Rainbow Electronics AT76C551 - Manual (Page 15)

15
AT76C551
1612D–08/01
Baseband Interface Pins
TC_CLK O Clock output for transceiver control bus
TC_DATA O Data output for transceiver control bus
TC_ENBL O Enable output for transceiver control bus
TC_LD I Lock detect input
TC_PUREG O Transceiver voltage regulator power up
TC_PUPLL O Power up output for transceiver PLL
TC_PUVCO O VCO power up output
TC_PURXTX O Power up output for Transmit/Receive sections of transceiver
TC_RXON O RX section power up control output
TC_TXON O TX section power up control output
TC_I_CP_SW O Transceiver Current Pump external switch signal
RSSI I Receive signal strength indicator input from transceiver
TXPIN O Transmit data output to transceiver
RXPIN I Receive data input from transceiver
CLK_RXPIN I Clock driven to internal RxFront module
RXMODE I If “0”, internal clock recovery enabled and data extracted from external A/D. If “1” only BT
packet processing carried out. Clock generation and recovery must be carried out
externally.
RXF_PD O Power Down signal for external A/D
RXF_CLK O Clock driven to external A/D
RXF_OE_ O Output enable signal for external A/D
RXF_D[7:0] I A/D RXF_D[7:0] output bus
PCMCIA Interface Pins
PC_A[14:0] I Address Bus – Signals A0 through A14 are address-bus input lines. Signal A0 is always
used since the data interface is 8-bits wide.
PC_D[7:0] B Data Bus – Signals D7 through D0 are the bi-directional data bus for PCMCIA. The most
significant bit is D7.
NWE I Write Enable – Used to strobe memory write data into the chip from the PCMCIA data bus.
Should be deasserted during memory read cycles. It is used for both Common memory and
Attribute memory accesses.
NOE I Output Enable – Active low output enable signal. It is used to gate memory read data from
the BT device onto PCMCIA data bus. It is used for Common memory accesses and
Attribute memory Accesses.
NCE1 I Card Enable – Used to enable even-numbered word address bytes. A0 is used to select
between the even and odd number bytes within the addressed word
NIORD I I/O Read – Asserted by the host system to indicate to BT that a read from the I/O address
space is required. The chip will not respond until it has been configured for I/O operation by
the system.
Functional Description – Pin Name Order (Continued)
Name Type Description