicates when a high priority Bluetooth packet is being

transmitted or received.

GPIO4

IO

10

General Purpose Input/Output Pin

GPIO5

IO

11

General Purpose Input/Output Pin

GPIO6/EEDO

IO

12

General Purpose Input/Output Pin or EEPROM Interface EEDO Signal

GPIO7/EEDI

IO

13

General Purpose Input/Output Pin or EEPROM Interface EEDI Signal

GPIO8/TRSWN[0]/LED2

IO

4

General Purpose Input/Output Pin or RF TX/RX path select or LED2.

GPIO9

IO

3

General Purpose Input/Output Pin

GPIO10

IO

2

General Purpose Input/Output Pin