EP9315-CB Cirrus Logic Inc, EP9315-CB Datasheet - Page 535

• Manufacturer Part Number: EP9315-CB
• Description: IC ARM920T MCU 200MHZ 352-PBGA
• Manufacturer: Cirrus Logic Inc
• Series: EP9r

Specifications of EP9315-CB

• Core Processor: ARM9
• Core Size: 16/32-Bit
• Speed: 200MHz
• Connectivity: EBI/EMI, EIDE, Ethernet, I²C, IrDA, Keypad/Touchscreen, PCMCIA, SPI, UART/USART, USB
• Peripherals: AC'97, DMA, I&sup2:S, LCD, LED, MaverickKey, POR, PWM, WDT
• Number Of I /o: 16
• Program Memory Type: ROMless
• Ram Size: 32K x 8
• Voltage - Supply (vcc/vdd): 1.65 V ~ 3.6 V
• Data Converters: A/D 8x12b
• Oscillator Type: External
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 352-BGA
• Processor Series: EP93xx
• Core: ARM920T
• Data Bus Width: 32 bit
• 3rd Party Development Tools: MDK-ARM, RL-ARM, ULINK2
• Development Tools By Supplier: EDB9315A-Z
• For Use With: 598-1144 - KIT DEVELOPMENT EP9315 ARM9
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Program Memory Size: -
• Lead Free Status / Rohs Status: No
• Other names: 598-1261

DS785UM1
14.4.7 Aborts
incoming address consisting entirely of “1”s, that is, 0xFF or 0xFFFF, will always match, as it
is expected to be the broadcast address. For packets whose addresses do not match, the
HDLC receiver will generate no interrupts, modify no status bits, and place no data in the
receive FIFO.
If a packet is aborted or is too short, or if using Manchester encoding and the receiver DPLL
loses the carrier signal, the CPU will see at least some part of the packet in the receive FIFO.
In all cases, reading the last byte of the packet from the receive FIFO will set the EOF and
RAB bits in the UART1HDLCSts (and possibly generate an interrupt). In the case of an abort
indicated by an HDLC transmitter, that is, an escape-closing flag sequence in asynchronous
mode or an all “1”s byte in synchronous mode, all bytes received in the frame will appear in
the receive FIFO.
In asynchronous mode, if the abort is caused by a framing error (a missing stop bit), all bytes
up to and including the misframed byte will appear in the receive FIFO. Reading the last byte
will also set the UART1HDLCSts.FRE bit.
In synchronous mode, if the abort is caused by a misaligned flag or a series of seven
consecutive “1”s, all bytes except the one containing the bit after the sixth “1” will appear in
the receive FIFO. If the abort is caused by the receiver DPLL losing synchronization with a
Manchester encoded bit stream, the UART1HDLCSts.DPLLE bit is set.
Finally, if the packet is too short, that is, there are not enough received bytes to hold the
specified number of address and CRC bytes, the entire packet will appear in the receive
FIFO. In all cases, the packet is illegal and will be ignored by the CPU.
AME
00
01
10
11
One byte address
Two byte address
No matching
Function
Undefined
Match
Table 14-3. HDLC Receive Address Matching Modes
Copyright 2007 Cirrus Logic
NOT ((AMV[31:24] XOR ADDR) AND AMSK[31:24]) OR
NOT ((AMV[23:16] XOR ADDR) AND AMSK[23:16]) OR
NOT ((AMV[15:8] XOR ADDR) AND AMSK[15:8]) OR
NOT ((AMV[7:0] XOR ADDR) AND AMSK[7:0]) OR
ADDR = 0xFF
NOT ((AMV[31:16] XOR ADDR) AND AMSK[31:16]) OR
NOT ((AMV[15:0] XOR ADDR) AND AMSK[15:0]) OR
ADDR = 0xFFFF
Address Match Test
UART1 With HDLC and Modem Control Signals
EP93xx User’s Guide
14-13
14