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AD6636
Name
CLKC, CLKD
INA[0:15], INB[0:15]
Rev. 0 | Page 11 of 72
Type
Input
LVDS Input
Pin No.
A6, A5
See Table 8
Function
LVDS Differential Clock for LVDS_C Input Port (LVDS_CLKC+, LVDS_CLKC).
In LVDS input mode, INA[0 :15] and INB[0 :15] form a differential pair
LVDS_A+[0:15] (positive node) and LVDS_A–[0:15] (negative node), respectively.
In LVDS input mode, INC[0 :15] and IND[0 :15] form a differential pair
LVDS_C+[0:15] (positive node) and LVDS_C–[0:15] (negative node), respectively.
INC[0:15], IND[0:15]
LVDS Input
See Table 8
OUTPUT PORTS
PCLK
PA[0:15]
PACH[0:2]
PAIQ
PAGAIN
Bidirectional
Output
Output
Output
Output
E16
See Table 8
G15, D16, H12
H13
G13
Parallel Output Port Clock. Master mode output, Slave mode input.
Parallel Output Port A Data Bus.
Channel Indicator Output Port A.
Parallel Port A I/Q Data Indicator. Logic 1 indicates I data on data bus.
Parallel Port A Gain Word Output Indicator. Logic 1 indicates gain word on
data bus.
Parallel Port A Acknowledge (Active High).
Parallel Port A Request (Active High).
Parallel Output Port B Data Bus.
Channel Indicator Output Port B.
Parallel Port B I/Q Data Indicator. Logic 1 indicates I data on data bus.
Parallel Port B Gain Word Output Indicator. Logic 1 indicates gain word on
data bus.
Parallel Port B Acknowledge (Active High).
Parallel Port B Request (Active High).
Parallel Output Port C Data Bus.
Channel Indicator Output Port C.
Parallel Port C I/Q Data Indicator. Logic 1 indicates I data on data bus.
Parallel Port C Gain Word Output Indicator. Logic 1 indicates gain word on
data bus.
Parallel Port C Acknowledge (Active High).
Parallel Port C Request (Active High).
PAACK
PAREQ
PB[0:15]
PBCH[0:2]
PBIQ
PBGAIN
Input
Output
Output
Output
Output
Output
H14
F15
See Table 8
C13, D11, B14
D12
A14
PBACK
PBREQ
PC[0:15]
PCCH[0:2]
PCIQ
PCGAIN
Input
Output
Output
Output
Output
Output
E12
E11
See Table 8
M15, L14, N15
P15
P16
PCACK
PCREQ
MISC PINS
RESET
IRP
SYNC[0:3]
Input
Output
L13
R16
Input
Output
Input
P3
T2
B12, A12, C10,
B11
E4
R4
Master Reset (Active Low).
Interrupt Pin.
Synchronization Inputs. SYNC pins are independent of channels or input ports and
independent of each other.
LVDS Resistor Set Pin (Analog Pin). See Design Notes.
PLL Loop Filter (Analog Pin). See Design Notes.
LVDS_RSET
EXT_FILTER
MICROPORT CONTROL
D[0:15]
A[0:7]
DS(RD)
Input
Input
Bidirectional
Input
Input
See Table 8
See Table 8
P4
Bidirectional Microport Data. This bus is three-stated when CS is high.
Microport Address Bus.
Active Low Data Strobe when MODE = 1.
Active Low Read Strobe when MODE = 0.
Active Low Data Acknowledge when MODE = 1.
Microport Status Pin when MODE = 0.
Read/Write Strobe when MODE = 1.
Active Low Write Strobe when MODE = 0.
Mode Select Pin.
When SMODE = 0: Logic 0 = Intel mode; Logic 1 = Motorola mode.
When SMODE = 1: Logic 0 = SPI mode; Logic 1 = SPORT mode.
Active Low Chip Select. Logic 1 three-states the microport data bus.
Microport CLK Input (Input Only).
Chip ID Input Pins.
DTACK (RDY)
1
Output
M6
R/W (WR)
Input
N4
MODE
Input
T3
CS
CPUCLK
CHIPID[0:3]
Input
Input
Input
N5
R1
T4, R5, N6, P6