18
Pin No.
Symbol
Type
Description
X’tal Interface
X’tal input. The working frequency is 33.8688 MHz.
X’tal output.
Power pin for internal digital circuitry.
Ground pin for internal digital circuitry.
Buffer RAM Data/Versatile Input/ Output. These pins are the bi-directional upper
Buffer RAM data bus to the external buffer memory. When an 8-bit DRAM is
used, the RD8-RD15 signals becomes Versatile I/O pins, VIO8-VIO15.
Bi-directional lower Buffer RAM data bus.
Power pin for internal digital circuitry.
Column Address Strobe Low/Column Address Strobe. When
TWE63h.RW6 is 0, this pin is the Column Address Strobe Low signal for
accessing the lower bytes of a two-CAS_ 16-bit DRAM. When
TWE63h.RW6 is 1 or when an 8-bit DRAM is used, this pin shall be
connected to CAS_ of the DRAM.
Column Address Strobe High/RAM Write Enable High. When a 16-bit
DRAM is used, this pin functions as Column address Strobe High for
accessing the upper bytes of a two-CAS_DRAM if TWE63h.RW6 is 0, or
as Write Enable High for writing the upper bytes of a two-WE_DRAM.
RAM Write Enable/RAM Write Enable Low. When TWE63h.RW6 is 0 or
when an 8-bit DRAM is used, this pin is the active-low write strobe to the
external buffer DRAM. When TWE63h.RW6 is 1, this pin is the Write
Enable Low signal for writing the lower bytes of a two-WE_16-bit DRAM.
Row Address Strobe.
This output is the Row Address Strobe signal to the buffer DRAM.
Power pin for internal digital circuitry.
Buffer RAM Address.
These pins are the address bus to the external buffer DRAM.
Ground pin for internal digital circuitry.
Digital Audio Output/Versatile I/O 0. The signal is either the Digital Audio
Output which supplies the IEC-958 digital audio data when
A0SEL00h.RW7=1 and ADOE2Eh.RW0=1, or the Versatile I/O 0 pin
otherwise.
Ground pin for internal DAC circuitry.
Right channel of audio.
Reference voltage for external audio filter circuit.
Left channel of audio.
Power pin for internal DAC circuitry.
Power pin for varipitch VCO circuitry.
Connect capacitor for compensator loop filter.
XTALI
XTALO
DVDD
DGND
RD[15:8]/
VIO[15:8]
RD[7:0]
DVDD3
CASL_/
CAS_
CASH_/
RWEH_
RWE_/
RWEL_
RAS_
DVDD
RA[8:0]
DGND
ADGO/
VIO0
DACVSS
RO
DACVREF
LO
DACVDD
VPVDD
VCOCIN
54
55
56
57
58, 60, 62,
65, 67, 69,
71, 73
59, 61, 63, 66,
68, 70, 72, 74
64
75
76
77
78
79
80-88
89
90
91
92
93
94
95
96
97
Input
Output
Power(5V)
Ground
TTL I/O, Slew rate
50K pull_up
TTL I/O, Slew rate
50K pull_up
Power(3.3V)
TTL Output
Slew rate
TTL Output
Slew rate
TTL Output
TTL Output
Slew rate
Power(5V)
TTL I/O, Slew rate
50K pull_down
Ground
TTL I/O, Slew rate
SMT, 50K pull_up
Ground
Analog Output
Analog Output
Analog Output
Analog Power(5V)
Analog Power(5V)
Analog Input
Audio Interface
Internal Audio Interface
DRAM Interface
Varipitch VCO Interface
