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PDF CAM35C44 Data sheet ( Hoja de datos )
| Número de pieza | CAM35C44 | |
| Descripción | Infrared Communications Controller Chip CameraFR | |
| Fabricantes | SMSC Corporation | |
| Logotipo |  |
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CAM35C44
ADVANCE INFORMATION
Infrared Communications Controller Chip
CameraFR
FEATURES
!" Mixed Voltage Support
- Supports 3.3V Operation
- Supports Mixed Internal 3.3V
Operation with 3.3V/5V External
Configuration
!" Intelligent Auto Power Management
- Supports Multiple Power Down
Modes
!" Serial Port
- High Speed NS16C550A Compatible
UART with 16-Byte Send/Receive
FIFOs
- Programmable Baud Rate Generator
!" Infrared Port
- Multi-Protocol Infrared Interface
- 128-Byte Data FIFO
- IrDA 1.1 Compliant (up to 4Mbps)
- Consumer IR
- SHARP ASK IR
- Programmed I/O and DMA Options
!" Up to 5 General Purpose I/O Pins
!" Programmable Multi-Protocol Host Interface
- ISA-Style 5 Bit Address and 8 Bit
Data Bus
- IOCHRDY and No Wait State Support
for Fast IR
- Non-ISA 8 Bit Multiplexed
Address/Data Bus
- Programmable Read/Write Interface
- One 8 Bit DMA Channel
- One Programmable IRQ
- Chip Select
- Multihost Interface Support Includes
Hitachi and Mitsubishi
Microcontrollers
!" 24MHz Crystal Oscillator
- Supports Internal or External Clock
Source
!" 48 Pin TQFP Package
GENERAL DESCRIPTION
The CAM35C44 with IrDA v1.1 (4Mbps) and
Consumer IR support incorporates SMSC’s
advanced Infrared Communications Controller
(IrCC 2.0), a 16C550A-compatible UART,
Multiple Host Interface options, flexible Address
Decoding and up to five General Purpose I/Os.
The CAM35C44 also features sophisticated
power control circuitry to support multiple power
down modes, an on-chip 24MHz crystal
oscillator, and 12mA host bus drivers.
The CAM35C44 is particularly suited for 3.3v
battery-powered systems.
1 page  
PIN CONFIGURATION
The CAM35C44 pin numbers are shown in
FIGURE 2. Functional descriptions per pin-
group are shown in TABLE 1.
Note: The pin numbers in FIGURE 2 are subject
to change.
SA3 /BS 1
SA4 /BS 0
TX D/IRTX
IRTX
IRM OD E/IR RX 3
VIO
nIOR/RnW
nIOW/DSTRB
nNOWS
AE N
nCS
N/C
1
2
3
4
5
6
7
8
9
10
11
12
CAM35C44
48 PIN TQFP
36 HS1
35 HS0
34 X2
33 X1/CLK1
32 IRRX
31 RXD/IRRX
30 TC
29 IOCHRDY
28 RESET_DRV
27 VDD
26 nDACK
25 N/C
FIGURE 2 - CAM35C44 PIN CONFIGURATION
5
5 Page 
NAME
Receive Serial Data 2/
Infrared Rx3
Transmit Serial Data
2/Infrared Tx1,2
TOTAL
PINS
1
1
SYMBOL
BUFFER
TYPE
SERIAL PORT INTERFACE (2)
DESCRIPTION
RXD/IRRX
I This is the receiver input pin for
the UART COM port or an
alternate infrared port receiver
input.
TXD/IRTX
O12PD
This is the transmitter output pin
for the UART COM port or an
alternate infrared port transmitter
output.
Note1
Note2
Note3
Note4
TX and MODE pins drive to VIO level.
TX defaults to zero even during POR.
RX pins are voltage tolerant to VIO level.
All GPIOs are VIO tolerant and back drive protected.
Buffer-Type Summary
The characteristics of the buffer types shown in TABLE 1 are summarized in TABLE 2.
TABLE 2 - CAM35C44 BUFFER-TYPE SUMMARY
BUFFER TYPE
DESCRIPTION
IO12
Input/Output. 12mA sink; 6mA source
O12 Output. 12mA sink; 6mA source
OD12
Open Drain. 12mA sink
O12PD
Output. 12mA sink; 6mA source; 30#A Pulldown @ Tristate
ICLK
Input to Crystal Oscillator Circuit (TTL levels)
OCLK
Output to External Crystal
I Input TTL Compatible.
IP Input TTL Compatible with 30#A Pullup
IS Input with Schmitt Trigger.
11
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| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet CAM35C44.PDF ] | |
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