rpc2a-000-dil Radiometrix Ltd, rpc2a-000-dil Datasheet - Page 5

• Manufacturer Part Number: rpc2a-000-dil
• Description: Uhf Radio Packet Controller
• Manufacturer: Radiometrix Ltd

2.1 S
It is recommended that the RPC2A be assigned to a byte wide bi-directional I/O port on the host
processor. The port must be such that the 4 data lines can be direction controlled without affecting the 4
handshake line.
TXR
TXA
RXR
RXA
D0
D1
D2
D3
notes: 1. The 4 Handshake lines are active low
Radiometrix Ltd, RPC2A
name
pin
HE
IGNALS
2. The 4 Data lines true data
3. Logic levels are 5V CMOS, see electrical specifications
4. Input pins have a weak pull-up internally
R
The Reset signal, may either be driven by the host (recommended) or pulled up to Vcc via a
suitable resistor (10k ). A reset aborts any transfers in progress and restarts the Packet
Controller.
H
Minimum low time: 1.0 s, after reset is released (returned high). The host should allow a delay
1ms after reset for the RPC2A to initialise itself
During this delay the host must hold TXR high (unless D
RXR signal should be ignored.
number
OST
ESET
OST DRIVEN RESET
pin
6
7
8
9
2
3
4
5
figure 5: Host to RPC2A connection
NTERFACE
Processor
TX Request
TX Accept
RX Request
RX Accept
Data 0 (4)
Data 1 (5)
Data 2 (6)
Data 3 (7)
Host
function
pin
RESET
RESET
RESET
RESET
D0
D0
D0
D0
D1
D1
D1
D1
D2
D2
D2
D2
D3
D3
D3
D3
I/P
Bi-dir
I/P
O/P
O/P
Bi-dir
Bi-dir
Bi-dir
I/O
description
Data transfer request from HOST to
RPC2A
Data accept handshake back to HOST
Data transfer request from RPC2A to
HOST
Data accept handshake back to RPC2A
4 bit bi-directional data bus. Tri-state
between packet transfers, Driven on
receipt for Accept signal until packet
transfer is complete.
RPC2-433-64
RPC2-433-64
RPC2-433-64
RPC2-433-64
IAGNOSTIC
BiM2A-433-64
Transceiver
M
ODES
are required) and
page 5